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Collection: MCBs (Circuit Breakers)

Miniature circuit breakers (MCBs) for consumer units and electrical panels.

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37 products

E.NEXT Miniature Circuit Breaker 1P C10A 4.5kA

Other

Miniature Circuit Breaker

E.NEXT Miniature Circuit Breaker 1P C10A 4.5 kA – Type C, 230/400 V & DIN Rail

Regular price $5.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/C6A/4.5kA

Other

Miniature Circuit Breaker

Wico Miniature Circuit Breaker 1P C6A 4.5 kA – Curve C, 230/400 V & DIN Rail

Regular price $4.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/D25A/4.5kA

Other

Miniature Circuit Breaker

Wico MCB 1P D25 A 4.5 kA DIN Rail – D-Curve, EN 60898-1 & 230/400 V AC

Regular price $4.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/D20A/4.5kA

Other

Miniature Circuit Breaker

Wico MCB 1P D20 A 4.5 kA DIN Rail – D-Curve, EN 60898-1 & 230/400 V AC

Regular price $4.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/D16A/4.5kA

Other

Miniature Circuit Breaker

Wico MCB 1P D16 A 4.5 kA DIN Rail – D-Curve, EN 60898-1 & 230/400 V AC

Regular price $4.00
Sale price Regular price
RP E.NEXT - Miniature circuit breaker 1P/C25A/10kA

Other

Miniature Circuit Breaker

E.NEXT MCB 1P C25 A 10 kA 230/400 V – Type C Curve, DIN Rail & IP20

Regular price $7.00
Sale price Regular price
E.NEXT Miniature Circuit Breaker 1P C20A 4.5kA

Other

Miniature Circuit Breaker

E.NEXT Miniature Circuit Breaker 1P C20A 4.5 kA – Type C, 230/400 V & DIN Rail

Regular price $5.00
Sale price Regular price
REDLED Onesto Three-Phase MCB 3P C16 A 4.5 kA – Curve C, DIN Rail, IEC 60898

REDLED

Miniature Circuit Breaker

REDLED Onesto Three-Phase MCB 3P C16 A 4.5 kA – Curve C, DIN Rail, IEC 60898

Regular price $12.00
Sale price Regular price
RP- Onesto - Miniature circuit breaker 1P+N/C16A/4.5kA

REDLED

Miniature Circuit Breaker

RP- Onesto - Miniature circuit breaker 1P+N/C16A/4.5kA

Regular price $9.00
Sale price Regular price
RP- Onesto - Miniature circuit breaker 1P+N/C16A/4.5kA

REDLED

Miniature Circuit Breaker

RP- Onesto - Miniature circuit breaker 1P+N/C16A/4.5kA

Regular price $9.00
Sale price Regular price
RP-Onesto Miniature Circuit Breaker 3P C63A 4.5kA – DIN Rail, 415V IP20

REDLED

Miniature Circuit Breaker

RP-Onesto Miniature Circuit Breaker 3P C63A 4.5kA – DIN Rail, 415V IP20

Regular price $14.00
Sale price Regular price
RP-Onesto Miniature Circuit Breaker 3P C25A 4.5kA – DIN Rail, 415V IP20

REDLED

Miniature Circuit Breaker

RP-Onesto Miniature Circuit Breaker 3P C25A 4.5kA – DIN Rail, 415V IP20

Regular price $13.00
Sale price Regular price
RP-Onesto Miniature Circuit Breaker 3P C32A 4.5kA – DIN Rail, 415V IP20

REDLED

Miniature Circuit Breaker

RP-Onesto Miniature Circuit Breaker 3P C32A 4.5kA – DIN Rail, 415V IP20

Regular price $13.00
Sale price Regular price
RP-Onesto - Miniature circuit breaker 1P/C6A/4.5kA

REDLED

Circuit Breaker

RP-Onesto MCB 1P C6A – 4.5kA Breaking Capacity, DIN-Rail & C-Curve

Regular price $4.00
Sale price Regular price
RP-Onesto - Miniature circuit breaker 1P/C40A/4.5kA

REDLED

Circuit Breaker

RP-Onesto MCB 1P C40A – 4.5kA Breaking Capacity, DIN-Rail & C-Curve

Regular price $5.00
Sale price Regular price
RP-Onesto - Miniature circuit breaker 3P/C40A/4.5kA

REDLED

Circuit Breaker

RP Onesto MCB 3P C40A 4.5kA – Three-Pole, DIN-Rail & C-Curve Circuit Breaker

Regular price $13.00
Sale price Regular price
RP- Onesto - Miniature circuit breaker 1P+N/C25A/4.5kA

Other

Circuit Breaker

Onesto MCB 1P+N C25A 4.5 kA – DIN Rail Mount, IP20 & Single-Phase Protection

Regular price $9.00
Sale price Regular price
RP-Onesto - Miniature circuit breaker 2P/C25A/4.5kA

Other

Circuit Breaker

RP Onesto MCB Two-Pole C25A 4.5 kA – DIN Rail Mount, IP20 & Overload Protection

Regular price $10.00
Sale price Regular price
RP-Onesto - Miniature circuit breaker 1P/C25A/4.5kA

Other

Miniature Circuit Breaker

RP-Onesto MCB 1P C25A 4.5kA – C-Curve Single-Pole Breaker, DIN Rail & IP20

Regular price $4.00
Sale price Regular price
RP-Onesto - Miniature circuit breaker 1P/C20A/4.5kA

Other

Miniature Circuit Breaker

RP-Onesto MCB 1P C20A 4.5kA – C-Curve Single-Pole Breaker, DIN Rail & IP20

Regular price $4.00
Sale price Regular price
RP-Onesto - Miniature circuit breaker 1P/C16A/4.5kA

Other

Miniature Circuit Breaker

RP-Onesto MCB 1P C16A 4.5kA – C-Curve Single-Pole Breaker, DIN Rail & IP20

Regular price $5.00
Sale price Regular price
RP-Onesto - Miniature circuit breaker 1P/C10A/4.5kA

Other

Miniature Circuit Breaker

RP-Onesto MCB 1P C10A 4.5kA – C-Curve Single-Pole Breaker, DIN Rail & IP20

Regular price $5.00
Sale price Regular price
Wico - Miniature circuit breaker 1P+N/C32A/4.5kA

Other

Circuit Breaker

Wico MCB 1P+N C32A 4.5kA – Type C Curve, DIN Rail & EN 60898-1

Regular price $12.00
Sale price Regular price
Wico - Miniature circuit breaker 1P+N/C25A/4.5kA

Other

Circuit Breaker

Wico 1P+N C25A 4.5 kA Miniature Circuit Breaker – Type C Curve, DIN Rail & EN 60898-1

Regular price $12.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/C40A/4.5kA

Other

Circuit Breaker

Wico 1P C40A 4.5 kA Miniature Circuit Breaker – Type C Curve, DIN Rail & EN 60898-1

Regular price $4.00
Sale price Regular price
Kedu - Miniature circuit breaker 1P/C32A/6kA
Wico - Miniature circuit breaker 1P/C32A/4.5kA
Wico - Miniature circuit breaker 3P/D3X25A/6kA

Other

Miniature Circuit Breaker

Wico Miniature Circuit Breaker 3P D3×25A 6 kA – Curve D, 230/400 V & DIN Rail

Regular price $18.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/C10A/4.5kA

Other

Miniature Circuit Breaker

Wico Miniature Circuit Breaker 1P C10A 4.5 kA – Curve C, 230/400 V & DIN Rail

Regular price $4.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/C20A/4.5kA

Other

Miniature Circuit Breaker

Wico Miniature Circuit Breaker 1P C20A 4.5 kA – Curve C, 230/400 V & DIN Rail

Regular price $4.00
Sale price Regular price
Wico - Miniature circuit breaker 1P+N/C20A/4.5kA

Other

Miniature Circuit Breaker

Wico MCB 1P+N C20 A 4.5 kA DIN Rail – C-Curve, Switched Neutral & 230/400 V AC

Regular price $12.00
Sale price Regular price
Wico - Miniature circuit breaker 2P/D2X32A/6kA

Other

Miniature Circuit Breaker

Wico MCB 2P D32 A 6 kA DIN Rail – D-Curve, Two-Pole & 230/400 V AC

Regular price $12.00
Sale price Regular price
Wico - Miniature circuit breaker 1P+N/C16A/4.5kA

Other

Miniature Circuit Breaker

Wico MCB 1P+N C16 A 4.5 kA DIN Rail – C-Curve, Switched Neutral & 230/400 V AC

Regular price $8.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/D63A/4.5kA

Other

Miniature Circuit Breaker

Wico MCB 1P D63 A 4.5 kA DIN Rail – D-Curve, EN 60898-1 & 230/400 V AC

Regular price $4.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/D40A/4.5kA

Other

Miniature Circuit Breaker

Wico MCB 1P D40 A 4.5 kA DIN Rail – D-Curve, EN 60898-1 & 230/400 V AC

Regular price $4.00
Sale price Regular price
Wico - Miniature circuit breaker 1P/D32A/4.5kA

Other

Circuit Breaker

Wico Miniature Circuit Breaker 1P D32A – 4.5 kA, D-Curve & 35 mm DIN Rail

Regular price $4.00
Sale price Regular price

MCBs & Miniature Circuit Breakers for Panels

MCBs (miniature circuit breakers) protect circuits from overload and short circuit, and unlike a fuse they simply reset once the fault is cleared. A carefully selected range here helps you fit out a consumer unit or replace a tripping breaker without guesswork.

Pick the right current rating

The amp rating (such as 6A, 10A, 16A, 20A, 32A) must match the cable and load it protects. Lighting circuits typically use lower ratings, sockets higher ones. Never fit a larger breaker just to stop tripping; that removes the protection.

Understand the trip curve

Type B trips quickly and suits resistive and lighting loads, while Type C tolerates higher inrush from motors and many appliances. Choosing the correct curve avoids nuisance trips while keeping the circuit safe.

Combine with the right protection

For component-level protection see Glass & Cartridge Fuses, and for over-temperature safety look at Thermal Fuses & Cutoffs. The full Fuses & Electrical Protection range pulls it together. MCBs are also relevant for dedicated Computing circuits.

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