Miniature Circuit Breakers (MCB)

Shop miniature circuit breakers for control panels, DIN-rail assemblies, distribution boards, machinery, lighting, and branch-circuit applications.

Selection factors include UL 489 or UL 1077 application, voltage, poles, amp rating, interrupting rating, B/C/D trip curve, terminal arrangement, supplementary contacts, and mounting dimensions. An MCB with the same amp rating is not automatically an approved replacement.

Send the exact catalog number and label photos to sales@ampstate.com for technical matching. View all circuit breakers.

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ABB S203-K32 - 3-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

ABB S203-K32 - 3-Pole, Miniature Circuit Breaker (MCB)

Regular price $274.00
Sale price $274.00 Regular price
Unit price
ABB S203-K32 is a 3-Pole Miniature Circuit Breaker (MCB) engineered for reliable overcurrent protection in...
Thomas TB260 - 60A 2-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

Thomas TB260 - 60A, 2-Pole, Miniature Circuit Breaker (MCB)

Regular price $145.00
Sale price $145.00 Regular price
Unit price
Meet the Thomas TB260 60A, 2-Pole Miniature Circuit Breaker (MCB) — a compact, robust solution...
Square D QO335 - 35A 3-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

Square D QO335 - 35A, 3-Pole, Miniature Circuit Breaker (MCB)

Regular price $259.00
Sale price $259.00 Regular price
Unit price
Square D QO335 - 35A, 3-Pole, Miniature Circuit Breaker (MCB) is engineered to provide reliable...
Dc 14V - Miniature Circuit Breaker (MCB) - Circuit Breaker

Dc 14V - Miniature Circuit Breaker (MCB)

Regular price $61.00
Sale price $61.00 Regular price
Unit price
The DC 14V Miniature Circuit Breaker (MCB) is engineered to deliver dependable overcurrent protection for...
Square D QO260VH - 60A 240VAC 2-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

Square D QO260VH - 60A, 240VAC, 2-Pole, Miniature Circuit Breaker (MCB)

Regular price $127.00
Sale price $127.00 Regular price
Unit price
The Square D QO260VH is a purpose-built 60A, 240VAC, 2-Pole Miniature Circuit Breaker (MCB) designed...
Square D EDB14030EPD - 30A Miniature Circuit Breaker (MCB) - Circuit Breaker

Square D EDB14030EPD - 30A, Miniature Circuit Breaker (MCB)

Regular price $743.00
Sale price $743.00 Regular price
Unit price
The Square D EDB14030EPD - 30A, Miniature Circuit Breaker (MCB) is engineered to deliver reliable...
Crouse-Hinds MH240 - 240A 2-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

Crouse-Hinds MH240 - 240A, 2-Pole, Miniature Circuit Breaker (MCB)

Regular price $99.00
Sale price $99.00 Regular price
Unit price
The Crouse-Hinds MH240 is a rugged 240A, two-pole miniature circuit breaker designed to deliver dependable...
GEYA 6/10/16/25/32/40/50/63A - 50-63A 2-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

GEYA 6/10/16/25/32/40/50/63A - 50-63A, 2-Pole, Miniature Circuit Breaker (MCB)

Regular price $50.00
Sale price $50.00 Regular price
Unit price
Meet the GEYA 50-63A 2-Pole Miniature Circuit Breaker (MCB), a compact, dependable protective device designed...
Universal 500V - 2-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

Universal 500V - 2-Pole, Miniature Circuit Breaker (MCB)

Regular price $25.00
Sale price $25.00 Regular price
Unit price
The Universal 500V - 2-Pole Miniature Circuit Breaker (MCB) is built for reliability in demanding...
GE TMQV22150MM - 150A 2-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

GE TMQV22150MM - 150A, 2-Pole, Miniature Circuit Breaker (MCB)

Regular price $596.00
Sale price $596.00 Regular price
Unit price
The GE TMQV22150MM is a rugged 150A, 2-pole miniature circuit breaker (MCB) engineered for dependable...
P 6AMP-125AMP - 6A 3-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

P 6AMP-125AMP - 6A, 3-Pole, Miniature Circuit Breaker (MCB)

Regular price $48.00
Sale price $48.00 Regular price
Unit price
The P 6AMP-125AMP is a compact 6A, 3-pole miniature circuit breaker (MCB) designed to deliver...
GEYA 6KA - 100-125A 2-Pole Miniature Circuit Breaker (MCB) - Circuit Breaker

GEYA 6KA - 100-125A, 2-Pole, Miniature Circuit Breaker (MCB)

Regular price $48.00
Sale price $48.00 Regular price
Unit price
The GEYA 6KA - 100-125A, 2-Pole Miniature Circuit Breaker (MCB) is engineered to deliver dependable...
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