Circuit breakers

106 companies | 544 products

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 PKE - Ready für "IE3"

PKE motor-protective circuit-breakers with electronic wide-range overload protection offer an interesting...

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....

{{productDetail[5067]}}

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

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

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

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

The new SACE Tmax XT shaped-case circuit-breakers up to 250A proceed the custom of the well-known and...

{{productDetail[88554]}}

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...

{{productDetail[7457]}}

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

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

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

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...

{{productDetail[7208]}}

MS132 is a compact and powerful range in 45 mm width for motor protection up 15 kW (400 V) / 32 A. This...

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...

{{productDetail[123473]}}

Bulletins 140G Molded Circumstance Signal Breakers have 8 different body sizing's having a selection...

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

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

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

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

{{productDetail[7901]}}

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

According to estimates, more than 30 million molded case circuit breakers are installed worldwide every year. Thats a significant number for one of the most important components in modern low-voltage power distribution.
State-of-the-art molded...

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...

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...

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....

{{productDetail[25580]}}

With the CT contactor series from Schaltbau is an innovative contractor concept which is great for the electric arc control technologyin the market. Power contactors ,together with their style and design are completely new . It has been developed only for the purpose of attending...

The CVB 15/08 series is a vacuum circuit breaker which is designed specifically to be considered as the main electrical switch and a device protecting the AC locomotives and its electrical multiple...

{{productDetail[13888]}}

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...

The CG Porcelain Clad VCB is a vacuum circuit breaker that is specifically manufactured for use in outdoor applications. This breaker...

The KIOSK model engineered by CG Power Systems, is an outdoor vacuum circuit breaker that is specifically created for unmanned substations...

36 KV INDOOR SF6 GCB

Product Overview
The GCB is a high quality product which...

36 kV Outdoor GCB

Product Overview

The 36kV Outdoor GCB is specially developed and designed for rural and remote distribution networks. The product is developed to be a standalone and free standing device. The GCBs are of live tank design....

{{productDetail[13988]}}

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

{{productDetail[20885]}}

The specialty of MCB-T or MCB-P lies in the combination of the functions of a contractor and that of a circuit breaker of the same element. MCBs generally have two options:


Closed circuit-breaker:...

The RECmaxLPD Series is an automatic device that has an earth leakage circuit that measures leakage currents. This is usually used in electrical, single-phase and three-phase installations...

Circutor's RECmaxMP are the motorized circuit breakers which can be connected remotely. They serve as a security against short circuit...

The MT-FDE Series is a motor-driven circuit breaker designed to provide resistance against short circuits and overloads....

The MT series motorized circuit breaker functions through securing a specified system from...

{{productDetail[11644]}}

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

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

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

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

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

{{productDetail[26734]}}

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

The thermal circuit breakers are delivered with rocker, push-pull, toggle...

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

{{productDetail[26732]}}

The CMBA/CLBA-Series feature automatic cycling...

The CMBA/CLBA-Series feature automatic cycling...

The A-Series hydraulic/magnetic circuit breakers are compact and temperature stable designed for precision operation in OEM markets requiring general purpose as well as full load amp applications. These circuit...

The B-Series hydraulic/magnetic circuit breakers are compact and temperature stable designed for precision operation in OEM markets requiring general purpose...

The C-Series remote operated circuit breaker consists of a custom designed remote operated motor module (housed within a circuit breaker molding) coupled to a C-Series hydraulic/magnetic circuit breaker. The remote operated circuit...

{{productDetail[9181]}}

The 45mm wide MS32 motor protection switches are ideal for electric motor startup and protection. They have uses in industry, agricultural machines, repair shops, compressors,...

MS25 are switches specifically devised for the protection of motors. They are used in electric motors to protect/start-up motors of compressors, agricultural...

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...

The Miniature Circuit Breakers RI 20 are created for overcurrent protection of...

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

{{productDetail[40394]}}

The DRIESCHER Indoor Vacuum Circuit Breaker. The circuit breakers are designed for normal operating conditions in...

{{productDetail[26839]}}

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

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...

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

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

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...

{{productDetail[64070]}}

VSm-24 indoor AC high voltage vacuum circuit breaker, equipped with permanent magnet mechanism,...

ZN63S-12(VSI+) indoor high voltage AC vacuum circuit...

ZW32 outdoor High Voltage AC Vacuum circuit Breaker is a new...

{{productDetail[133227]}}

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.

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

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.

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.

Subscribe to our newsletter
Thank you for subscribing
There was a problem with your request
Invalid email address

Receive updates on this section every two weeks.

With DirectIndustry you can: Find a nearby distributor | Contact the manufacturer to get an estimate or a price Examine product characteristics and technical specifications | View PDF catalogs and other online documentation