FuseBox MT06B401 40A Type B MCB

The FuseBox MT06B401 is a 40A Type B single-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits. Installed within consumer units or distribution boards, it automatically disconnects the circuit when excessive current is detected, helping protect wiring, appliances, and electrical installations.

Featuring a Type B tripping curve, this breaker is ideal for standard domestic and light commercial circuits such as socket outlets and general electrical loads where moderate inrush currents occur. With a 6 kA short-circuit breaking capacity, the device provides dependable protection for modern electrical systems.

The compact single-module design allows easy installation in FuseBox consumer units and other compatible DIN-rail distribution boards. Its thermal-magnetic trip mechanism ensures reliable operation, offering protection against both overload and short-circuit conditions.

Key Features

• 40A current rating

• Single-pole miniature circuit breaker (MCB)

• Type B tripping curve (3–5 × rated current)

• 6 kA short-circuit breaking capacity

• Thermal-magnetic trip mechanism for overload and short-circuit protection

• DIN rail mounting for consumer units and distribution boards

• 1-module compact design for space-saving installation

• Suitable for FuseBox consumer units and similar systems

Specifications

• Product Code: MT06B401

• Current Rating: 40A

• Number of Poles: 1 (Single Pole)

• Breaking Capacity: 6 kA

• Rated Voltage: 230 V

• Frequency: 50/60 Hz

• Terminal Capacity: up to 16 mm²

• Mounting Type: 35 mm DIN Rail

• Dimensions: approx. 83 × 17.6 × 69.6 mm

• Standards: IEC / EN 60898-1