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CHINT Shield NB1-63BH1P40 1-Pole 40A 10kA B-Curve MCB

£5.62
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Ensure reliable electrical safety in your consumer unit or distribution board with the CHINT Shield NB1-63BH1P40 Miniature Circuit Breaker (MCB). Engineered for high-performance circuit protection, this single-pole 40A MCB features a 10kA breaking capacity and a B-type tripping curve to safeguard electrical installations against overloads and short circuits.

High 10kA Fault Protection: Features a robust 10kA breaking capacity to safely interrupt severe short-circuit faults. Fast-Acting B-Curve Response: Designed with a B tripping curve for rapid response to overcurrent conditions in standard domestic and commercial circuits. Substantial 40A Rating: Supplies a 40A nominal current capacity for powering higher-load circuits and sub-distribution feeds. Single-Pole Space Saver: Standard 1-pole modular design allows clean, space-efficient mounting inside consumer units. Trusted CHINT Shield Reliability: Part of the CHINT Shield NB1 series, delivering certified quality and dependable circuit protection.
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UK-wide delivery Free tracked delivery on orders over £250.

Next-day delivery UK-wide option at checkout. Delivery times apply from dispatch.

SKU: NB1-63BH1P40
Product Details
Upgrade your electrical installation with the professional-grade CHINT Shield NB1-63BH1P40 1-Pole MCB. Designed for integration into modern domestic and commercial consumer units, this 40A miniature circuit breaker provides vital protection for final sub-circuits.
Heavy-Duty 10kA Breaking Capacity
Built for demanding power protection, the NB1-63H series features a high 10kA short-circuit breaking capacity. This ensures robust protection against high fault currents, helping prevent damage to sensitive wiring, appliances, and distribution infrastructure during electrical fault events.
Responsive B-Curve Protection
Featuring a B-curve tripping profile, the NB1-63BH1P40 is calibrated to trip instantly between 3 to 5 times its nominal 40A rated current. This fast-acting response is ideal for domestic and light commercial applications where inrush currents are minimal, providing maximum protection for cables and connected equipment.
Compact Single-Pole Form Factor
Designed as a standard single-pole (1P) module, this circuit breaker fits seamlessly into compatible CHINT Shield consumer units and power distribution boards. Its standardized DIN-rail modular design makes installation, circuit identification, and maintenance straightforward for qualified electricians and contractors.
Shipping & Collection

Tracked Delivery (Currently 1-3 business days):

  • Free over £250.
  • £4.99 for small packages (Under 0.8kg)
  • £5.99 for orders under £250.
  • £5.99 for orders under £50.

Next Business Day Delivery:

  • £9.99 Flat Rate.

Collection:

  • Free to collect from our warehouse.

Pre-Order:

  • 5-10 Business Days delivery unless otherwise stated.

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As a leading UK Victron Distributor and the Official UK Pytes Distributor our in house engineering team can deliver bespoke solutions. We handle design, specification, and system optimisation to meet your specific needs, regardless of size, weight, environmental, or regulatory constraints. From DIY projects up to large scale commercial projects our team can do it all.

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