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10kA MCBs for High Fault-Level Circuits

10kA MCBs are miniature circuit breakers designed for circuits with higher prospective fault currents. They offer a higher breaking capacity than standard domestic breakers, making them suitable for commercial boards, industrial panels, three-phase supplies and installations close to the transformer where fault levels are elevated.

These MCBs provide reliable overcurrent and short-circuit protection with 10,000 A breaking capacity, ensuring safe operation in environments where higher fault energy is expected. They are available in a full range of current ratings and tripping curves, allowing installers to select the correct device based on circuit behaviour and load type.

  • 10kA breaking capacity for high fault-level environments
  • Available in B and C curves for domestic, commercial and industrial applications
  • Wide rating range including 6A, 10A, 16A, 32A and higher
  • Single-module DIN-rail format for easy installation
  • Stable disconnection under heavy short-circuit conditions

10kA MCBs are routinely specified in commercial distribution boards, three-phase supply setups, and circuits located near the incoming supply where prospective fault currents exceed the capabilities of standard 6kA breakers.

Showing 13 to 24 of 62 items
✓ In stock SKU: WKC463C

63A 4 Pole 10kA MCB C Curve – WKC463C

£15.05 ex VAT £18.06 inc VAT

The WKC463C is a 63A 4 pole 10kA Miniature Circuit Breaker (MCB) engineered for three-phase + neutral protection. With its C Curve trip characteristic,...

✓ In stock SKU: WKC440C

40A 4 Pole 10kA MCB C Curve – WKC440C

£15.05 ex VAT £18.06 inc VAT

The WKC440C is a 40A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral protection. With its C Curve trip profile,...

Out of stock SKU: WKC410C

10A 4 Pole 10kA MCB C Curve – WKC410C

£15.05 ex VAT £18.06 inc VAT

The WKC410C is a 10A 4 pole 10kA Miniature Circuit Breaker (MCB) designed for three-phase + neutral systems. With a C Curve trip characteristic,...

✓ In stock SKU: WKC150C

1 Pole 10kA MCB 50A C Curve WKC150C

£5.00 ex VAT £6.00 inc VAT

The WCED WKC Series 10kA Miniature Circuit Breakers (MCBs) are high-performance devices designed for precise overcurrent detection and short-circuit protection. Built to handle demanding...

✓ In stock SKU: WKC140B

1 Pole 10kA MCB 40A B Curve WKC140B

£5.00 ex VAT £6.00 inc VAT

The WCED WKC Series 10kA Miniature Circuit Breakers (MCBs) are high-performance devices designed for precise overcurrent detection and short-circuit protection. Built to handle demanding...

✓ In stock SKU: WKC132C

1 Pole 10kA MCB 32A C Curve WKC132C

£5.00 ex VAT £6.00 inc VAT

The WCED WKC Series 10kA Miniature Circuit Breakers (MCBs) are high-performance devices designed for precise overcurrent detection and short-circuit protection. Built to handle demanding...

✓ In stock SKU: WKC250C

50A 2 Pole 10kA MCB – C Curve (WKC250C)

£9.08 ex VAT £10.90 inc VAT

The WKC250C is a 50 A 2 Pole 10 kA Miniature Circuit Breaker (MCB) designed for high-demand single-phase or split-load circuits with moderate inrush...

✓ In stock SKU: WKC240B

40A 2 Pole 10kA MCB – B Curve (WKC240B)

£9.08 ex VAT £10.90 inc VAT

The WKC240B is a 40A 2 Pole 10kA Miniature Circuit Breaker (MCB) designed to protect higher-load radial and feeder circuits against short-circuit and overload...

Choosing a 10kA MCB

A 10kA MCB can interrupt a prospective short-circuit current up to its stated rated breaking capacity under the applicable product standard. That rating is separate from the device’s amp rating and trip curve, so all three must be selected from the installation design.

B Curve 10kA MCBs

Suitable for appropriate low-inrush circuits where the fault-loop conditions support a B curve characteristic.

View B Curve MCBs →

C Curve 10kA MCBs

Used on suitable circuits with greater starting current, provided prospective fault current and disconnection calculations support the higher instantaneous threshold.

View C Curve MCBs →

Single & Multi-Pole Formats

The range includes different pole arrangements for final circuits, distribution and three-phase systems. Confirm which conductors require protection or switching.

View 4-Pole MCBs →

Specification Checklist

  • Prospective fault current: verify the calculated or measured value at the installation point
  • Breaking capacity: select a device and assembly rated for that fault level
  • Current rating: coordinate with design current and conductor capacity
  • Trip curve: match normal inrush and required disconnection performance
  • Board compatibility: check product family, busbar, terminals and module dimensions

Related Categories

6kA MCBsB Curve MCBsC Curve MCBsHigh-Current MCBs10kA RCBOs

Trade support: UK-stocked products, manufacturer-backed specifications and fast dispatch. Check each product page for ratings, standards, stock status and delivery details before ordering.