Square D
QOB250
Square D QOB250 QO Bolt-On Miniature Circuit Breaker 2-Pole 50A 120/240V 10kA
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$15.89
Miniature & DIN Rail Circuit Breakers
303 listings · 261 in stock
303 miniature & DIN rail circuit breakers listings from the brands you use, each one photographed. Free shipping to all 50 US states.
Weekly new-arrivals email for Miniature & DIN Rail Circuit Breakers
Eaton
FAZ-C3/1-NA-SP
Eaton FAZ-C3/1-NA-SP 167127 Miniature Circuit Breaker 1 Pole 3A C Curve 277VAC
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$9.89
Schneider Electric
C60H-DC
Schneider Multi 9 C60H-DC C2A 500VDC 2 Pole DC Mini Circuit Breaker LOT OF 5
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$48.89 / lot of 5
Eaton
FAZ-C2/1-NA-SP
Eaton FAZ-C2/1-NA-SP xEffect Miniature Circuit Breaker 1-Pole 2A C-Curve 277VAC
In stock
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$14.89
Fuji Electric
CP33FM/30
Fuji Electric CP33FM/30 CP33F-M030 Circuit Protector Breaker 3-Pole 30A AC250V
Only 2 left
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$8.89
Industrial part
UL489
Noark E355392 Miniature Circuit Breaker 1 Pole 240VAC 10kA UL489 DIN Rail Part
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$10.89
Allen-Bradley
1489-M1C200
Allen-Bradley 1489-M1C200 Miniature Circuit Breaker 1 Pole 20A C Curve UL489
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$9.89
Allen-Bradley
1489-M1C160
Allen-Bradley 1489-M1C160 Ser D Miniature Circuit Breaker 1 Pole 16A 277V DIN
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$20.89
ABB
S272-C16
ABB S272-C16 Miniature Circuit Breaker 2 Pole 16A C Curve 400V 10kA DIN Rail
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$46.89
Siemens
5SX21
Siemens 5SX21 D3 Miniature Circuit Breaker 3A 1 Pole 230/400V 277VAC 6kA DIN
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$8.89
Siemens
5SX22
Siemens 5SX22 D2 Miniature Circuit Breaker 2A 2 Pole 230/400V 480VAC DIN Rail
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$8.89
Allen-Bradley
1492-CB3
Allen-Bradley 1492-CB3 H030 Miniature Circuit Breaker 3A 3 Pole 277VAC DIN Rail
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$10.89
Eaton
FAZ-C1/1
Eaton Moeller FAZ-C1/1 Miniature Circuit Breaker 1 Pole 1A C Curve 277VAC DIN
Only 1 left
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$8.89
Mitsubishi
CP30-BA
Mitsubishi Electric CP30-BA Circuit Protector 7A 2 Pole 220VAC 2.5kA Curve M
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$8.89
Mitsubishi
CP30-BA
Mitsubishi Electric CP30-BA Circuit Protector 2A 1 Pole 220VAC 2.5kA Curve M
In stock
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$8.89
Eaton
FAZ-C3/1
Eaton FAZ-C3/1 Miniature Circuit Breaker 3A 1 Pole C Curve 277VAC DIN Rail Mount
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$8.89
Mitsubishi
CP30-BA
Mitsubishi CP30-BA 2A Circuit Protector 220VAC 2.5kA Breaker AC DC Panel Mount
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$8.89
Eaton
FAZ-D5/3-RT
Eaton FAZ-D5/3-RT Miniature Circuit Breaker 5A 3 Pole D Curve 480V 10kA DIN
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$32.89
Allen-Bradley
1492-SP1C010
Allen-Bradley 1492-SP1C010 Ser C Miniature Circuit Breaker 1A 1 Pole 240/415V
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$8.89
Eaton
FAZ-C2/1
Eaton Moeller FAZ-C2/1 Miniature Circuit Breaker 2A 1 Pole C Curve 240-415V DIN
Only 4 left
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$8.89
Mitsubishi
CP30-BA
Mitsubishi Electric CP30-BA 1A Circuit Protector Breaker AC 220V 230VAC 2.5kA
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$8.89
Allen-Bradley
1492-SPM1C010
Allen-Bradley 1492-SPM1C010 Ser D Supplementary Protector 1A 1 Pole 277V 48VDC
Only 1 left
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$10.89
LS Electric
BK63HU
LS Electric BK63HU 2-Pole 3A Type C Miniature Circuit Breaker 440V 6kA DIN Rail
Only 1 left
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$18.89
Siemens
5SY7120-7
Siemens 5SY7120-7 Miniature Circuit Breaker MCB 1P C20 230/400V 50/60Hz DIN Rail
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$19.89
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Guides for Miniature & DIN Rail Circuit Breakers
- Circuit protectionMolded Case Circuit Breaker Ratings & ReplacementsFrame size, trip rating, interrupting rating (kA), voltage and slash ratings, trip units and mounting, and a checklist for a safe replacement.
- Parts identificationHow to Read Breaker & VFD Nameplates and Date CodesFrame, trip and interrupting ratings on breakers; input, output, duty ratings and series on drives, and where to look for the date of manufacture.