BG Circuit Protection B Curve MCB 20A CUMB20

BG Circuit Protection B Curve MCB 20A provides reliable overload and short-circuit protection for domestic and light commercial electrical installations. This single-pole miniature circuit breaker features Type B characteristics, responding quickly to fault conditions while tolerating brief inrush currents typical of resistive loads. Rated at 20 amperes with a 10kA breaking capacity, the CUMB20 is suitable for general-purpose circuits including lighting and standard power outlets. The compact design fits standard DIN rail enclosures, making installation straightforward in consumer units and distribution boards. Key features include thermal-magnetic trip mechanism for dual protection, easy on/off toggle operation, and compliance with BS EN 60898-1 standards. Ideal for upgrading or maintaining electrical safety in UK properties.

Orders with standard delivery are dispatched within 3-7 working days. Standard delivery is free on orders over £100 and costs £6.75 for orders under this amount.

For quicker delivery, select our express shipping option at checkout for £8.95. With express shipping, we aim to deliver within 1-3 working days, although delivery times are ultimately managed by the courier once your order has shipped.

Some items may be stored in external warehouses. If so, we’ll notify you and arrange for delivery to our store or directly to you.

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We strongly recommend arranging a qualified electrician to install any electrical items only after your order has been delivered. PU Electrical Wholesaler is not liable for any electrician fees incurred due to unexpected delivery delays.