The BMS312C40 miniature circuit breaker delivers reliable protection for 40 A circuits, ensuring safety and operational stability in residential and commercial applications. As part of the durable Basic M MCB series, it combines precise tripping performance with a space-saving design for modern distribution systems. Its versatility and easy DIN-rail mounting make it suitable for a wide range of low-voltage setups. For coordinated components and system-wide compatibility, explore our low voltage electrical products developed for efficient electrical protection and control.

Key Specifications – Miniature Circuit Breaker BMS312C40

• Rated Current (In): 40 A

• Protection Type: Overload and short-circuit

• Poles: 1P, 2P, 3P, or 4P configurations

• Tripping Characteristics: B, C, or D curve

• Standards: IEC/EN 60898-1 compliant

• Mounting: DIN rail modular housing

• Frequency: 50/60 Hz

Highlights

• Fast tripping for precise circuit protection

• Compact, modular structure for space efficiency

• Quick and secure DIN-rail installation

• High electrical endurance for long service life

• Designed for residential, commercial, and light industrial use

Typical Uses

• Residential and commercial distribution boards

• Lighting, socket, and small motor protection

• Control panels and auxiliary systems

• HVAC and automation sub-circuits

Installation & Support

Delivered factory-tested and ready for panel integration.

• Clear labeling for secure wiring and easy identification

• Technical documentation and after-sales support available upon request