Skip to content

Best MK Circuit Breakers of 2026

Jennifer Fraser Avatar
Jennifer Fraser

Last Updated:

Save
Share

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

MK Circuit Breakers are a reliable and efficient option for protecting electrical circuits from overloads and short circuits. These circuit breakers are designed to automatically interrupt the flow of electricity when a fault is detected, preventing damage to appliances and reducing the risk of electrical fires. With their durable construction and easy installation, MK Circuit Breakers are a recommended choice for both residential and commercial applications.

At a Glance: Our Top Picks

Top 6 MK Circuit Breakers

MK Electric Sentry 16A Single Pole MCB

  • MK
  • 5916S
  • White
MK Electric Sentry 16A Single Pole MCB Cover

MK Electric Sentry 16A Single Pole Type B MCB

The MK Electric Sentry MCB is a thermo-magnetic miniature circuit breaker designed to ensure safety in your electrical installations. It detects overcurrents effectively, which helps prevent damage to your home’s electrical system. Additionally, the device can operate and interrupt the supply, providing peace of mind and reliability. With tunnel terminals of 35mm² capacity, you can connect your wiring easily and securely. The ability to lock the operating dolly in the On or Off position adds convenience, allowing you to maintain control without compromising the trip mechanism.

9.9
FTB Score

What We Like

  • Reliable overcurrent detection
  • Prevents electrical damage
  • Easy wiring connections
  • Convenient locking mechanism
#TOP 2

MK 6 AMP Type 2 M6 Circuit Breaker 240V

  • MK
  • LN 5906
MK 6 AMP Type 2 M6 Circuit Breaker 240V Cover

MK 6 AMP TYPE 2 M6 MCB CIRCUIT BREAKER 240V LN 5906 BS 3871

The MK 6 AMP Circuit Breaker is designed for effective electrical protection in your home or office. With a 6 Amp rating, it ensures that circuits are safeguarded against overloads, providing peace of mind. Being a Type 2 breaker, it is ideal for use in various applications, offering versatility. The M6 specification allows for easy installation in standard setups, making it convenient for you to enhance your electrical safety with minimal effort.

9.8
FTB Score

What We Like

  • Effective electrical protection
  • Versatile for various applications
  • Easy installation
  • Compact design
#TOP 3

MK Electric Sentry 40A Type B MCB

  • MK
  • 5940S
  • White
MK Electric Sentry 40A Type B MCB Cover

MK Electric Sentry 40A Single Pole Type B MCB

The MK Sentry 40A MCB is a reliable miniature circuit breaker designed to protect your electrical installations. Its thermo-magnetic operation detects overcurrents, preventing potential damage to your systems. You will appreciate the convenience of the tunnel terminals, which accommodate 35mm² capacity for all ratings, simplifying your installation process. Additionally, the operating dolly can be locked in either the On or Off position, ensuring that you can maintain control without compromising the trip mechanism's functionality.

9.6
FTB Score

What We Like

  • Detects overcurrents effectively
  • Prevents installation damage
  • Easy installation with tunnel terminals
  • Lockable operating dolly
#TOP 4

MK 16A Type 2 Single Pole MCB

  • MK
  • LN 5916
  • 16 amps
MK 16A Type 2 Single Pole MCB Cover

MK 16 AMP TYPE 2 M6 LN 5916 MCB Circuit Breaker SINGLE POLE

The MK 16A MCB is a reliable circuit breaker designed to enhance your electrical safety. With its Type 2 tripping curve, it ensures that your circuits are protected from overloads and short circuits. The device conforms to BS 3871: Pt1: 1965 standards, providing you with peace of mind. Its 6 kA breaking capacity ensures that it can handle significant fault currents, helping to prevent damage to your electrical system. Finally, being DIN rail mounted allows for easy installation and organisation within your electrical setup.

9.5
FTB Score

What We Like

  • Reliable overload protection
  • Standard compliance for safety
  • Easy to install
  • High breaking capacity
#TOP 5

MK Sentry 10A Single Pole Circuit Breaker

  • MK
  • 5910S
  • White
MK Sentry 10A Single Pole Circuit Breaker Cover

MK (ELECTRIC) Sentry 10A Single Pole Type B MCB, White

The MK Sentry 10A MCB is a reliable solution for protecting your electrical installation. It features a thermo-magnetic design that detects overcurrents, ensuring that your system is safeguarded from potential damage. By automatically interrupting the supply when necessary, it helps maintain the safety of your appliances. The product also includes tunnel terminals capable of accommodating 35mm² wiring, making installation straightforward. Additionally, the operating dolly can be locked in either position, offering you flexibility without compromising safety.

9.5
FTB Score

What We Like

  • Reliable overcurrent protection
  • Easy installation with large terminals
  • Flexible operation with locking dolly
#TOP 6

MK Electric Sentry 10A Single Pole Type C MCB

MK Electric Sentry 10A Single Pole Type C MCB Cover

MK Electric Sentry 10A Single Pole Type C MCB

The MK Electric Sentry MCB is a 10A single pole miniature circuit breaker designed with thermos magnetic technology. This means it uses thermal and magnetic elements to detect overcurrent, helping to protect your electrical installation from damage. It operates by interrupting the power supply when necessary, ensuring safety and preventing faults. Additionally, it features tunnel terminals with a 35mm² capacity, allowing for easy and secure wiring connections, making installation and maintenance more convenient for you.

9.5
FTB Score

What We Like

  • Efficient overcurrent detection
  • Protects electrical installations
  • Easy wiring with tunnel terminals
  • Secure switch locking feature

Editor's Notes

During our MK circuit breaker research, we found 30 MK circuit breaker products and shortlisted 6 quality products. We collected and analyzed 4,145 customer reviews through our big data system to write the MK circuit breakers list. We found that most customers choose MK circuit breakers with an average price of £13.18.

The MK circuit breakers are available for purchase. The top 6 picks range in price from a low of £4.00 to a high of £21.00, find the one that fits your budget.

Written by

Jennifer Fraser Avatar

Jennifer Fraser

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.