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Circuit breakers
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Primary current: 0.5 A - 63 A
VAC: 277, 480, 240 V
VDC: 96, 48 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 ...
Allen Bradley
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 ...
ABB AG
Primary current: 43 mA
VDC: 24 V
Rating: 4 A
... 1 A 1 A 1 A Output current limitation min./max. - 9 / 12.7 A Turn-on delay of outputs - 270 ms Shutdown-times at short circuit, typ. - 110 ms Overview Dimensions (WxHxD) - 45 mm x 75 mm x 91 mm Weight per unit ...
PULS GmbH
... 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 ...
Make electrical equipment multi-functional by means of Mitsubishi air circuit breakers that are suitable for protection of the main circuit. Air circuit breakers ...
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 ...
Primary current: 1,000 A - 6,300 A
VAC: 500 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 ...
MITSUBISHI Automation
Primary current: 0.5 A - 63 A
VAC: 480, 230, 400 V
VDC: 48, 96 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 ...
Allen-Bradley
Primary current: 0.5 A - 30 A
Electromechanical Circuit Breakers (CB) with several different terminals (FASTON, EN, MIL...) and accessories.
Crouzet
Primary current: 32 A
VAC: 600 V
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 ...
ABB
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 ...
Eaton
Primary 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.
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. ...
Primary current: 800 A - 6,300 A
VAC: 220, 415 V
Future Ready ! MasterPact MTZ is a comprehensive range of air circuit breakers, to protect from damage caused by overloads, short-circuits or insulation faults. MasterPact MTZ embeds ...
Schneider Electric
Primary current: 40 A
VAC: 240 V
VDC: 50 V
Circuit Breakers, Thermal, Series Trip, Silver, Operating Voltage 240 VAC, Operating Voltage 50 VDC, 40A Current Rating, Potter & Brumfield W23-31 • TE Internal Description: W31-X2M1G-40=W23/W31 • ...
TE CONNECTIVITY
Primary current: 30 mA - 125,000 mA
... protection class is A type with a sensitivity of 30mA and a voltage independent technology. This product protects against short circuit, cable overload, electrical shock by indirect contact and fire hazards. This product ...
Schneider Electric
Rating: 60 A
... Eaton’s BR two-pole ground fault circuit breaker boasts an improved series rating, offering additional combinations up to 60 A. And with higher interrupts and #3AWG lugs that reduce wiring costs, the ...
Primary current: 7,150, 6,900 A
VAC: 24 kV
System type generator circuit-breaker (GCB) with innovative built-in monitoring The HVS-63S GCB with SF6 interrupting technology for short-circuit currents up to 63 kA and rated currents ...
Primary current: 29,000, 20,000 A
VAC: 31.5, 33 kV
... rated generator-source short-circuit breaking current characterized at contact separation by a degree of asymmetry of 130 percent with the assigned a.c.component (alternating current) of the rated generator-source short-circuit ...
Primary current: 2,500 A
VAC: 72.5 kV
Well proven circuit breaker based on established design, assembled and tested for rapid installation The EDF SK is a live tank SF6 Auto-Puffer™ circuit breaker. It has ...
Primary current: 1,000 A - 6,000 A
VAC: 690 V
This kind of breaker is used as the main power breaker of the supply such as buildings, factories and ships etc. and satisfy the various needs.
MITSUBISHI ELECTRIC AUTOMATION
Primary current: 4,000, 2,500, 5,000 A
VAC: 72.5 kV - 800 kV
... tank circuit breakers for applications from 72.5 kV to 800 kV, up to 80 kA, suitable for all different types of applications, in extreme temperatures or earthquake regions. Depending on the requirement, ...
Siemens High-voltage – Power transmission
Primary current: 2.5, 1.6 A
... current [A] - 28 A Packing format - Multi pack Product group - Contactors and motor starters Product Name Description - Circuit breaker Quantity per packing format - 23 pc REACH Candidate List substances ...
Primary current: 1,200 A - 5,000 A
VAC: 72,000 V - 550,000 V
The actual circuit breaker is essential toward substation protection along with safety. The actual great efficiency Alstom Grid Dead Tank circuit breaker, designed with ...
Alstom Grid
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. ...
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 ...
Primary current: 6 A - 63 A
VAC: 240, 415 V
The motorized circuit breakers of the MT Series can be associated remotely. They protect against short-circuits and overloads, but are also used as a circuit breaker. ...
Primary current: 80 A - 125 A
VAC: 230 V - 400 V
Circuit breakers PR121 - PR122 - PR123 - PR124 series 1- to 4-pole circuit breakers, from 80 to 125 A. B and C curves.
VAC: 30 V
VDC: 30 V
Rating: 0.1 A - 30 A
... contacts and minimizes arcing. SNAPAK® circuit protectors are UL Recognized as supplementary protectors per UL STD. 1077, CSA Certified as supplementary protectors per CSA STD. C22.2 No. 235, TUV Approved as circuit ...
Sensata Technologies
Primary current: 0.1 A - 100 A
VAC: 480, 240, 277 V
VDC: 125, 160 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 ...
Sensata Technologies
Primary current: 2 A - 20 A
VAC: 240, 277 V
The LEJ/LEJA series circuit breaker meets the evolving demand for the high-performance protection of critical data center and telecommunications applications requiring up to 277VAC per pole, UL 489 listing ...
Sensata Technologies
Primary current: 30 A - 50 A
Circuit breakers offer circuit protection, which is far superior to fuses in applications containing relay circuits, motors, heaters, transformers, solenoids and semiconductors.
Primary current: 1 A - 63 A
VAC: 400, 230, 415 V
VDC: 10 V - 10 V
DZ47 AC MCB circuit breaker series is used in lighting distribution system or motor distribution system for protecting overload and short-circuit condition. The product is light in weightreliable ...
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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.
ApplicationsCircuit breakers are used in industrial facilities to protect circuits and electrical machinery.
TechnologiesThermal 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.
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