Description
The Wylex MCB NSB Type B Single Pole 40Amp is a reliable miniature circuit breaker designed for domestic consumer units. It offers protection against overcurrents due to overload and fault currents, ensuring the safety of your electrical installations. With a robust design and easy installation, this MCB is ideal for household electrical systems.
Features & Benefits:
- Provides reliable protection against overcurrents due to overload and fault currents.
- Suitable for general domestic consumer unit use.
- Easy to install and interchangeable with existing Wylex NSB MCBs.
- Offers a short circuit breaking capacity of 6000A (M6).
- Can be used as a single pole isolating switch when necessary.
- Operating dolly can be locked in ON or OFF position without affecting the trip mechanism.
Applications:
- Domestic consumer unit installations
- Electrical circuit protection
Technical Data:
- Brand – Wylex
- Product Type – Miniature Circuit Breaker (MCB)
- Voltage – 230V
- Frequency – 50Hz
- Amperage – 40Amp
- IP Rating – IP20
- No. of Poles – 1
- Rated Insulation Voltage – 400V
- Rated Impulse Withstand Voltage – 4kV
- Short Circuit Breaking Capacity – 6000A
- Current Limiting Class – Class 3
- Ambient Temperature Range – -5°C To 40°C
- Connectable Conductor Cross Section – 0.75-25mm²
- Built-in Depth – 73mm
Standards & Certifications:
- BS EN 60898-1
- CE Conformity
- UKCA Conformity
- WEEE Symbol
Please Note:
- MCB designs may differ slightly on new purchases but are interchangeable.
Ensure the safety and efficiency of your electrical systems with the Wylex MCB NSB Type B Single Pole 40Amp. Order yours today to experience reliable circuit protection.






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