FuseBox MT06B631 63A Type B MCB

The FuseBox MT06B631 is a 63A Type B single-pole miniature circuit breaker (MCB) designed to protect electrical circuits from overloads and short circuits in consumer units and distribution boards. When excessive current is detected, the breaker automatically disconnects the circuit, helping to safeguard electrical wiring and connected equipment.

Featuring a Type B tripping curve, this breaker is suitable for domestic and light commercial installations where moderate inrush currents occur. With a 6 kA short-circuit breaking capacity, the device provides dependable protection for modern electrical systems and complies with recognised safety standards.

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

Key Features

• 63A 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

• Compact 1-module design for space-saving installation

• Suitable for FuseBox consumer units and compatible distribution boards

Specifications

• Product Code: MT06B631

• Current Rating: 63A

• Number of Poles: 1 (Single Pole)

• Breaking Capacity: 6 kA

• Rated Voltage: 230 V

• Frequency: 50/60 Hz

• Tripping Curve: Type B

• 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