# 40 Amp Double Pole MCB Breaker for EV and Consumer Units

> Clean MotorCables product record generated from the Ashford/Luna product-evidence layer.

- Canonical URL: https://motorcables.co.uk/product/40a-mcb/
- Product ID: 1671
- SKU: 5061040453930
- Brand: Tomzn
- Categories: Breaker Switches, Breakers and RCBO, RCD Devices
- Price snapshot: £12.99
- Availability snapshot: instock
- Product modified: 2026-04-01T08:41:47Z

## Product-specific description

The 40 Amp Double Pole MCB Breaker for EVSE or Outbuildings is an essential component designed to enhance the safety and efficiency of your electric vehicle charging setup. This breaker is specifically engineered to protect circuits associated with EV chargers, ensuring reliable operation and peace of mind. What This Is For This MCB breaker is ideal for use in consumer units dedicated to EV charging circuits, particularly those powering a 7.2kw wallbox. It is suitable for various applications, including residential and commercial installations, ensuring that your electric vehicle charging system operates safely and effectively. Key Features 40A rating for robust circuit protection Operates at voltages up to 400V Double pole design cuts power to both live and neutral upon tripping Compatible with consumer units or mini consumer units for separate circuits Ideal for protecting 7.2kw single phase EV charging circuits with wallboxes that have their own RCD. Fits two bays of a standard consumer unit Easy DIN rail mounting for straightforward installation Includes live and neutral terminals for both input and output connections. Technical Specs Current Rating: 40A Voltage Rating: 230V up to 400V Type: Double Pole perfect for protecting outdoor equipment e.g. EV charge points EVSE Mounting: DIN Rail Application: EV Charger Consumer Unit This type of 40A double-pole MCB is a solid choice alongside an EVSE setup because it provides clean, reliable overcurrent protection with full isolation of both live and neutral. In EV charging applications, especially when you’re dealing with adapters or auxiliary power outputs, having a device that can safely disconnect the entire circuit in one action is a big plus for both safety and maintenance. The C-curve characteristic also makes it well-suited to handle the brief inrush currents you can get when equipment powers up, without nuisance tripping. When paired correctly with appropriate upstream protection (like an RCD where required), it adds a dependable layer of control and protection to an EVSE installation, keeping the supply stable while safeguarding cables and connected equipment. Compatibility & Safety Notes This MCB breaker is designed for use with EV charging circuits and should only be installed by qualified personnel. Ensure that the installation complies with local electrical regulations. Regular maintenance checks are recommended to ensure optimal performance and safety.

## Interpretation notes

- The engineering fields above are deliberately limited to unambiguous catalogue evidence.
- Do not infer missing phase, voltage, current, connector or compatibility facts.
- Price and availability can change; verify the canonical product page for a current purchase.