VAT:
Electrical4less Logo

Live Electrical CB140C 40A Curve C 10kA MCB

SKU: CB140C
19 in stock
More available within 1 - 2 working days *

The Live Electrical 40 Amp MCB provides 10kA breaking capacity and a 230-400V voltage rating. Designed for circuits with moderate inrush currents, it offers 20,000 electrical endurance cycles. Ideal for use with Live Electrical Consumer Units.

£ 2 .95 EX VAT
£ 3 .54 IN VAT
OR
SECURE PAYMENT
We use secure checkout for safe, encrypted payments.

Description

40A C Curve MCB Miniature Circuit Breaker – 10kA

Live Electrical CB140C Single Pole MCB

The Live Electrical 40 Amp Miniature Circuit Breaker (MCB) offers superior protection for circuits with moderate inrush currents, such as lighting systems and small motors. Featuring a 10,000A breaking capacity, this Type C MCB trips between 5 to 10 times the start-up current, ensuring reliable safety for your electrical systems.

With a voltage rating of 230-400V and an electrical endurance of 20,000 operations, it is ideal for both residential and commercial installations.

Thanks to its compact design (81mm x 17.5mm x 73mm), it integrates effortlessly into Live Electrical Consumer Units and Live Electrical TPN Three Phase Distribution Boards. By using this MCB in Live Electrical Consumer Units, you ensure compliance with BS7671 standards, enhancing both protection and performance for your installations.

Key Features:

  • Breaking capacity: 10kA
  • Voltage rating: 230-400V
  • Current rating: 40A
  • Electrical endurance: 20,000 operations
  • Compact dimensions: 81mm x 17.5mm x 73mm
  • Designed for use with Live Electrical Consumer Units

The Live Electrical 40A MCB is available now at Electrical4Less, part of a wide range of MCBs and RCBOs that deliver high performance and value for all project sizes.

For enhanced protection, pair this MCB with Live Electrical Consumer Units or Live Electrical SPD Consumer Units, ensuring full compliance with BS7671 standards.






Additional information

Curve

C

Fault Current

10kA

No of Poles

1P

Voltage

230V

Downloads

Delivery Information

Cut off time for Dispatch Delivery: Mon-Thu 3 PM *
Cut off time for Saturday Delivery: Friday 3 PM *
All orders placed on Sat/Sun will be dispatched on Monday.

Technical Support

Live Electrical Technical Support 0161 870 2592
© 2026 Electrical4less
We accept Visa We accept Mastercard We accept Maestro We accept PayPal We use Amazon Pay We use Apple Pay We use Google Pay