Circuit breakers

101 companies | 619 products
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short-circuit circuit breaker
short-circuit circuit breaker
HVR-63 series

Current: 0 A - 8,000 A
VAC: 24 kV

The latest generation of generator circuit-breaker (GCB) With the new HVR-63 GCB, Hitachi ABB Power Grids continues to lead the way in designing the most advanced GCBs. The HVR-63 is the latest generation ...

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ABB AG
earth-leakage circuit breaker
earth-leakage circuit breaker
NG125

Current: 10 A - 125 A

Main - Product or component type - Add-on residual current devices Device short name Pôles description - Vigi NG125 4P [In] rated current - 63 A Network type - AC Earth-leakage sensitivity - 30 mA Earth-leakage protection time delay ...

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Schneider Electric - Electrical Distribution
overcurrent circuit breaker
overcurrent circuit breaker

Current: 30 A - 5,000 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
thermal circuit breaker
T12-MSM

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

Description Thermal circuit breaker Metal switch non-illuminated and illuminated 1 pole Quick connect terminals 6.3 x 0.8 mm or screw terminals Applications Power supplies Uninterruptible power ...

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SCHURTER
thermal circuit breaker
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 ...

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SCHURTER
thermal circuit breaker
thermal circuit breaker
TA35

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

Description TA35 Rocker 2Pole Description Thermal circuit breaker 2-pole Snap-in version Positively trip-free release Method of operation acc. to IEC: S-type Different rocker ...

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SCHURTER
air-operated circuit breaker
air-operated circuit breaker
AE-SW

Current: 1,000 A - 6,000 A
VAC: 0 V - 690 V

Make electrical equipment multi-functional by means of Mitsubishi air circuit breakers that are suitable for protection of the main circuit. Air circuit breakers ...

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MITSUBISHI Automation
ground fault circuit breaker
ground fault circuit breaker
SB6100 series

Current: 10 mA - 100 mA
VAC: 600 V

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 ...

thermal-magnetic circuit breaker
thermal-magnetic circuit breaker
1489-M series

Current: 0.5 A - 63 A
VDC: 48, 96 V
VAC: 480, 277, 240 V

Bulletin 1489-M Thermal-magnetic Circuit Breakers are UL 489 Listed for branch circuit protection in the United States and Canada, and they are certified as Miniature Circuit ...

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Allen-Bradley
short-circuit circuit breaker
short-circuit circuit breaker
CTI 15 series

Current: 0.25 A - 16 A

These circuit breakers are intended for short circuit and to provide safety on engine applications which can cover a current range from 0.1 up to 90 A with and AC-3 rating. It has a program ...

air-operated circuit breaker
air-operated circuit breaker

Current: 1,000 A - 6,000 A
VAC: 690 V

Make electrical equipment multi-functional by means of Mitsubishi air circuit breakers that are suitable for protection of the main circuit. Air circuit breakers ...

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MITSUBISHI ELECTRIC AUTOMATION
live-tank circuit breaker
live-tank circuit breaker
3AP1 series

Current: 2,500, 4,000 A
VAC: 72.5 kV - 800 kV

Overview of our live tank circuit breakers We offer our live tank circuit breakers for applications from 72.5 kV to 800 kV, up to 80 kA. Depending on the requirement, ...

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SIEMENS High-voltage – Power transmission
air-operated circuit breaker
air-operated circuit breaker
3WL

Current: 630 A - 6,300 A
VAC: 0 V - 1,000 V

... electricity. 3WL air circuit breakers reliably protect electrical installations against damage or fire as a result of short circuits, ground faults, or overload faults. Heart of the ...

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SIEMENS Low-voltage – Power distribution
thermal-magnetic circuit breaker
thermal-magnetic circuit breaker
PKE

Current: 32 A - 65 A
VAC: 400 V

Reliability and versatility that is what we look for most of the times. Well need not look further. The EATON Motor Protective Circuit Breaker PKE is truly a world class product. Widely sought after because ...

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Eaton
magnetic circuit breaker
magnetic circuit breaker
(MCCB) NF

... including "F-style" small size breakers, with improved usability. The molded case circuit breaker (MCCB) opens and closes a low voltage circuit, and breaks the fault ...

magnetic circuit breaker
magnetic circuit breaker
(ACB) AE-SW

Make electrical equipment multi-functional by means of Mitsubishi air circuit breakers that are suitable for protection of the main circuit. Air circuit breakers ...

thermal-magnetic circuit breaker
thermal-magnetic circuit breaker
BHW-T10 (DIN-Series)

Current: 0.5 A - 100 A
VAC: 240 V - 415 V

... replacement of miniature circuit breakers on the DIN rail. All terminals are Bi-Connect for ultimate flexibility. Deep serrated terminals provide the mounting of cables up to 35 mm² cross-section. The ...

air-operated circuit breaker
air-operated circuit breaker
1SDA073907R1

Current: 1,600 A
VAC: 690 V

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 Smart Power
spring operated circuit breaker
spring operated circuit breaker
MS3320 series

Current: 1 A - 30 A
VDC: 28 V
VAC: 115 V

Electrical protection for military and civilian platforms MIL Circuit Breakers operate flawlessly in harsh conditions, resistant to extreme vibration & excessive mechanical shock in various applications, ...

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Crouzet
thermal-magnetic circuit breaker
thermal-magnetic circuit breaker
1489 series

Current: 0.5 A - 63 A
VAC: 240, 480, 277 V

... Application Information Circuit Voltage The Bulletin 1489-M circuit breakers are rated by voltage class.Applications should not exceed the listed voltage and current range. Circuit ...

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Allen Bradley
short-circuit circuit breaker
short-circuit circuit breaker
CTI 15

Current: 20 A - 25 A

... kW Max. trip current [A] 275 A Packing format Multi pack Product description Circuit Breaker Product group Contactors and motor starters Product name Circuit breaker Quantity ...

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Danfoss Industrial Automation
vacuum circuit breaker
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 ...

vacuum circuit breaker
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 ...

hydraulic-magnetic circuit breaker
hydraulic-magnetic circuit breaker
D

Current: 0.02 A - 50 A
VDC: 65 V
VAC: 125 V - 277 V

Carling Technologies' D-Series hydraulic magnetic circuit breakers are similar to the C-Series circuit breakers, but designed for snap-on-back panel rail mounting on ...

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Carling Technologies
thermal circuit breaker
thermal circuit breaker
CTB

Current: 3 A - 15 A
VDC: 50 V
VAC: 125 V - 250 V

... pole, rocker actuated family of thermal circuit breakers designed to protect equipment. Utilizing simple, precision design with few moving parts, these breakers offer cost effective, ...

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Carling Technologies
hydraulic-magnetic circuit breaker
hydraulic-magnetic circuit breaker
A

Current: 0.02 A - 50 A
VDC: 80 V
VAC: 125 V - 277 V

Description: Well known for their proven reliability, Carling Technologies' A-Series hydraulic magnetic circuit breakers are compact, temperature stable and designed for precision operation in OEM markets ...

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Carling Technologies
short-circuit circuit breaker
short-circuit circuit breaker
MCB series

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

MCB-P or MCB-T are circuit-breakers that combine the functions of a circuit breaker (overload and short-circuit protection) and those of a contactor ...

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CIRCUTOR
short-circuit circuit breaker
short-circuit circuit breaker
RECmaxMP series

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

... RECmax MP series are motorized circuit breakers that can be linked remotely.They function as protection against shortcircuit and overload, and can also be used as a circuit breaker. ...

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CIRCUTOR
earth-leakage circuit breaker
earth-leakage circuit breaker
RECmaxLPD series

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

... device with circuit breaker and ultra-immunized earth leakage protection. Programmable unit with display, which measures leakage currents (earth leakage protection), and orders the disconnection or ...

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CIRCUTOR
vacuum circuit breaker
vacuum circuit breaker
Joslyn Hi-Voltage®

VAC: 15 kV - 230 kV

Joslyn Hi-Voltage® overhead products improve the efficiency and reliability of electrical power systems and include capacitor switches, reclosers, and switches that reduce the frequency and duration of outages. Features No Oil, No Gas: ...

hydraulic-magnetic circuit breaker
hydraulic-magnetic circuit breaker
BSB7 Series

Current: 1 A - 63 A
VDC: 80, 125, 175 V
VAC: 230, 400 V

BSB7 series hydraulic circuit breakers are suitable for distribution lines with rated AC working voltage up to 400V, single-pole DC voltage up to 125V, and bipolar voltage up to 250V, and rated current ...

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ZHEJIANG BSB ELECTRICAL APPLIANCES CO.,LTD
hydraulic-magnetic circuit breaker
hydraulic-magnetic circuit breaker
B3D 1P

Current: 1 A - 30 A
VAC: 240 V

... technology.The circuit breaker consists of shell,operating mechanism,contact arc extinguishing system and hydraulic solenoid tripping device and other parts.The circuit breaker ...

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ZHEJIANG BSB ELECTRICAL APPLIANCES CO.,LTD
rocker switch type circuit breaker
rocker switch type circuit breaker
B3D 1P

Current: 1 A - 30 A
VAC: 240 V

... technology.The circuit breaker consists of shell,operating mechanism,contact arc extinguishing system and hydraulic solenoid tripping device and other parts.The circuit breaker ...

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ZHEJIANG BSB ELECTRICAL APPLIANCES CO.,LTD
thermal circuit breaker
thermal circuit breaker
BRSCB-80

Current: 40,000 A
VAC: 230, 400 V

Features: Status indication. MCB specially designed for Surge Arrester. It can cut the leakage current to 3A. Therefore prevent possible fire hazzard caused by degenerated SPD. Special MCB designed to protect the SPD.

MCB circuit breaker
MCB circuit breaker
BRSCB-40

Current: 5,000 A
VAC: 230 V - 275 V

Product Features: ● High surge current resistance. ● Low cutting current, less than 3A

MCB circuit breaker
MCB circuit breaker

Current: 1 A - 63 A
VAC: 110 V - 480 V

Function Protection of circuits against short-circuit currents, Protection of circuits against overload currents, Switch, Isolation, Circuit-breakers are used ...

manual reset circuit breaker
manual reset circuit breaker
MCB

Current: 0 A - 63 A
VAC: 230, 400 V

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COMESTERO SISTEMI
single-pole circuit breaker
single-pole circuit breaker
ADR

Current: 0.1 A - 63 A
VAC: 400, 480 V

Single or multipole mid range compact circuit breaker, 35 mm DIN rail mounting, large number of built-in options

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COMESTERO SISTEMI
single-pole circuit breaker
single-pole circuit breaker
AR

Current: 0.1 A - 100 A
VDC: 80, 125, 250 V
VAC: 250 V - 480 V

Single or multipole circuit breaker, available with front or snap-in mounting, large number Options Integrated auxiliary switches, high-inrush (8x In, 15 x In, 22 x In), remote OFF, Mid-Trip, Alarm- ...

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COMESTERO SISTEMI

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.