Circuit breakers

114 companies | 657 products
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thermal circuit breaker
thermal circuit breaker
TA36

Primary current: 0.05 A - 20 A
VDC: 60, 32 V
VAC: 277, 240 V

Circuit Breaker for Equipment thermal, Rocker actuation, 2 pole Description • Thermal circuit breaker • 1-/2 pole • Snap-in version • Positively trip-free release • ...

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SCHURTER
thermal circuit breaker
thermal circuit breaker
T12-MSM

Primary 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

Primary 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
motor protection circuit breaker
motor protection circuit breaker
8146/5-V27 series

Primary current: 0.1 A - 22.5 A
VAC: 230, 500, 400 V

R. STAHL's 8146/5-V27 series moulded case circuit breakers for motor protection protect Ex e and Ex d motors and their associated electric lines and systems. The standard variants feature an adjustable, ...

miniature circuit breaker
miniature circuit breaker
8562 series

Primary current: 0.5 A - 40 A
VDC: 48, 110, 440 V
VAC: 230 V - 400 V

R. STAHL Series 8562 miniature circuit breakers boast good current limiting for short circuits and a high switching capacity of 6 or 10 kA. This results in a low load on cables and a ...

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)

Primary 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 ...

voltage circuit breaker
voltage circuit breaker
SB6100 series

Primary current: 10 mA - 100 mA
VAC: 600 V

Special-Purpose Ground-Fault Circuit Interrupter (GFCI), Class C and Class D Industrial Shock Block (ISB) is a personnel protection device designed to meet the requirements for special-purpose GFCIs defined by UL 943C. ...

motor protection circuit breaker
motor protection circuit breaker
PKE series

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

Primary 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

Primary 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
overload circuit breaker
overload circuit breaker
CTI 15 series

Primary 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 ...

short-circuit circuit breaker
short-circuit circuit breaker
CTI 15

Primary 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
short-circuit circuit breaker
short-circuit circuit breaker
HVR-63 series

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

Primary 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
thermal-magnetic circuit breaker
thermal-magnetic circuit breaker
1492-D series

Primary current: 0.5 A - 63 A
VDC: 440, 220 V
VAC: 250, 440 V

Bulletin 1492-D DC High Voltage Miniature Circuit Breakers provide overcurrent and short circuit protection for higher voltage DC circuits. These products feature dual ...

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Allen-Bradley
thermal-magnetic circuit breaker
thermal-magnetic circuit breaker
1492-G series

Primary current: 0.2 A - 25 A
VDC: 48, 96 V
VAC: 440, 250 V

Bulletin 1492-GH and 1492-GS High-density Miniature Circuit Breakers are thermal-magnetic type supplementary overcurrent protective devices. Our single-pole, high-density miniature circuit ...

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Allen-Bradley
air-operated circuit breaker
air-operated circuit breaker
3WL

Primary current: 630 A - 6,300 A

... 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
magnetic circuit breaker
magnetic circuit breaker
MS132-32

Primary current: 32 A
VDC: 400 V

... protect them reliably and without the need for a fuse from short-circuits, overload and phase failures. The manual motor starter offers a rated service short-circuit breaking capacity Ics ...

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

Primary 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
magnetic circuit breaker
magnetic circuit breaker
C60PV-DC

Primary current: 25 A

Main - Range of product - C60 Product or component type - Miniature circuit-breaker Device short name - C60PV-DC Pôles description - 2P Number of protected pôles - 2 Network type - DC Curve code - B Utilisation ...

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Schneider Electric - Electrical Distribution
short-circuit circuit breaker
short-circuit circuit breaker
NS

Primary current: 1,000 A

... Suitability for isolation - Yes conforming to EN/IEC 60947-2 Utilisation category - Category B [leu] rated ultimate short-circuit breaking capacity Performance level - 30 kA leu at 660/690 V AC 50/60 Hz conforming to ...

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Schneider Electric - Electrical Distribution
thermal-magnetic circuit breaker
thermal-magnetic circuit breaker
1489 series

Primary 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
air-operated circuit breaker
air-operated circuit breaker
AE-SW

Primary 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
air-operated circuit breaker
air-operated circuit breaker

Primary 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
thermal-magnetic circuit breaker
thermal-magnetic circuit breaker
MCB series

Primary current: 6 A - 63 A
VAC: 400, 230 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
thermal-magnetic circuit breaker
thermal-magnetic circuit breaker
RECmaxMP series

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

... 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
differential circuit breaker
differential circuit breaker
RECmaxLPD series

Primary 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
rocker switch type circuit breaker
rocker switch type circuit breaker
AD series

Primary current: 1 A - 50 A

Circuit breakers are the ‘safety stop’ signs of your onboard electrical system, they secure the electrical circuit against overload or short circuits. For equipment that ...

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: ...

vacuum circuit breaker
vacuum circuit breaker
CVB 25/08 series

Primary 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

Primary 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
A

Primary 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
hydraulic-magnetic circuit breaker
hydraulic-magnetic circuit breaker
B3 series

Primary current: 1 A - 250 A
VDC: 65 V - 250 V
VAC: 127 V - 240 V

Maximum voltage: 415VAC 50/60 Hz. Current Ratings: 1A to 250A. Operating Temperature: -40℃to +85℃ Number of poles: 1 pole, 2 poles, 3 poles Agency Certifications:  UL489A, CCC, TUV

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ZHEJIANG BSB ELECTRICAL APPLIANCES CO.,LTD
hydraulic-magnetic circuit breaker
hydraulic-magnetic circuit breaker
BG5 series

Primary current: 1 A - 63 A
VDC: max 80.0 V

BG5 Series circuit breaker for equipment are suitable for overload and short circuit protection of lines in electrical systems with rated currents 1A to 63A and rated voltages DC 80V ...

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ZHEJIANG BSB ELECTRICAL APPLIANCES CO.,LTD
thermal circuit breaker
thermal circuit breaker
BC5-25 8A

Primary current: 3 A - 50 A
VDC: 32 V - 65 V
VAC: 125 V - 250 V

... electric system which rated current from 3A to 50A, 50/60Hz, voltage AC 250V and DC65V to protect the overload and short of circuit. It is largely used in industrial automation equipment, telecommunication equipment, ...

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ZHEJIANG BSB ELECTRICAL APPLIANCES CO.,LTD
MCB circuit breaker
MCB circuit breaker
GSB2 Series

Primary current: 1 A - 63 A
VDC: 220 V
VAC: 220 V

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Tianshui 213 Electrical Apparatus Group CO.,LTD.
motor protection circuit breaker
motor protection circuit breaker
GSM8 series

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Tianshui 213 Electrical Apparatus Group CO.,LTD.
under-voltage circuit breaker
under-voltage circuit breaker
GSB2 MCB

Primary current: 1 A - 125 A

GSB2 series Miniature Circuit Breaker is mainly used in AC 50Hz or 60Hz circuit with rated operational voltage up to AC 415V, with operational current up to 63A. It can be attached ...

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Tianshui 213 Electrical Apparatus Group CO.,LTD.
4-pole circuit breaker
4-pole circuit breaker
PR series

Primary current: 80 A - 125 A

Circuit breakers PR121 - PR122 - PR123 - PR124 series 1- to 4-pole circuit breakers

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.