SIRIUS 3RV2 Circuit Breakers

Siemens SIRIUS 3RV2 Circuit Breakers are motor starter protectors that reliably protect equipment during a short circuit. When a short-circuit event (>13 times the rated current) occurs, the short-circuit releases isolate the faulty load feeder from the power supply within milliseconds. This quick response avoids fire damage and other significant harm to components. Siemens SIRIUS 3RV2 Circuit Breakers feature a lockable operating mechanism for manual closing/opening that prevents unauthorized access and ensures trouble-free operation. These motor starter protectors come in various sizes and are designed for flexible assembly using screw and spring-type terminals. These circuit breakers cover all the tasks of protecting motors, starters, transformers, and UL 489 applications.

Results: 708
Select Image Part # Mfr. Description Datasheet Availability Pricing (JPY) Filter the results in the table by unit price based on your quantity. Qty. RoHS
Siemens Circuit Breakers TMCB UL489 S00 5A SCREW 3In Stock
Min.: 1
Mult.: 1

Siemens Circuit Breakers TMCB UL489 S00 6.3A SCREW 1In Stock
Min.: 1
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Siemens Circuit Breakers TMCB UL489 S00 10A SCREW 1In Stock
5Expected 8/28/2026
Min.: 1
Mult.: 1

Siemens Circuit Breakers TMCB UL489 FOR XFRMR S00 1.6A SCREW 1In Stock
Min.: 1
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Siemens Circuit Breakers TMCB UL489 FOR XFRMR S00 5A SCREW 3In Stock
Min.: 1
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Siemens Auxiliary Contacts LATERAL AUXILIARY SWITCH 1NO+1NC SCREW 44In Stock
Min.: 1
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Siemens Auxiliary Contacts LATERAL AUXILIARY SWITCH 2NO SCREW 7In Stock
Min.: 1
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Siemens Auxiliary Contacts TRANSVERSE AUX. SWITCH 2NO SCREW 7In Stock
Min.: 1
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Siemens Auxiliary Contacts LATERAL AUXILIARY SWITCH 2NO+2NC SCREW 6In Stock
Min.: 1
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Siemens Auxiliary Contacts LATERAL AUXILIARY SWITCH 1NO+1NC SPRING 3In Stock
Min.: 1
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Siemens Auxiliary Contacts TRANSVERSE AUX. SWITCH 1NO+1NC SPRING 18In Stock
Min.: 1
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Siemens Auxiliary Contacts TRANSVERSE AUX. SWITCH 2NO SPRING 9In Stock
Min.: 1
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Siemens Contactor Accessories CONTACTOR BASE S00 FOR 3RV29 1In Stock
Min.: 1
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Siemens Auxiliary Contacts SIGNALING SWITCH FOR MSP 2NO/2NC SCREW 3In Stock
Min.: 1
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Siemens Switch Hardware DOOR-COUPLING ROT.OPER.MECH. S.S00...S3 3In Stock
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Siemens Switch Hardware DOOR-COUPLING ROT.OPER.MECH. S.S00...S3 5In Stock
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Siemens Switch Hardware DOOR-COUPLING ROT.OPER.MECH. S.S00...S3 2In Stock
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Siemens Switch Hardware DOOR-COUPLING ROT.OPER.MECH. Size S00/S0 3In Stock
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Siemens Switch Hardware DOOR-COUPLING ROT.OPER.MECH. Size S00/S0 3In Stock
Min.: 1
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Siemens Circuit Breakers MSP S0 11-16A AUX 1NO 1NC SPRING 4In Stock
Min.: 1
Mult.: 1

Siemens Circuit Breakers MSP S2 CLASS 10 49-59A SCREW 1In Stock
2Expected 10/16/2026
Min.: 1
Mult.: 1

Siemens Circuit Breakers CIRCUIT BREAKER, SZ 00, CLASS 10, F. MP
27On Order
Min.: 1
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Siemens Circuit Breakers MSP S0 9 - 12.5A SCREW
10Expected 9/9/2026
Min.: 1
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Siemens Circuit Breakers MSP S00 2.8-4A SPRING
5On Order
Min.: 1
Mult.: 1

Siemens Circuit Breakers MSP S00 0.11-0.16A SCREW Non-Stocked Lead-Time 5 Weeks
Min.: 1
Mult.: 1