B40 MK 5940s 40A Single Pole MCB 40A MCB

This used MK 40A MCB is a 1 pole miniature circuit breaker with a 6kA breaking capacity. All our used, obsolete and discontinued MCBs are fully tested and guaranteed.

Looking for rare or hard-to-find MK circuit breakers? We stock thousands of obsolete and discontinued breakers. Same day dispatch on all orders before 3pm.

Product codes: B40 MK 5940s 40A Single Pole MCB, MK-5940s

The MK 5940s is a 40A single pole miniature circuit breaker (MCB) designed for electrical circuit protection. It features a short circuit breaking capacity of 6000A, ensuring reliable performance in preventing overloads and short circuits. This MCB is suitable for various residential and commercial applications.

All our items are tested, rcd based devices will have a full RCD test report included with the item.

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All products sent via Royal Mail. All items dispatched same working day if ordered before 3pm. See options if next day or faster postage required.