Circuit breakers

106 companies | 742 products
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residual current circuit breaker / low-voltage / MCB
residual current circuit breaker

RC units can be fitted to miniature circuit breakers (MCBs) as per DIN EN 61009-1 (VDE 0664-20). Used in combination with a MCB, they provide the same functionality as an RCBO. The benefits are a high ...

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SIEMENS Low-voltage – Power distribution
thermal-magnetic circuit breaker / overcurrent / automatic / DIN rail
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 ...

magnetic circuit breaker / short-circuit / multi-pole / overcurrent
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 / short-circuit / multi-pole / overcurrent
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 ...

air-operated circuit breaker / power
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 / voltage / for network protection
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 / single-pole / 2-pole / 3-pole
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
overcurrent circuit breaker / 2-pole / 3-pole / 4-pole
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.

short-circuit circuit breaker / overload / modular / molded case
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 / low-voltage
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 / high-voltage / 3-pole
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
thermal-magnetic circuit breaker / short-circuit / overload / modular
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
thermal-magnetic circuit breaker / short-circuit / rotary / molded case
thermal-magnetic circuit breaker
PKZM0 - PKZM4

Current: 0.16 A - 32 A

... 63 A is covered by two motor-protective circuit-breakers. With just 18 different types, this saves storage space and simplifies engineering. The proven PKZM0 switches motors from 0.16 to 32 A. The ...

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Eaton
motor protection circuit breaker / differential / short-circuit / modular
motor protection circuit breaker
PKZM 01

Current: 0 A - 25 A
VAC: 400 V

The PKZM 01 Motor protective circuit breaker is a highly flexible unit designed specifically for motors up to 25 A. It is perfect for small machines and other applications that primarily prefer the use ...

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Eaton
thermal circuit breaker / multi-pole / manual reset
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 / 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 ...

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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
earth-leakage circuit breaker / molded case / modular
earth-leakage circuit breaker

Current: 1 A - 63 A

An exciting new circuit breakers were released and these circuit breakers are in Compliance with standards IEC EN 60898 or IEC 60947-2 (depending on the version) and ...

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Schneider Electric - Electrical Distribution
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
high-voltage circuit breaker
high-voltage circuit breaker
max. 63 kA, 420 - 550 kV | DCB

The Disconnecting Circuit Breaker (DCB) with Fiber Optic Current Sensor (FOCS) from ABB is suitable for use with IEC 61850-9-2LE process bus communication. The Fiber Optic Current Sensor changes the ...

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ABB AG
short-circuit circuit breaker / modular / motor protection
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 ...

short-circuit circuit breaker / overload / modular / DIN rail
short-circuit circuit breaker
CTI 25M

Current: 27 A - 32 A

... kW Max. trip current [A] 406 A Packing format Multi pack Product description Circuit Breaker Product group Contactors and motor starters Product name Circuit breaker Quantity ...

short-circuit circuit breaker / overload / modular / DIN rail
short-circuit circuit breaker
CTI 45MB

Current: 23 A - 32 A

... kW Max. trip current [A] 416 A Packing format Multi pack Product description Circuit Breaker Product group Contactors and motor starters Product name Circuit breaker Quantity ...

short-circuit circuit breaker / overload / 2-pole / 4-pole
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 / overload / 2-pole / 4-pole
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 / 2-pole / 4-pole / three-phase
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 / 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 ...

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 ...

three-phase circuit breaker / high-performance
three-phase circuit breaker
15TC Series

Current: 20 A - 50 A

... 15TC series circuit breaker was designed to meet the package size and performance requirements of inactive military standard MS90351 in the 20 to 50 amp range. This lightweight, high performance, non-ambient ...

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Sensata Technologies
thermal circuit breaker / DC / for automotive applications
thermal circuit breaker
9115 series

Current: 15 A - 30 A
VDC: 30 V

The 9115 series of circuit breakers was designed for waterproof electrical systems of ordnance vehicles. The 9115 series is recommended for other mobile military and ground equipment, including trucks, ...

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Sensata Technologies
magnetic circuit breaker / single-pole / power / multi-pole
magnetic circuit breaker
209 Series

Current: 0.1 A - 100 A
VDC: 125, 160 V
VAC: 240, 277, 480 V

The 209, E-Frame circuit breaker combines power switching with accurate, reliable circuit protection in a compact single or multi-pole unit. The unit is ideal for branch circuit ...

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Sensata Technologies
low-voltage circuit breaker / single-pole / short-circuit / overload
low-voltage circuit breaker

Suitable for protection against Overload & Short Circuit(BKN, BKH, BKP, BF Series) Ground fault & over circuit(RKP, RKS) Ground fault(RKN) Surge Protect Device(BKS) 1, 2, 3, 4 Poles & Isolator 35mm DIN-rail ...

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LS Industrial Systems
magnetic circuit breaker / thermal / short-circuit / modular
magnetic circuit breaker
SM1 series

Current: 9 A - 32 A

... 32A. A magnetic trip indicator integrated on the SM1 breakers avoids dangerous closing operations during short-circuit conditions, previously disconnected by the breaker. The SM1 types ...

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LOVATO ELECTRIC
hydraulic-magnetic circuit breaker / bipolar / single-pole / manual reset
hydraulic-magnetic circuit breaker
M series

Current: 0.02 A - 30 A
VDC: 32 V - 65 V
VAC: 125 V - 250 V

The M-Series miniature hydraulic/magnetic circuit breakers are designed for those demanding applications where space, aesthetics and snap-in front panel mounting are important. These circuit ...

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Carling Technologies
thermal circuit breaker / single-pole / manual reset
thermal circuit breaker
104 series

Current: 0.05 A - 10 A
VDC: 48 V
VAC: 240 V

Miniaturised single pole thermal circuit breaker with push-to-reset tease free, trip-free, snap action mechanism (R-type TO CBE to EN 60934) integral type. Approved to CBE standard EN 60934 (IEC 60934). ...

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E-T-A
thermal circuit breaker / with overcurrent protection / single-pole / short-circuit
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 / manual reset / with Type 2 surge arrester
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

circuit breaker for DC applications / for photovoltaic applications
circuit breaker for DC applications
BFS-11

VDC: 120 V

Solar Panel level rapid shutdown BFS series is developed for solar roof and building safety. UL listed and compliant with NEC2017 A cost-efficiency and purely rapid shutdown solution to meet NEC2017 690.12 In cases of fire in buildings ...

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Zhejiang Benyi Electrical Co.,ltd.
thermal-magnetic circuit breaker / high-power / with overcurrent protection / direct current
thermal-magnetic circuit breaker
BDM-250

Current: 80 A - 250 A
VDC: 500 V

... Molded Case Circuit Breaker for Solar PV Battery Energy Storage System (BESS) and UPS applications. The BESS systems including batteries requires reliable and safety protection and isolating devices. The ...

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Zhejiang Benyi Electrical Co.,ltd.
thermal-magnetic circuit breaker / with overcurrent protection / direct current / 2-pole
thermal-magnetic circuit breaker
BDM-125

Current: 80 A - 125 A
VDC: 500 V

... Molded Case Circuit Breaker for Solar PV Battery Energy Storage System (BESS) and UPS applications. The BESS systems including batteries requires reliable and safety protection and isolating devices. The ...

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Zhejiang Benyi Electrical Co.,ltd.
hydraulic-magnetic circuit breaker / single-pole / manual reset / rocker switch type
hydraulic-magnetic circuit breaker
B3R1-63.0/250-1300B-A2-F2-K-E

Current: 1 A - 100 A
VAC: max 250.0 V

Circuit Breaker-B3R1 1P 250V 63A B3 series product is a hydraulic electromagnetic circuit breaker which our company design and develop by adopting international advanced ...

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ZHEJIANG BSB ELECTRICAL APPLIANCES CO.,LTD
hydraulic-magnetic circuit breaker / multi-pole / frequency / manual reset
hydraulic-magnetic circuit breaker
BSB, B1 1P

Current: 1 A - 40 A
VDC: max 80.0 V

Hydraulic Magnetic Circuit Breaker B1 series product is a hydraulic electromagnetic circuit breaker which our company design and develop by adopting international ...

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ZHEJIANG BSB ELECTRICAL APPLIANCES CO.,LTD
hydraulic-magnetic circuit breaker / multi-pole / manual reset / MCB
hydraulic-magnetic circuit breaker
B1 series

Current: 1 A - 30 A
VAC: max 250.0 V

Hydraulic Magnetic Circuit Breaker-B1 B1 series product is a hydraulic electromagnetic circuit breaker which our company design and develop by adopting international ...

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ZHEJIANG BSB ELECTRICAL APPLIANCES CO.,LTD

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.