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overcurrent circuit breaker / 2-pole / 3-pole / 4-pole
overcurrent circuit breaker

Current: 30 A - 5000 A
VAC: 120 V - 600 V

... separate upstream fault protection and respective interconnections, which in turn reduces installation space, time, and cost. Breaker-based Service Entrance Rated transfer switches are available from 30A to 5000A.

thermal circuit breaker / under-voltage / overcurrent / adjustable
thermal circuit breaker
8146/5-V27 series

Current: 0.1 A - 22.5 A
VAC: 230, 500, 400 V

For protection of Ex e and Ex d motors Protects electric lines and plant equipment Thermal overcurrent release, adjustable, phase failure sensitive Electromagnetic quick release Robust enclosure made of glass fibre ...

thermal circuit breaker / under-voltage / modular / molded case
thermal circuit breaker
8527/2 series

Current: 0.1 A - 22.5 A
VAC: 400, 230, 500 V

Circuit-Breakers for Motor Protection Series 8523/8 Explosion protection to CENELEC IEC Can be used in Zone 1 and Zone 2 Optional equipment auxiliary circuit switch 1 NC + 1 NO or 2 NC + 2 ...

thermal circuit breaker / multi-pole / manual reset
thermal circuit breaker
T12-MSM

Current: 0.05 A - 16 A
VDC: 28 V
VAC: 240 V

... - Power supplies - Uninterruptible power supply - Power tools - Household appliances References Component 1: circuit breakers z T12-221 z T12-222 Component 2: metal switch z MSM LA 19 ; z MSM ...

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SCHURTER
thermal circuit breaker / single-pole / modular / rocker switch type
thermal circuit breaker
TA35

Current: 0.05 A - 20 A
VDC: 32 V
VAC: 240 V

The TA35 Rocker 1Pole by Schurter is a single-poled highly configurable thermal circuit breaker that has a snap-in version with an extensive current range, distinct colors for rocker, and a positively trip-free release. ...

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SCHURTER
thermal circuit breaker / bipolar / modular / rocker switch type
thermal circuit breaker
TA35

Current: 0.05 A - 20 A
VDC: 60 V
VAC: 240 V

... aspect that makes the difference between this item and other similar products available on the market are the thermal circuit breaker, along with the 2-pole system and the high configurability. In ...

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SCHURTER
thermal circuit breaker / tripolar / modular / rocker switch type
thermal circuit breaker
TA35

Current: 0.05 A - 12 A
VAC: 240 V

3 Pole TA35 Rocker CBE Circuit Breaker for thermal equipment and rocker actuation.

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SCHURTER
thermal circuit breaker / single-pole / manual reset
thermal circuit breaker
T9 series

Current: 3 A - 16 A
VDC: 32 V - 48 V
VAC: 240 V

... medical applications, power supplies, HVA, UPS, industrial, medical diagnostic and household appliances. This thermal circuit breaker has a supplementary protector for general industrial use. This is a single pole plus ...

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SCHURTER
air-operated circuit breaker / voltage
air-operated circuit breaker
Emax E1.2 series

Current: 0 A - 1600 A

The SACE Emax 2 is ABB'S innovative air circuit breakers that only utilizes up to 6300 A. of voltage, making it a cost efficient equipment. It has high end electrical circuitry that allows for a more ...

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ABB Protection and Connection
air-operated circuit breaker / voltage
air-operated circuit breaker
Emax E2.2 series

Current: 0 A - 2500 A

The SACE Emax 2 is ABB'S innovative air circuit breakers that only utilizes up to 6300 A. of voltage, making it a cost efficient equipment. It has high end electrical circuitry that allows for a more ...

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ABB Protection and Connection
air-operated circuit breaker / voltage
air-operated circuit breaker
Emax E4.2 series

Current: 0 A - 4000 A

With a 6,300-A voltage capability, ABB's SACE Emax 2 is a suitable and cost-efficient apparatus for electrical installations. The SACE Emax 2 exhibits an IP54 ingress protection level, a set of security locks, and dual insulation features. ...

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ABB Protection and Connection
air-operated circuit breaker / voltage
air-operated circuit breaker
Emax E6.2 series

Current: 0 A - 6300 A

The SACE Emax 2 is ABB'S innovative air circuit breakers that only utilizes up to 6300 A. of voltage, making it a cost efficient equipment. It has high end electrical circuitry that allows for a more ...

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ABB Protection and Connection
AC circuit breaker / molded case
AC circuit breaker
Tmax XT series XT1...XT4

Current: 250 A

The new SACE Tmax XT shaped-case circuit-breakers up to 250A proceed the custom of the well-known and merged Tmax T arrangement. They emphasize an ultra-superior level and an inexorably more modest size, while being not ...

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ABB Protection and Connection
magnetic circuit breaker / short-circuit / modular / motor protection
magnetic circuit breaker
MS132 series

Current: 32 A
VDC: 400 V

... protection up 15 kW (400 V) / 32 A. This type has a magnetic trip indication which enables a fast/ precise detection of short-circuits. With this magnetic trip indication you reduce your trouble-shooting. Less downtime, ...

magnetic circuit breaker / short-circuit / modular
magnetic circuit breaker
MS132-T series

Current: 0.1 A - 25 A
VDC: 400 V

MS132-T is a circuit breaker for transformer protection up to 12.5 kW (400 V) / 25 A. 14 variants are available with current ranges from 0.1 A up to 25 A. MS132-T allows an economic protection of single-phase control ...

air-operated circuit breaker / power / remote-controlled / with power controller function
air-operated circuit breaker

Current: 0 A - 6300 A

... competence. Power Controller The exclusive Power Controller function available on the new SACE Emax 2 circuit-breakers monitors the power managed by the circuit-breaker, keeping it below the limit set ...

thermal circuit breaker / low-voltage / power / modular
thermal circuit breaker
BZM series

Current: 16 A - 400 A
VAC: 400 V - 440 V

The BZM circuit breakers series is especially designed for low voltage applications in power distribution systems, which have basic technical and economic feature requirements. The advantage of ...

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Eaton
power circuit breaker / modular / molded case
power circuit breaker
NZM

Current: 25 A - 1600 A
VAC: 690 V

The NZM Moulded Case Circuit Breakers range up to 1600 A and incorporate four switches with performance overlaps. These are available from 25 kA for small distribution boards up to 150 kA for complex ...

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Eaton
modular circuit breaker / molded case / motor protection
modular circuit breaker
PKE

Current: 32 A - 65 A
VAC: 400 V

PKE motor-protective circuit-breakers with electronic wide-range overload protection offer an interesting alternative to the bimetal solution for motor currents up to 65 A. PKE motor-protective circuit-breakers ...

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Eaton
AC circuit breaker / modular / molded case / motor protection
AC circuit breaker
PKZM0/PKZM4

Current: 0.1 A - 63 A
VAC: 400 V

Motor Protective Circuit Breakers PKZM0 - PKZM4 - ready for "IE3" The entire range from 0.1 A to 63 A is covered by just two motor-protective circuit-breakers. With just 18 different ...

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Eaton
AC circuit breaker / modular / molded case / motor protection
AC circuit breaker
PKZM01

Current: 0 A - 25 A
VAC: 400 V

... Protective Circuit Breakers PKZM 01 - ready for "IE3" The PKZM01 for motors up to 25 A is ideal for small machines and other applications that primarily prefer the use of push or impact operation. Eaton ...

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Eaton
digital circuit breaker / short-circuit / modular / miniature
digital circuit breaker
EPSITRON® 787-2861 series

Current: 1 A - 8 A
VDC: 24 V

The new EPSITRON® Series single-channel electronic circuit breakers reliably protect your consumers against over-current and short-circuiting. The secondary-side fusing will trigger even ...

digital circuit breaker / short-circuit / overcurrent / modular
digital circuit breaker
787-86x series

Current: 0.5 A - 12 A
VDC: 24 V

... through regular circuit breakers can often be unproductive. This is basically the scenario whenever high-speed magnet tripping will not be carried out through TopBoost, that is used by PRO Power Supplies. Electric ...

short-circuit circuit breaker / high-performance / molded case / compact
short-circuit circuit breaker
ACW

Current: 20 A - 1600 A
VAC: 380, 415 V

... both thermal and short-circuit protection from 16 to 1600Amps. Its robust desing and double contacts structure optmize performance and increase breaking capacity (kA rms). The ACW series is available in two levels of ...

short-circuit circuit breaker / modular / molded case
short-circuit circuit breaker
DWA & DWB

Current: 16 A - 1600 A
VAC: 415, 380 V

The new line of WEG's modern circuit breakers features five new models. They operate from currents running from 10 to 1600A which handles most if not all of today's circuits. They have ...

air-operated circuit breaker / 4-pole / 3-pole / overload
air-operated circuit breaker
ABW

Current: 6300 A
VAC: 415 V

WEG Air Circuit Breaker ABW protects electrical circuits and related equipment so that they do not overload. It is very important to select the correct sized circuit breakers ...

4-pole circuit breaker / 3-pole / 2-pole / overload
4-pole circuit breaker
MDW & MDWH

Current: 2 A - 125 A

Miniature circuit breakers of the MDW range perform overload and standard short circuit protection of 2 to 100A electrical circuits. WEG also offers the MDWH breaker ...

thermal circuit breaker / short-circuit / modular / motor protection
thermal circuit breaker
MPW

... motor-protective circuit-breakers are utilized to protect electric circuits, as well as to operate and protect motors up to 60cv (380V) or 75cv (440V). They have a high breaking capacity enabling them ...

ground fault circuit breaker / voltage / for network protection
ground fault circuit breaker
SB6100 series

The SB1600 Series features the Industrial Shock-Block, a special purpose ground-fault circuit interrupter designed to provide safety for workers in industrial workstations. This series is ideal for grounded-neutral systems ...

vacuum circuit breaker / high-voltage / AC / for railway applications
vacuum circuit breaker
CVB 25/08 series

Current: 800 A
VAC: 25 kV

Switchgear for traction – AC vacuum circuit breaker The CVB Series vacuum circuit breaker is the main electrical switch and protection device of AC locomotives and electric multiple units. Mode ...

vacuum circuit breaker / medium-voltage / AC / for railway applications
vacuum circuit breaker
CVB 15/08 series

Current: 800 A
VAC: 15 kV

... applied, chances are the vacuum circuit breaker turns off and the springs maintains its charged and ready-to-be used switching operation or technique. There is no need for a secondary energy supply for the vacuum circuit breaker ...

short-circuit circuit breaker / adjustable / manual reset / DIN rail
short-circuit circuit breaker
M series

Current: 0.1 A - 32 A
VAC: 690 V

Manual motor starter – M has short-circuit and overload protection. Its Overload range is adjustable from almost 0, 1 - 32A. It has wide variety of accessories and is appropriate for small sized motors in machine-tool, ...

short-circuit circuit breaker / overload / 2-pole / 4-pole
short-circuit circuit breaker
MCB series

Current: 6 A - 63 A
VAC: 400, 230 V

... of a circuit breaker of the same element. MCBs generally have two options: Closed circuit-breaker: Grants functions of a remote control. With the presence of adequate signal, it can be disconnected ...

short-circuit circuit breaker / overload / 2-pole / 4-pole
short-circuit circuit breaker
RECmaxMP series

Current: 6 A - 63 A
VAC: 240, 415 V

... RECmaxMP are the motorized circuit breakers which can be connected remotely. They serve as a security against short circuit and overload. The switch can be linked via exterior order after ...

earth-leakage circuit breaker / 2-pole / 4-pole / three-phase
earth-leakage circuit breaker
RECmaxLPD series

Current: 6 A - 63 A
VAC: 415, 240 V

... The device connected with the WGC toroidal transformers make sure that the leakage and circuit breaker protection prevents earth leakage, overload or short circuit trip. It is best use in infrastructures ...

short-circuit circuit breaker / overload / high-current / 3-pole
short-circuit circuit breaker
MT-FDE series

Current: 80 A - 250 A
VAC: 240, 415 V

The MT-FDE Series is a motor-driven circuit breaker designed to provide resistance against short circuits and overloads. It is built with an automatic switch that runs through a remote control for 80 ...

short-circuit circuit breaker / overload / 2-pole / 4-pole
short-circuit circuit breaker
MT series

Current: 6 A - 63 A
VAC: 415, 240 V

The MT series motorized circuit breaker functions through securing a specified system from short circuit and overload damages. It can also be used as a circuit breaker device. Its setup ...

vacuum circuit breaker / medium-voltage / modular
vacuum circuit breaker
CiBOR

Current: 0 A - 2500 A
VAC: 0 kV - 17.5 kV

Vacumm circuit breakers are nowadays essential components within the Medium Voltage switchgear units: used for remodelling, renewal and new electrical installations.

vacuum circuit breaker / medium-voltage / modular
vacuum circuit breaker
NVL

Current: 1600 A - 2500 A
VAC: 12 kV - 24 kV

Vacuum circuit-breakers are nowadays indispensable Medium Voltage components for the use, restructuring, modernisation and new installation of switchgear.

vacuum circuit breaker / medium-voltage / modular
vacuum circuit breaker
Calix series

Current: 0 A - 4000 A
VAC: 0 kV - 12 kV

The 12KV VCB (CALIX) is designed for rapid auto reclosing duty with SCADA compatible control system. With an optional features like draw-out type PT, Powerpack, and an Integral earth switch, series trip arrangement for unmanned substation ...

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CG Power Systems
vacuum circuit breaker / AC / fixed / draw-out
vacuum circuit breaker
FELIX

Current: 0 A - 2000 A
VAC: 0 V - 36000 V

The "Felix" is a highly reliable product combined with positive safety interlocks. The product comes with compartmentalized construction and uses non hygroscopic epoxy mould for a long life. Felix delivers trouble free operation with ...

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CG Power Systems
vacuum circuit breaker / AC / indoor / for railway applications
vacuum circuit breaker

Current: 0 A - 1250 A
VAC: 0 kV - 12 kV

The legendary Indoor Vertical Isolation VCB is a preferred product in various utilities and Indian Railways. The vertical isolation and horizontal draw - out truck ensures more ground space and provides higher degree of compactness than ...

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CG Power Systems
vacuum circuit breaker / AC / in-line
vacuum circuit breaker

Current: 0 A - 2000 A
VAC: 0 V - 12000 V

CG offer economical solution for upgrading BOCB to VCB technology by interchanging the BOCB truck with a VCB truck in the existing panel. There is no need to modify the associated Relays, Current Transformer / Potential Transformer, busbar ...

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CG Power Systems
vacuum circuit breaker / voltage / in-line / outdoor
vacuum circuit breaker

Current: 0 A - 2000 A
VAC: 0 V - 36000 V

The CG Porcelain Clad VCB is a vacuum circuit breaker that is specifically manufactured for use in outdoor applications. This breaker can exhibit a rated voltage of 12kV up to 36kV with rated current ...

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CG Power Systems
magnetic circuit breaker / single-pole
magnetic circuit breaker

Orbit Breakers provide values between 20mA to 50, thermal types offer 1 to 2 pole sections and magnetic version have 1-4 pole tools. Additionally, all models in this series are engineered as per the UL 1077 standards ...

thermal circuit breaker / single-pole / manual reset
thermal circuit breaker

... thermal circuit breakers are delivered with rocker, push-pull, toggle and push-to-reset actuators. They are designed with a combination of on/off switching with circuit protection in ...

vacuum circuit breaker / medium-voltage
vacuum circuit breaker

VAC: 15 kV - 25 kV

The VESA Rolling Stock Vacuum Circuit Breaker is specially made for electric trains with a compact design. It is suitable for used in 25kV and 15kV AC applications. This circuit breaker does not need ...

thermal circuit breaker / voltage
thermal circuit breaker
W23 series

Current: 1 A - 40 A

The W23-X1A1G-1 is a thermal circuit breaker manufactured by TE Connectivity. Operating on a 250 VAC voltage, it has a current rating of 1 A and an interrupt capacity of 2,000 A. Created with an RoHS compliant structure, ...

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TE Circuit protection
thermal circuit breaker / single-pole / manual reset
thermal circuit breaker
W28 series

Current: 0.25 A - 20 A

The W28-XQ1A-0.25, manufactured by TE, is a thermal circuit breaker that has a current rating of 0.25 A. It has a push to reset actuator style with black button and bezel. It has a trip time of 4.5 - 28 s at 200%. Furthermore, ...

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TE Circuit protection
thermal circuit breaker / single-pole
thermal circuit breaker
W31 series

Current: 1 A - 40 A

The W31-X2M1G-1, manufactured by TE, is a thermal circuit breaker that has a current rating of 1 A. It has a toggle actuator style and an interrupt capacity of 2000A at 50VDC. It has a trip time of 11 - 30 seconds at ...

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TE Circuit protection
thermal circuit breaker / single-pole
thermal circuit breaker
W33 series

Current: 5 A - 20 A

... thermal circuit breaker that has a current rating of 15 A. It has a rocker actuator style and a black rocker color. Furthermore, this device comes with 2 poles. Pole1 has a switched only function while pole2 is a series ...

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TE Circuit protection
thermal circuit breaker / multi-pole
thermal circuit breaker
W51 series

Current: 5 A - 20 A

The W51-A121B1-10, manufactured by TE, is a thermal circuit breaker that has a current rating of 10 A. It has a rocker actuator style and an interrupt capacity of 1000A at 125VAC. It has a red translucent rocker color. ...

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TE Circuit protection
air-operated circuit breaker / power / overcurrent / grounding
air-operated circuit breaker
RDW5 series

Current: 200 A - 6300 A
VAC: 400, 380 V

DW5 Air Circuit breaker(ACB), is applied to power distribute network of AC 50Hz/60Hz, rated operate voltage is 400V,690V, rated current up to 6300A, is mainly applied to power distribute, transmission ...

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PEOPLE ELE. APPLIANCE GROUP CO., LTD.
thermal-magnetic circuit breaker / short-circuit / overload / low-voltage
thermal-magnetic circuit breaker
RDM5 series

Current: 10 A - 800 A
VAC: 380, 220, 400 V

RDM5 Moulded Case Circuit Breaker, is applied to power distribute network of AC 50Hz/60Hz, rated isolation voltage 1000V(RDM5-100 isolation voltage is 800V), rated operate voltage 400V or 690V, rated ...

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PEOPLE ELE. APPLIANCE GROUP CO., LTD.
thermal-magnetic circuit breaker / short-circuit / overload / manual
thermal-magnetic circuit breaker
RDM67 series MCCB

Current: 10 A - 1250 A
VAC: 400 V

... case circuit breaker(hereinafter referred to as circuit breaker), is applied to circuit of AC 50Hz(or 60Hz),rated insulation voltage 800V,(RDM67-63 is ...

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PEOPLE ELE. APPLIANCE GROUP CO., LTD.
thermal-magnetic circuit breaker / short-circuit / overload / DC
thermal-magnetic circuit breaker
RDX6-63DC series DC MCB

Current: 1 A - 63 A
VDC: 220, 400 V

RDX6-63/DC MCB is suitable for the DC distribution circuit of AC 50/60Hz,rated voltage up to 400V, rated current up to 63A, rated short-circuit breaking capacity does not exceed 6000A, as the use of circuit's ...

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PEOPLE ELE. APPLIANCE GROUP CO., LTD.
air-operated circuit breaker / short-circuit / power / overload
air-operated circuit breaker
RDW2-1600 series

Current: 200 A - 1600 A
VAC: 400, 690 V

RDW2-1600 Intelligent type Air circuit breaker, is mainly applied to power distribution network of rated operational voltage up to 690V, rated current from 200A to 1600A. It used to distribute power and ...

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PEOPLE ELE. APPLIANCE GROUP CO., LTD.
thermal-magnetic circuit breaker / short-circuit / single-pole / overload
thermal-magnetic circuit breaker
KB6 series SP

Current: 6 A - 63 A
VAC: 400, 230 V

Miniature Circuit Breaker Standards: IEC60898 Rated Current: 6 - 63A Number of Poles: 1, 2, 3 Rated Operational Voltage: 230/ 400V AC Tripping Characteristics: B, C Curve

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Entek Electric Co., Ltd.
thermal-magnetic circuit breaker / short-circuit / multi-pole / overload
thermal-magnetic circuit breaker
KB6 series DP

Current: 6 A - 63 A
VAC: 230, 400 V

Entek Electric's MCB models KB-6 and KB-10 - used to protect electrical circuits with a high level of reliability in industrial machines or residential buildings. Both models are widely in demand in many countries, this ...

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Entek Electric Co., Ltd.
thermal-magnetic circuit breaker / short-circuit / single-pole / overload
thermal-magnetic circuit breaker
KB1 series SP

Current: 6 A - 63 A
VAC: 230, 400 V

Entek Electric's MCB models KB-6 and KB-10 - used to protect electrical circuits with a high level of reliability in industrial machines or residential buildings. Both models are widely in demand in many countries, this ...

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Entek Electric Co., Ltd.
thermal-magnetic circuit breaker / single-pole / short-circuit / overload
thermal-magnetic circuit breaker
KB1 series DP

Current: 6 A - 63 A
VAC: 400, 230 V

Entek Electric's MCB models KB-6 and KB-10 - used to protect electrical circuits with a high level of reliability in industrial machines or residential buildings. Both models are widely in demand in many countries, this ...

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Entek Electric Co., Ltd.
thermal-magnetic circuit breaker / overcurrent / short-circuit / single-pole
thermal-magnetic circuit breaker
KB1 series TP

Current: 6 A - 63 A
VAC: 400, 230 V

Entek Electric's MCB models KB-6 and KB-10 - used to protect electrical circuits with a high level of reliability in industrial machines or residential buildings. Both models are widely in demand in many countries, this ...

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Entek Electric Co., Ltd.
three-phase circuit breaker / modular / with Type 2 surge arrester / molded case
three-phase circuit breaker
V-CHECK 4RPT

Current: 40000 A
VAC: 400 V

... and power frequency overvoltage protection devices (SPD+POP), intended for actuation on shunt release of a moulded case circuit breaker (MCCB not included), Type 2 / Class II, 40 kA (8/20 μs) surges, 4 pole (3P+N), for ...

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Cirprotec
modular circuit breaker / with Type 2 surge arrester / DIN rail / molded case
modular circuit breaker
V-CHECK MPT series

Current: 10 A - 40000 A
VAC: 230 V

... transientand power frequency overvoltage safety devices ( SPD + POP). The V - CHECK MPT is a condensed wired device with a MCB circuit breaker. The device is a Type 2 / Category II, having 15 KA (8/20 ...

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Cirprotec
circuit breaker with Type 2 surge arrester / mini / molded case / compact
circuit breaker with Type 2 surge arrester
V-CHECK MPT mini series

Current: 10 A - 15000 A
VAC: 230 V

... combined transient and power frequency overvoltage product series, and are very compact, are pre-wired, and feature a MCB circuit breaker, Type 2 / Class II, 15 kA (8/20 μs) surges, 2 pole (P+N) and 4 ...

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Cirprotec
three-phase circuit breaker / modular / with Type 2 surge arrester / molded case
three-phase circuit breaker
V-CHECK 4R

Current: 40000 A
VAC: 400 V

... industrial facilities and on-site panels. The unit is to be used for actuation on undervoltage release of a moulded case circuit breaker (MCCB not included), Type 2 / Class II, 40 kA (8/20 ?s) surges, 4 pole (3P+N), for ...

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Cirprotec
multi-pole circuit breaker / modular / with Type 2 surge arrester / molded case
multi-pole circuit breaker
V-CHECK MR series

Current: 6 A - 20000 A
VAC: 230 V

The V-CHECK MR is a Consolidated transient and power frequency overvoltage security devices (Spd+pop), complete with programmed reclosure (mechanized MCB included), Type 2/ Class II, 15 ka (8/20 μs) surges, 2 poles (P+n) and 4 pole (3p+n), ...

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Cirprotec
short-circuit circuit breaker / modular / molded case / motor protection
short-circuit circuit breaker

Current: 32 A

... industry, agricultural machines, repair shops, compressors, etc. With a different type of contact system solution, the short circuit breaking capacity is higher. The MS32 units have heights smaller than those of the ...

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Iskra
thermal circuit breaker / power / modular / motor protection
thermal circuit breaker

Current: 25 A

MS25 are switches specifically devised for the protection of motors. They are used in electric motors to protect/start-up motors of compressors, agricultural machines, repair shops, industry, external use motors. They conform to UL, GOST-R, ...

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Iskra
AC circuit breaker / modular / molded case / miniature
AC circuit breaker

Current: 1 A - 63 A
VAC: 230, 400 V

The Miniature Circuit Breakers RI 60 feature special rings that are accessible for fixing miniature cicruit breakers with two M5 screws. The handle can also be sealed in ON or Off position. ...

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Iskra
multi-pole circuit breaker / modular / molded case / miniature
multi-pole circuit breaker
RI 20

Current: 32 A

The Miniature Circuit Breakers RI 20 are created for overcurrent protection of installations and devices. It is also used as a disconnector during electric shock. The breaker has 1 ...

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Iskra
thermal circuit breaker / short-circuit / modular / miniature
thermal circuit breaker
RI 50

The RI 50 by Iskra Sistemi are miniature circuit breakers specifically designed for protection from overcurrent such as overload and short circuit of installations and devices and also ...

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Iskra

How to choose this product

circuit-breaker

A circuit breaker is an electrical protection device that cuts power to an electrical cable in case of overvoltage, short circuit or if the circuit presents an isolation defect.

Applications

Circuit breakers are used in industrial facilities to protect circuits and electrical machinery.

Technologies

Thermal circuit-breakers use a bimetallic strip that expands and opens the circuit in the presence of excessive currents. It protects conductors from prolonged over amperage and fire-risks. Magnetic circuit-breakers use a coil, as in relays. They can open the circuit immediately or after pre-set delays (e.g. for motor-starting). Thermal magnetic circuit-breakers combine these two systems. High-end electronic circuit-breakers can be adjusted for extremely precise activation.

Differential circuit-breakers protect against ground leakage. In case of isolation defects, the sum of the phase currents is not equal to the current circulating in the neutral. A magnetic circuit uses this difference to trigger the device. Circuit-breakers interrupt power to electrical supply lines. High-voltage circuit-breakers use gas, oil or compressed air to increase their ability to cut power and extinguish electrical arcs.

How to choose

The main parameters are the rated current (In), well under the trip level (Icu or Icn), beyond which the circuit's integrity is at risk, and the device's class.