DC Miniature circuit breaker
- Over 10 years of experience in manufacturing DC Miniature Circuit Breakers (MCB).
- Fast production delivery capability
- Provide product customization
- We provide 24-hour online service to you
Our products
Our compact DC circuit breakers integrate overload protection, short-circuit protection, and isolation functions, ensuring the stable operation and electrical safety of your DC power distribution system.
Application Scenarios of DC Miniature Circuit Breakers (MCB)

DC Miniature Circuit Breakers (MCB) are applied in Rail Transit
In rail transit, it resists vibration and tolerates a wide temperature range (-40℃~85℃), adapting to train jolts and extreme outdoor temps. With millisecond-fast response, it instantly cuts circuits if traction systems short-circuit, protecting train traction motors and passenger safety.

When used on ships, its core advantage is precisely meeting the ship DC system’s needs for harsh environment resistance, critical power protection and space saving. It solves unique circuit protection pain points during navigation, reliably safeguarding the ship’s low-voltage DC equipment and emergency systems.

DC Miniature Circuit Breakers (MCB) are used in Vessel
For EV charging stations, it’s the ideal choice that perfectly Our compact DC circuit breaker features instant fault response and space-saving installation. It completely eliminates hazards like overloading and short circuits during charging, ensuring every charging session is both efficient and worry-free!

DCMCB are applied in the New Energy
When used for charging piles, it precisely meets their core needs: high current tolerance, fast fault response and space-saving installation. It addresses hazards like overload/short circuit during charging, reliably protecting charging piles’ DC circuits and users’ equipment.

DC MCB are used in Felectric Vehicle
Our DC MCB the core requirements of the on-board DC system in electric vehicles, including robust safety protection, optimal space adaptability, and reliable performance under harsh environments. It ensures every journey stays completely free from electrical hazards

DC MCB are applied in Rail Transit
What is your application?
Frequently Asked Questions
What Is Aminiature DC Circuit Breaker?
How MCBs work?
The core function of a small DC circuit breaker is to monitor the circuit status via its internal sensitive components. When faults such as overload or short circuit occur, it quickly cuts off the circuit to provide protection.
Types of Miniature Circuit Breakers (MCB)
- Thermal-magnetic miniature DC circuit breakers
- Electronic miniature DC circuit breakers
- Selective miniature DC circuit breakers
- Application-specific miniature DC circuit breakers