DC 125A Mould Case Circuit Breaker

XENHO, a professional factory in China equips DC 125A Mould Case Circuit Breaker with three-stage protection (long-delay / short-delay / instantaneous), adjustable parameters, thermal-magnetic and electronic tripping optional, suitable for industrial and commercial DC power distribution.

What is MMCCB?

The Molded Case Circuit Breaker is a widely utilized switching device within low-voltage power distribution systems and motor protection circuits. It is a mechanical switching device in which all components are hermetically sealed within an insulating plastic housing; featuring a compact structure, it is generally designed to require no on-site maintenance. Primarily employed in low-voltage distribution systems with rated voltages of AC 1000V or DC 1500V and below, it serves as a branch circuit switch or motor protection switch, providing protection for power lines, cables, and electrical equipment.

Product Comparison

MCCB vs. MCB

Compared to Miniature Circuit Breakers (MCBs), MCCBs possess higher rated currents and breaking capacities; they are typically deployed in larger-capacity distribution branches, whereas MCBs are primarily used in final distribution circuits.

MCCB vs. ACB

Compared to Air Circuit Breakers (ACBs), ACBs offer the highest capacity and breaking capability; the MCCB occupies an intermediate position between the two in terms of capacity, functionality, and cost, offering greater flexibility in application.

Product Parameters

Stability During Long-Distance Transport

This DC 125A Mould Case Circuit Breaker features a high-strength, impact-resistant plastic housing. Its internal structure has been designed with anti-vibration reinforcement, and—combined with a customized shock-absorbing packaging solution—it effectively withstands the vibrations and impacts encountered during transportation.

Our DC 125A Mould Case Circuit Breaker has successfully passed the ISTA 3A transport testing certification. It maintains stable electrical performance under complex conditions—including fluctuations in temperature and humidity, as well as prolonged exposure to vibration and shock—thereby ensuring that it is ready for immediate, normal operation upon delivery.

Furthermore, it is certified to the international standard IEC 60947-2. It features a three-stage protection characteristic—comprising long-time delay, short-time delay, and instantaneous tripping—allowing for the flexible adjustment of current and time parameters based on specific load characteristics to achieve precise protection.

Protection Features

XENHO factory’s DC 125A Mould Case Circuit Breaker provides a comprehensive triple-protection scheme—including long-time delay for overload, short-time delay for short circuits, and instantaneous rapid tripping—effectively preventing line overheating, equipment damage, and the risk of electrical fires.

It features built-in, high-precision bimetallic thermal elements and magnetic tripping mechanisms, ensuring reliable operation in the event of sustained overcurrents or sudden short-circuit faults.

It supports the optional integration of electronic trip units, enabling more precise current setting and enhanced selectivity coordination within the protection system.

All protection parameters can be conveniently configured via front-panel rotary knobs or communication interfaces, allowing the device to adapt to various load types and power distribution requirements while ensuring the safe and stable operation of the system.

Loading and Shipping:

Leveraging our exceptional quality, we have established close and long-term business partnerships with clients from over 30 countries, receiving abundant positive feedback regarding our quality.

Contact us

For any inquiries about our products, please feel free to contact us through the following methods:

WhatsApp / WeChat: 86-13123865875 86-15858812131

Email: 799199031@qq.com