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Wylex MCB 50A SP Type B

4.8 (103 reviews)
SKU: 260223155530226 EAN: 5013601081915

Compare 1 price for Wylex MCB 50A SP Type B — from £3.99 across 1 UK seller including Toolstation.

£3.99 24h ago
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This Wylex MCB provides essential protection against short circuits and overloads in domestic and commercial installations. It features a Type B tripping curve, making it ideal for standard lighting and power circuits with low inrush currents. The compact single-pole design ensures easy DIN rail mounting within compatible Wylex NH series consumer units.
Application Power Management, Commercial, Domestic
Box Shape Rectangular
Brand Wylex
Breaking Capacity 6kA
Colour Grey
Control Style Toggle
Country/Region of Manufacture United Kingdom
Current Rating 50 A
Current Type AC
Features Trip Indicator, DIN Rail Mount, Compact Design
Finish Matt
Fuse Type MCB
Interruption Type Thermal Magnetic
Material Plastic, Metal
Maximum Amperage 50 A
Model NHB
Mounting Style DIN Rail Mount
MPN NHB50
Number of Gangs 1
Number of Outlets 1
Number of Poles 1-Pole
Number of Ports 1
Number of Switches 1
Number of Throws 1-Way
Operation Method Toggle Switch
Plug Type Fixed
Pole Configuration Single Pole
Port Type Screw Terminal
Smart Home Compatibility Not Compatible
Smart Home Protocol Not Applicable
Suitable For Interior, Consumer Unit
Tripping Curve Type B
Type Miniature Circuit Breaker (MCB)
Unit Quantity 1
Unit Type Unit
Voltage 230 V
50A current rating for high-load domestic circuits
Type B tripping characteristic for standard protection
6kA breaking capacity for reliable fault interruption
Compatible with Wylex NH range consumer units
1 x Wylex 50A Single Pole Type B MCB

Customer Reviews 103

4.8
103 reviews
5 star
90
4 star
10
3 star
2
2 star
1
1 star
0
Replacement Wylex 40A MCB
5.0
March 1, 2026
Mark I Verified Purchase

Bought to replace a burnt out MCB on our shower circuit. Although the design was slightly different to the old one, it fitted into the consumer unit without problems. The clamps for the busbar and the live feeder cable have been improved as well. Good value, recommended.

Good product perfect replacement
5.0
February 27, 2026
Ayoobies Verified Purchase

Works perfectly, this is the correct part i needed for my unit plug and play be careful when working with electrics my old one was burnt out

Wylex 32A MCB Mini Braker
5.0
February 24, 2026
487cce1d-ed05-5d08-8452-6ef2d047019f Verified Purchase

Exellent, very pleased that the item was in stock after checking online.

Upgade my electrics.
5.0
February 24, 2026
0df5239f-8ce1-5f0d-a737-904007b801e8 Verified Purchase

Wylex MCB 32A to allow a kitchen update, found on Toolstation, where else!

Wylex to the rescue!
5.0
February 23, 2026
Juan_hu_nose Verified Purchase

This review is a follow-up to my recent review of the MK 45A DP upright isolator that I fitted as a replacement for a heat-damaged unbranded type.

The reason for buying this Wylex MCB was because the idiot who had installed the shower originally, hadn't bothered to include any over-current protection whatsoever! The shower isolator was fed directly from the DP switch disconnector of a Wylex all-insulated 2-way consumer unit, connected via service connectors to the meter tails! The only over-current 'protection' present was the 60A service fuse!

To make matters even worse, a 2.5mm T&E cable was also connected in parallel with the 6.0mm shower cable, the cpc of which was loose in the earth bar! How a fire hadn't occurred is beyond me!

Fortunately, the MCB fiited fine but I still had to buy a suitable busbar (from Toolstation) as the original too, was missing!

I've used Wylex accessories all of my life and with very few exceptions, have found them to be totally reliable pieces of kit. This particular example represents great value-for-money from Toolstation.

Replacement MCB - Wylex 20A Type B
4.0
February 21, 2026
1ee96e47-3180-5239-a2aa-eda5b509a867 Verified Purchase

Bought to replace a failed MCB. Slightly different design to the original, but the new one slotted in quite easily and is working well. Good value.

Wylex Mcb
5.0
January 27, 2026
f8078b20-e8b6-52c0-8841-76d45e9f53a4 Verified Purchase

Works welllllllllllllllllllllllllllllllllllllllllll

Good breaker
5.0
January 18, 2026
Chris FF Verified Purchase

A cheap and cheerful breaker. No fuss and worked just fine.

Wylex mcb
5.0
December 30, 2025
RJ66 Verified Purchase

Wylex mcbs do exactly what they say there going to do

MCB
5.0
October 17, 2025
Nick Hagen Verified Purchase

Needed a few extra circuits the house. Excellent quality product

Great store, staff and goods
5.0
October 10, 2025
COBRA2025 Verified Purchase

Excellent, good quality item, fitted in less than 10 mins, fully tested and certificated. Another great buy from toolstation. Always a pleasure to visit my local store, always clean and tidy. The staff are pleasant, smart in appearance as well as being knowledgeable.

Addition to existing consumer unit
5.0
October 9, 2025
Trevorxxxx Verified Purchase

Already have 10 way Wylex Unit replaced smaller mcb due to alteration of circuit

Replacement was easy to fit.
5.0
October 2, 2025
inadee Verified Purchase

Good replacement at reasonable price. Pefect replacement.

Wylex MCB
4.0
September 9, 2025
Stuart J4 Verified Purchase

Worked as intended and fitted ok. Slightly different dimensions to its predecessor but still fitted

Just the job
5.0
June 7, 2025
68e76350-3336-5da2-b77c-8da3dcdb6683 Verified Purchase

Just what i needed to complete the the job. Ordered and in stock

Wylex 20 amp mcb
5.0
May 25, 2025
Walter H Verified Purchase

We ordered this in error so did not us it, looked to be of decent quality.

Perfect for the radial circuit
5.0
May 24, 2025
Winsfordian Verified Purchase

Down rated a 20A circuit to meet regulations this 16A MCB was perfect for that

Wylex MCB 32a sp type B
5.0
May 6, 2025
Nick King Verified Purchase

Excellent value and perfect for the job .Fitted the slots in the consumer unit perfectly

Good
5.0
January 2, 2025
yeovil Verified Purchase

Easy to pick up when ordered on line well done tool station keep it ip

Rcd breaker
5.0
January 1, 2025
Lunar voyage 17 Verified Purchase

Bought this to fit an existing fuse board as didn’t want to add a new board

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