Best Type D Circuit Breakers of 2026

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 4 Feb 2026

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Type D circuit breakers are an essential component of any electrical system, providing protection against overloading and short circuits. These circuit breakers are designed to handle higher levels of current than their counterparts, making them ideal for use in industrial and commercial applications. They offer reliable performance and are available in a range of sizes to suit different requirements. Type D circuit breakers are a smart investment for anyone looking to ensure the safety and stability of their electrical system.

At a Glance: Our Top Picks

Square D 16 Amp Type B Circuit Breaker Cover #TOP 1
Square D 16 Amp Type B Circuit Breaker
ftb score rating icon 9.9
Merlin Gerin 32 Amp Type D MCB Cover #TOP 2
Merlin Gerin 32 Amp Type D MCB
ftb score rating icon 9.8
SCHNEIDER 20 AMP TYPE D MCB 10kA Cover #TOP 3
SCHNEIDER 20 AMP TYPE D MCB 10kA
ftb score rating icon 9.6

Top 7 Type D Circuit Breakers

#TOP 1

Square D 16 Amp Type B Circuit Breaker

Square D Qwikline QOE
BS EN 60898
Square D 16 Amp Type B Circuit Breaker Cover
SQUARE D 16 AMP TYPE B 6 KA MCB CIRCUIT BREAKER 220/240V QOE BS EN 60898

The Square D 16 Amp MCB is a reliable circuit breaker designed for various installations, including domestic, commercial, and industrial settings. It features a single pole design, allowing for easy integration into your electrical system. With a breaking capacity rated at 6k amps, it ensures robust protection against overloads. Additionally, its lockable ON or OFF position gives you the convenience of securing the breaker while maintaining its operational capability. This means you can rest assured knowing it will function effectively, even when locked in position.

What We Like
High breaking capacity
Lockable ON/OFF position
Easy installation
Suitable for various settings
#TOP 2

Merlin Gerin 32 Amp Type D MCB

Merlin Gerin 32 Amp Type D MCB Cover
MERLIN GERIN C60HD 32 AMP TYPE D 10KA 240V SINGLE POLE MCB CIRCUIT BREAKER 25704

The Merlin Gerin MCB is a robust 32 Amp Type D single pole circuit breaker designed for various applications, including domestic, commercial, and industrial use. With a 10kA breaking capacity, it ensures reliable protection against electrical faults, providing peace of mind for users. Its compliance with BSEN 60898: 1991 standards guarantees quality and safety. Additionally, the MCB can be locked in the ON or OFF position, allowing you to maintain control while ensuring it operates correctly, even when locked ON.

What We Like
High breaking capacity
Lockable ON/OFF position
Complies with safety standards
Suitable for various applications
#TOP 3

SCHNEIDER 20 AMP TYPE D MCB 10kA

SCHNEIDER 20 AMP TYPE D MCB 10kA Cover
SCHNEIDER 20 AMP TYPE D 10kA MCB CIRCUIT BREAKER C60HD 25702 MULTI9

The SCHNEIDER MCB 20 AMP is a reliable circuit breaker designed to protect your electrical system. With a capacity of 20 amps, it ensures that your devices receive the right amount of current, preventing overloads. The C60HD model provides excellent tripping characteristics, offering peace of mind in case of electrical faults. Its 10kA breaking capacity means it can handle high fault currents, ensuring safety and durability. This circuit breaker is a vital component for maintaining a safe electrical environment in your home or workplace.

What We Like
Reliable circuit protection
Prevents electrical overloads
Handles high fault currents
Easy installation
Durable design
#TOP 4

Square D 6 Amp Type B Circuit Breaker

Square D Qwikline
QO106EB6
Square D 6 Amp Type B Circuit Breaker Cover
SQUARE D 6 AMP TYPE B 6KA MCB CIRCUIT BREAKER SINGLE POLE 240V QOE QO106EB6

The Square D QO106EB6 is a reliable 6 Amp Type B single pole miniature circuit breaker (MCB) designed to protect your electrical circuits. With a breaking capacity of 6kA, it ensures safety against overloads and faults. You will appreciate the ability to lock the device in the ON or OFF position, providing added convenience and security. This MCB conforms to BSEN 60898: 1991 standards, making it suitable for domestic, commercial, and industrial applications. Its robust design ensures that your electrical systems remain protected at all times.

What We Like
High breaking capacity
Lockable ON/OFF position
Complies with safety standards
Versatile for various applications
#TOP 5

Square D 50 Amp Type B MCB Circuit Breaker

Square D 50 Amp Type B MCB Circuit Breaker Cover
Square D DOM50B6 - 50a Type B Single Pole MCB

The Square D 50 Amp MCB is designed to provide reliable protection for your electrical circuits. With a rated current of 50 Amps and a trip unit characteristic of Type B, it ensures safety by tripping at the right moments. It operates at a voltage of up to 240 V AC, making it versatile for various applications. The breaking current of 6 kA offers additional reassurance against overloads. You can also lock it in the ON or OFF position, providing you with peace of mind when performing maintenance or adjustments.

What We Like
High breaking current capacity
Lockable for safety
Suitable for domestic use
Complies with safety standards
#TOP 6

Merlin Gerin 16 Amp Type D Triple Pole MCB

Merlin Gerin 16 Amp Type D Triple Pole MCB Cover
MERLIN GERIN 16 AMP TYPE D 10 KA TRIPLE POLE MCB CIRCUIT BREAKER C60HD 25729 3

The Merlin Gerin C60HD MCB is a reliable circuit breaker designed to handle up to 16 amps at 240/415 volts AC, ensuring safe electrical operation in your commercial or industrial installation. Its Type D characteristic means it is suitable for circuits with high inrush currents, protecting your equipment effectively. With a 10kA breaking capacity, it can interrupt high fault currents, keeping your system secure. Additionally, this MCB can be locked in both ON and OFF positions, giving you added safety and control during maintenance or operation.

What We Like
High 16 Amp current rating
Suitable for high inrush currents
10kA breaking capacity
Lockable ON/OFF positions
#TOP 7

Square D 6A Type B Single Pole MCB

Square D Qwikline II
SQO106EB6
Square D 6A Type B Single Pole MCB Cover
Square D SQO106EB6 6A Type B SP MCB

The Square D 6A MCB is a reliable circuit breaker designed for safety and convenience. With a 6kA breaking capacity, it effectively protects your electrical circuits from overloads. The Type B rating ensures it is suitable for general applications, making it versatile for various uses. It can be locked in both ON and OFF positions, providing you with peace of mind as you can ensure safety during maintenance. Additionally, the prong type "plug on" busbar attachment simplifies installation, allowing you to set it up quickly and efficiently.

What We Like
High breaking capacity
Lockable ON/OFF position
Easy installation
Versatile for various applications
Buying Guide Image
Editor's Notes

During our type d circuit breaker research, we found 71 type d circuit breaker products and shortlisted 7 quality products. We collected and analyzed 3,076 customer reviews through our big data system to write the type d circuit breakers list. We found that most customers choose type d circuit breakers with an average price of £6.97.

The type d circuit breakers are available for purchase. We have researched hundreds of brands and picked the top brands of type d circuit breakers, including Square D Qwikline QOE, Schneider Electric, Square D Qwikline, Square D Qwikline II.

Written by
Jennifer Fraser Avatar

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.