Circuit breakers

103 companies | 563 products
Circuit breakers
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motor protection circuit breaker - max. 100 kA, 400 V | PKE

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...

motor protection circuit breaker - max. 50 kA, 400 V | PKZM0

The PKZM0 is a motor protective circuit breaker manufactured by Eaton. It can operate with the DIL contractor series, suitable for the configuration of motor-starter combinations.

The...

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air circuit breaker - max. 1 600 A | Emax E1.2 series

The SACE Emax 2 is ABB'S innovative air circuit breakers that only utilizes...

air circuit breaker - max. 2 500 A | Emax E2.2 series

The SACE Emax 2 is ABB'S innovative air circuit breakers that only utilizes...

air circuit breaker - max. 4 000 A | Emax E4.2 series

With a 6,300-A voltage capability, ABB's SACE Emax 2 is a suitable and cost-efficient apparatus...

air circuit breaker - max. 6 300 A | Emax E6.2 series

The SACE Emax 2 is ABB'S innovative air circuit breakers that only utilizes...

air circuit breaker - max. 6 300 A, IP54 | Emax series

The same height and depth is found in all of the SACE Emax circuit-breakers in both the withdrawable and fixed version. The breakers enable the construction...

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air circuit breaker - 630 - 6 300 A | SENTRON 3WL

Air Circuit Breakers 3WL offer a flexible design which has integrated communications technology. The flexible design along with powerful technology...

molded case circuit breaker - 16 - 1 600 A | SENTRON 3VL

Presenting a top of the line compact design, the SENTRON 3VL molded-case circuit breakers meet all requirements placed upon space-saving electrical distribution systems...

mini circuit breaker - max. 10 000 A | 5SL

The innovative 5SL miniature circuit breaker has the same features and more as other Siemens MCBs and can be used up to 6kA. It has a striking design with color-coded, easy to recognize switching...

mini circuit breaker - 60 - 440 V | 5SY, 5SP

The 5SY and 5SP Miniature Circuit Breakers (MCB) are perfect for protecting plants in buildings or even in industrial applications because it functions as main switches for disconnection or isolation of plants....

mini circuit breaker - 10 - 20 A | 5SJ6…-.KS

These Miniature Circuit Breakers 5SJ6 are created with an integrated plug-in...

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thermal circuit breaker / rocker switch type - 0.05 - 20 A, 32 - 240 VAC | TA35

The TA35 Rocker 1Pole by Schurter is a single-poled highly configurable thermal circuit...

thermal circuit breaker / bipolar / rocker switch type - 0.05 - 20 A, 60 - 240 VAC | TA35

The aspect that makes the difference between this item and other similar products available on the market are...

thermal circuit breaker / single-pole - 3 - 16 A, 48 VDC - 240 VAC | T9 series

This product is definitely designed for standard and medical applications, power supplies, HVA, UPS, industrial, medical diagnostic and household appliances....

thermal circuit breaker / single-pole - 0.05 - 16 A, 48 VDC - 240 VAC | T11 series

T11 circuit breakers are one of the ranges of components manufactured for single pole push reset function feature. These circuit breakers are in-line small...

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thermal circuit breaker / single-pole - 0.05 - 16 A, 48 VDC - 240 VAC | T11 series

With more than 50 years of solid experience and knowledge in providing aerospace applications solutions, Crouzet Aerospace produces aerospace components that guarantee maximum performance and excellent quality. With a whole line of products perfect for aerospace applications, Crouzet Aerospace is also...

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generator circuit breaker - max. 63 kA, 24 kV | HVR-63 series

The HVR-63 GCB is a generator circuit-breaker manufactured by ABB. It is ideal for retrofitting or replacing power plants with unit power of up to 180 MW. It features an...

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 conventional...

live-tank circuit breaker / high-voltage - max. 31.5 kA, 72.5 - 84 kV | LTA

The LTA 72D1 is a live tank circuit breaker manufactured by ABB. It utilizes carbon dioxide as the insulation and arc extinguishing medium. This replaces...

live-tank circuit breaker / high-voltage - max. 31.5 kA, 36 - 72.5 kV | EDF SK

The ABB EDF SK Auto Puffer spring drive operating mechanism circuit breakers are designed for use outdoors. This high-performance...

live-tank circuit breaker / high-voltage - max. 31.5 kA, 36 - 72.5 kV | EDT SK

The combined apparatus of EDT SK relies on credible SF6 live tank breaker technology of ED type. Additionally, there is also one centralized compartment per pole having an internal...

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molded case circuit breaker - 10 - 3 000 A | 140G series

Bulletin 140G Molded Case Circuit Breakers have eight different frame sizes with a...

circuit breaker - 0.5 - 63 A | 188-J series

The circuit breakers from Bulletin 188 are best to be used in extreme conditions...

DIN rail circuit breaker - 0.5 - 40 A, 240 V | 1489-A series

The Bulletin 1492-RCD Residual Current Devices are utilized to detect earth leakage. They can be used...

thermal magnetic circuit breaker - 0.5 - 63 A | 1489-M series

Bulletin 1489-M thermal-magnetic Circuit Breakers are approved for branch circuit protection in the United...

mini circuit breaker - 0.2 - 25 A | 1492-GH, 1492-GS

The High-Density Circuit Breakers from Rockwell Automation offer single-pole circuit breakers...

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modular circuit breaker - 1 - 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...

mini circuit breaker - 10 - 125 A

Schneider Electric C120 modular circuit-breakers can handle nominal current ranging from 10 to 125 A and offer a range of breaking capacity and...

high-performance circuit breaker / mini - 10 - 125 A | NG125

This high-end device has a nominal current of 10 to 125A. Its operating voltage is up to 500 Vac with an insulation voltage...

high-performance circuit breaker / modular - 16 - 160 A | NG160

This unit has a rated current of 16 to 160A, rated operational voltage of 500V AC, and three possible breaking performances at 16, 25 and 35kA, and under...

mini circuit breaker - 0.5 - 63 A | C60 UL/CSA/IEC

C60 UL/CSA/IEC is one of the top circuit breakers in North American standards. This highly capable device has a rating current of 0.5 to 63A....

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DIN rail circuit breaker - 0.5 - 40 A, 240 V | 1489

In purchasing equipments reliability is of utmost importance. Bulletin 1489 Industrial...

thermal circuit breaker / single-pole / mini - 0.2 - 25 A, 65 - 250 V | 1492-GH

You are looking at one of the most advanced miniature circuit breakers available on the market, for which...

thermal magnetic circuit breaker - 10 - 100 A | 1492-MC

Rockwell Automation Bulletin 1492-MC Thermal Magnetic Circuit Breakers are used for giving precise...

motor protection circuit breaker - 0.1 - 630 A | 140M

Presenting a top of the line new product. Bulletin 140M Motor Protection Circuit Breakers are...

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motor protection circuit breaker - 0.1 - 630 A | 140M

Siemens has designed these high-quality and high-performance circuit breakers as a result of research and innovation that fits the present environmental and technological scenario....

live-tank circuit breaker / high-voltage - 75.5 - 1 425 kV | 3AP1, 3AP2

This circuit breaker has many special features including live-tank circuit breaking...

dead-tank circuit breaker / high-voltage - 38 - 245 kV | 3AP1

The exceptional features of the design of this dead-tank involves having a perceived quality of being created with...

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low-voltage circuit breaker - AR-series

AR-series power circuit breaker replacements are designed to be...

vacuum circuit breaker / medium-voltage - VR series

The VR-Series vacuum breaker replacements are designed to be electrical...

hydraulic-magnetic circuit breaker - 1U series

Eaton 1U Series Slimline hydraulic magnetic breaker gives improved reliability, safety and performance by using a patented snap action...

hydraulic-magnetic circuit breaker - 1 000 V | AM1P series

With the help or parallel wiring configuration, the AM1P facilitates 200 amperes in a 2-pole design...

hydraulic-magnetic circuit breaker - C series

Popular in outdoor locations, the C Series is ideal for use in either low or high temperature environments where...

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live-tank circuit breaker / high-voltage - max. 800 kV | GL series

Based on our experience with the S1, HGF and FXT types of circuit breakers, the improved GL300 series is safer and more reliable. It offers a new generation spring operating mechanism and tie rod that enable quick and easy onsite installation.

This range of live tank circuit breakers can be used everywhere...

dead-tank circuit breaker / high-voltage - max. 550 kV | DT series

The circuit breaker is key to substation safety and security. The high performance Alstom Grid Dead Tank circuit breaker, based on state of-the-art technology, has proven reliability. It requires almost no maintenance and is easy to install.

The SF6 Dead tank circuit breakers accommodate customer needs with high level...

generator circuit breaker - max. 28 000 A, 1 000 MW | FKG series

Whether for installations in new power plants or for refurbishment of existing ones, by using our cutting edge technology in the field of spring operating mechanisms, ALSTOM Grid offers you the perfect Generator Circuit Breaker solution for your specific needs up to 28,000 A.

The FKG1 and FKG2 Circuit breakers provide you with the perfect solution for your specific...

generator circuit breaker - FKG series

A new GCB with the latest technology does not need maintenance during the first 5 years and offers a warranty period. Unlike an old GCG that requires...

generator circuit breaker - max. 36 kV, 275 kA | PKG series

This PKG circuit breaker and load break switch are used to make power plants at 2000 MW in size easier to...

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generator circuit breaker - max. 36 kV, 275 kA | PKG series

RMSI25 and RMSI63 are two circuit breakers that are suitable for currents up to 63A. In addition to this, the devices are often used for protecting motors and several loads, being fitted with instantaneous...

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mini circuit breaker - 2 - 63 A, 230 - 400 V | S7 series

The Home-Miniature Circuit Breaker or S7 is specifically designed for circuit protection illumination, production and distribution for...

mini circuit breaker - 2 - 63 A, 230 - 400 V | CSB02 series

The CSB02 series by Bolevo is a miniature circuit breaker designed to be compatible with all kinds of circuit protection and distribution of power. It features...

mini circuit breaker - 2 - 63 A, 230 - 400 V | CSB01 series

The CSB01 miniature circuit breaker is utilized in providing circuit protection of illumination and distribution. It can also be used in...

mini circuit breaker - 1 - 63 A, 230 - 400 V | DZ47-63 series

The DZ47-63 is manufactured by Bolevo, and is a mini circuit breaker that is suitable to use on all kinds of circuit protection...

mini circuit breaker - 1 - 63 A, 230 - 400 V | M7/BCB01 series

The M7/BCB01 series of miniature circuit breakers is perfectly suitable for the protection of any circuit that conducts the illumination and distribution in industrial and...

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mini circuit breaker - 3 - 10 kA | 50 series

WERNERS 50 series miniature circuit breakers provide the customer a comprehensive efficient, reliable protection of equipments, cables and installations in buildings for over load and short circuit.

Ranging...

molded case circuit breaker - 25 - 70 kA | 51 series

Werner MCCB 51 Series circuit breakers contains a modular and solid design that consumes little space. This economically efficient device utilizes a unique technology in...

motor protection circuit breaker - max. 63 A | 55 series

WERNERS 55 motor protection circuit breakers are designed for comprehensive overload, as well as to protect against short circuits. They have often been regarded as the best in the supervision of motors, which is...

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circuit breaker with Type-2 surge arrester - 25 - 63 A, 15 - 40 kA | V-CHECK MPT

The V - CHECK MPT is a series of of combined 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...

circuit breaker with Type-2 surge arrester - 10 - 63 A, 230 V

THE CPT CIRPROTEC V-CHECK MPT mini overvoltage protection devices belong to the range of combined transient and power frequency overvoltage product series, and are very compact,...

circuit breaker with Type-2 surge arrester - 6 - 63 A, 15 - 20 kA | V-CHECK MR

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...

earth-leakage circuit breaker / programmable - 6 - 63 A | Overcheck

The overcheck is a coverage of programmable, motorized tools, compromises a monitoring unit and a circuit breaker. It disconnects the supply when voltage values, current or earth leakage...

earth-leakage circuit breaker / programmable - Overcheck MT

The Overcheck MT is an adjusting and motorizing device that consists of a circuit breaker and monitoring unit. The circuit breaker disconnects the supply when there is an excess...

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motor protection circuit breaker - 0.1 - 32 A | M

Manual motor starter – M has short-circuit and overload protection. Its Overload range...

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motor protection circuit breaker - 0.1 - 32 A | M

Orbit Breakers provide values between 20mA to 50, thermal types offer 1 to 2 pole sections and...

motor protection circuit breaker - 0.1 - 32 A | M

Thermal circuit breakers are available with rocker, push-pull,...

vacuum circuit breaker / medium-voltage - 15, 25 kV

The VESA Rolling Stock Vacuum Circuit Breaker is specially made for electric...

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thermal circuit breaker - 1 - 40 A | W23 series

The W23-X1A1G-1 is a thermal circuit breaker manufactured by TE Connectivity. Operating on...

thermal circuit breaker - 0.25 - 20 A | W28 series

The W28-XQ1A-0.25, manufactured by TE, is a thermal circuit breaker...

thermal circuit breaker - 1 - 40 A | W31 series

The W31-X2M1G-1, manufactured by TE, is a thermal circuit breaker that...

thermal circuit breaker - 5 - 20 A | W33 series

The W33-S1N1Q-15, manufactured by TE, is a thermal circuit breaker that has...

thermal circuit breaker - 5 - 20 A | W51 series

The W51-A121B1-10, manufactured by TE, is a thermal circuit breaker that has...

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mini circuit breaker - ETIMAT 6 series

Description
Miniature circuit breakers series ETIMAT 6 are high quality devices, produced in EU, with following technical characteristics:

Rated short-circuit capacity: 6.000 A
Number of poles: 1p, 1p+N, 2p, 3p, 3p+N
Rated voltage: 230/400 V a.c., max. 60 V d.c.
Tripping...

remote-control circuit breaker - 1.5 A, 230 V | ETIMAT RC

The ETIMAT RC is a remote control circuit breaker that provides a protected remote switching and occupies a small amount...

mini circuit breaker - max. 440 V | ETIMAT DC

ETIMAT P10 DC series miniature circuit breaker is a protective system for conductor assemblies within direct current electric...

motor protection circuit breaker - MPE series

The motor protective circuit breakers feature fixed shors circuit release 12 x Iu. It has also overload and short circuit...

motor protection circuit breaker - max. 400 V, 11 kW | MS25, MST25 series

The product has main applicationsin control (start-up, switch-off and protection) of AC electrical motors with power nearly 11 kW to 25 A; this can be also used as main switch as per VDE 0113 or EN...

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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.

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