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Circuit breakers protect industrial automation systems by safely interrupting electrical currents in the event of overloads or faults. They ensure equipment and personnel remain safe while maintaining system uptime. MRO Electric provides fully tested replacement breakers and expert repair services to minimize downtime and ensure long-lasting performance across diverse industrial environments.
3RW3036-1AB04 | Siemens Breakers
QO120GFI | Schneider Electric Circuit Breakers
3LV1107-2KM30-0AA0 | Siemens Breakers
Circuit breakers are essential for protecting industrial equipment and maintaining system reliability. MRO Electric supplies high-quality breakers designed for durability, performance, and fast integration.
Circuit breakers are used across industries such as manufacturing, packaging, material handling, and robotics. They protect and control equipment like CNC machines, conveyor systems, pumps, and robotic cells, ensuring safe and reliable operation in high-demand environments.
Selecting the proper circuit breaker is critical for safety and system performance. Consider key specifications including voltage, current rating, interrupting capacity, trip characteristics, and physical dimensions. Ensure compatibility with your existing automation brand—whether Siemens, Allen-Bradley, Schneider Electric, or others. MRO Electric’s team can provide guidance to choose the correct breaker for your system to prevent downtime and protect equipment.
MRO Electric offers large in-stock inventory, 24-hour shipping, OEM-level repair services, and responsive technical support. Every circuit breaker is fully tested and warranty-backed, ensuring reliable protection for your industrial automation systems.
Siemens Circuit Breakers
CONTACTOR, SIZE 4, 2-POLE DC-3 AND 5,RATD.OPERAT.CURR.75A AUXILIARY CONTACTS 22 (2NO+2NC) DC OPERATION DC 24V
Siemens Circuit Breakers
CONTACTOR, SIZE 4, 2-POLE DC-3 AND 5,RATD.OPERAT.CURR.75A AUXILIARY CONTACTS 22 (2NO+2NC) DC OPERATION DC 125V
Siemens Circuit Breakers
CONTACTOR, SIZE 8, 2-POLE DC-3 AND 5,RATD.OPER.CURR. 220A AUXILIARY CONTACTS 22 (2NO+2NC) DC OPERATION DC 24V
Siemens Circuit Breakers
CONTACTOR, SIZE 8, 2-POLE DC-3 AND 5,RATD.OPER.CURR. 220A AUXILIARY CONTACTS 22 (2NO+2NC) DC OPERATION DC 110V
Siemens Circuit Breakers
CONTACTOR, SIZE 8, 2-POLE DC-3 AND 5,RATD.OPER.CURR. 220A AUXILIARY CONTACTS 22 (2NO+2NC) AC OPERATION AC 230/220V 50HZ,276/264V 60HZ
Siemens Circuit Breakers
CONTACTOR SIZE 12, 2-POLE DC-3 AND 5,RATD.OPER.CURR. 400A AUXILIARY CONTACTS 22 (2NO+2NC) DC OPERATION DC 24V
Siemens Circuit Breakers
CONTACTOR 3 POLES, 17 AMP, 5 HP @ 230 V, 10 HP @ 460 V, 230/460 VAC, S1
Siemens Circuit Breakers
CONTACTOR SIZE 14, 3-POLE AC-3, 335KW, 400/380V (690V) AUXILIARY CONTACTS 44 (4NO+4NC) AC OPERATION AC 110 TO 132V 50/60HZ
Siemens Circuit Breakers
CONTACTOR SIZE 14, 3-POLE AC-3, 335KW, 400/380V (690V) AUXILIARY CONTACTS 44 (4NO+4NC) AC OPERATION AC 500 TO 600V 50/60HZ
Siemens Circuit Breakers
CONTACTOR SIZE 14, 3-POLE AC-3, 450KW, 400/380V (690V) AUXILIARY CONTACTS 44 (4NO+4NC) AC OPERATION AC 110 TO 132V 50/60HZ
Siemens Circuit Breakers
CONTACTOR COMBINATION FOR SAFETY CIRCUITS ENABLING AND SIGNALLING CIRCUIT 5N0+1NC, AC-OPERATION AC OPERATION AC 24V 50/60HZ
Siemens Circuit Breakers
CONTACTOR COMBINATION FOR SAFETY CIRCUITS ENABLING AND SIGNALLING CIRCUIT 5N0,1NC,3NO DELAYED WITH T=0.5UP TO 300N0, AC-OPERATION AC 110V 50/60HZ
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Siemens Circuit Breakers
CONTACTOR SAFETY CIRCUITS ENABLING/ SIGNALLING CIRCUIT 5NO+1NC, 3NO DELAYED
Siemens Circuit Breakers
SAFETY RELAY, SIRIUS, 24 VAC/DC, 3 N/O OUTPUTS, 1 N/C OUTPUT, AUTOMATIC/MANUAL START, FINGER-SAFE, RELAY ENABLING CIRCUITS, 22.5 MM WIDTH, SCREW TERMI...
Siemens Circuit Breakers
CIRCUIT BREAKER SAFETY RELAY, 24 VAC/DC, 22.5 MM SPRING-TYPE TERMINAL, 3NO DELAYED, 1NC AUTO/MANUAL START
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