ARM3-125 Molded Case Circuit Breaker MCCB - High Performance Electrical Protection Device

The ARM3-125 Molded Case Circuit Breaker (MCCB) is a high-performance electrical protection device designed for industrial and commercial applications. This circuit breaker provides reliable protection against overloads, short circuits, and undervoltage conditions in AC 50Hz/60Hz circuits.

With its compact design and superior breaking capacity, the ARM3-125 MCCB is suitable for protecting electrical circuits and equipment in various installations. The breaker features four breaking capacity levels (C, L, M, H) to meet different application requirements, ranging from 35kA to 100kA ultimate short-circuit breaking capacity.

The ARM3-125 utilizes premium materials including heat-shrinkable insulation, high-silver content alloy contacts, and high-carbon steel mechanism components. Its thermosetting insulating material offers excellent arc resistance, insulation strength, and flame retardancy. The temperature-sensitive bimetal element ensures stable performance across a wide temperature range from -5°C to 55°C.

This MCCB can be installed in either vertical or horizontal orientation and features a modular accessory design for easy installation and maintenance. It complies with international standards IEC60947-2 and GB/T14048.2, ensuring reliable operation and safety.

Key features include:
- Multiple current ratings from 16A to 125A
- 3P/4P configurations available
- High mechanical life of 8,500 operations
- Electrical life of 1,500 operations
- Short arcing distance (<50mm)
- Compact and space-saving design