Wylex Miniature Circuit Breaker - NHXB20 - NHX - 20A

Name: Wylex Miniature Circuit Breaker - NHXB20 - NHX - 20A
Brand: Wylex
SKU: sjnbfqguxg
Price: 10.75 GBP
Availability: InStock

A Wylex Miniature Circuit Breaker (MCB) with a 20A rating and Type B curve. This is a single pole ...

Best current price£10.75from B&Q

Best offers

Shopping.co.uk recommended and popular offers

Lowest priceMost popular

B&Q£10.75Visit shop

B&Q - Nhxb20 Miniature Circuit Breaker (Mcb) Type B 20 Amp

Visit shop

One Offer

1 offer from £10.75

View price history by clicking the chart icon.

B&QB&Q - Nhxb20 Miniature Circuit Breaker (Mcb) Type B 20 Amp

Free delivery in 1–3 days

£10.75

Visit shop

Product Information

Full details

This guide is for anyone using the Wylex NHXB20 Miniature Circuit Breaker. It outlines the breaker's key features, how to use it, and how to troubleshoot common issues. The primary benefit is reliable circuit protection in your electrical system. However, proper installation and adherence to safety guidelines are crucial for optimal performance.

All features

Series	NHX
Model Part Number	NHXB20
Brand	Wylex

Extended Product Information

FAQs

What does '20A' mean?

The '20A' rating indicates the maximum continuous current the breaker can handle before tripping to protect the circuit.

What is a 'Type B' curve?

A Type B curve means the breaker trips relatively quickly in response to overloads and is suited for general-purpose applications.

Can I use this breaker for any circuit?

No. You must ensure the breaker's rating matches the circuit's needs. An electrician can help you determine the correct breaker for your application.

Where is the breaker installed?

The breaker is installed inside a consumer unit (also known as a fuse box or distribution board), typically mounted on a DIN rail.

What does 'SP' mean?

SP stands for Single Pole, meaning it protects only one conductor of the circuit.

How do I reset the breaker?

After a trip, move the breaker switch to the 'off' position, then back to the 'on' position.

What should I do if the breaker trips repeatedly?

The frequent tripping indicates an issue. You should consult a qualified electrician to inspect the circuit and identify the problem.

Troubleshooting

Breaker trips frequently.

Identify the cause of the overload or short circuit. Check connected devices for faults. Reduce the load on the circuit or replace the breaker with one of a higher rating if the circuit requires more current.

Breaker won't reset.

Ensure the circuit is clear of faults. If the breaker still won't reset, it may be faulty and need replacing. Consult a qualified electrician.

Pros and Cons

Pros

Provides essential overcurrent protection for electrical circuits.
Compact design saves space in consumer units.
Easy to install on DIN rails.
Suitable for a wide range of general-purpose applications.
Reliable performance from a trusted brand (Wylex).

Cons

Limited to a 20A current rating; not suitable for circuits requiring higher amperage.
Single-pole design only protects one conductor.
Requires professional electrical installation to ensure safety and compliance.
May require replacement if repeatedly subjected to overload conditions.

Setup, Compatibility & Care

Setup: The NHXB20 is designed for easy installation on a DIN rail within a consumer unit. Ensure the power is OFF before commencing any electrical work. Connect the circuit conductors to the terminals, ensuring correct polarity. Tighten the terminals securely.

Compatibility: This MCB is compatible with standard DIN rail systems and is designed to fit into most modern consumer units. Always check the specifications and ensure compatibility with your existing electrical setup.

Care: Regularly inspect the breaker for any signs of damage. Do not attempt to repair or modify the breaker. If the breaker trips frequently, investigate the cause and address the underlying issue before resetting the breaker. Ensure all electrical work is performed by a qualified electrician.