Live Electrical CB363B 3 Pole 63A B Curve 10kA MCB
The Live Electrical CB363B 3 Pole 63A B Curve 10kA MCB is a bi-directional miniature circuit breaker designed for three-phase AC distribution systems. Featuring a 63A current rating, B curve tripping characteristic and 10kA breaking capacity, it provides overload and short-circuit protection for suitable commercial and industrial circuits.
Features and applications
The CB363B incorporates a B curve thermal-magnetic tripping characteristic, generally suited to electrical circuits with low starting currents. The magnetic trip operates at approximately three to five times the rated current, making this breaker suitable for appropriately designed resistive loads and other applications where high inrush current tolerance is unnecessary.
This three-pole MCB provides linked switching across all three phases and occupies three standard 18mm DIN rail modules. Its 54mm-wide design allows installation within compatible distribution equipment, while the 230/400V AC operational rating and IP20 protection meet the requirements of suitable low-voltage installations.
Before installation, verify the circuit’s cable capacity, prospective fault current, protective device coordination and required disconnection times.
Technical specifications – Live Electrical CB363B 3 Pole 63A B Curve 10kA MCB
- Manufacturer: Live Electrical
- Part number: CB363B
- Rated current: 63A
- Number of poles: 3
- Tripping characteristic: Curve B
- Rated breaking capacity: 10kA
- Rated operational voltage: 230/400V AC
- Rated frequency: 50/60Hz
- Standard: BS IEC/EN 60898
- Ingress protection: IP20
- Mounting: 35mm DIN rail
- Width: 54mm
- Maximum cable terminal capacity: 16mm²
Explore Live Electrical distribution equipment
Find suitable three-phase distribution equipment in our Live Electrical TPN distribution boards category. For more circuit protection devices and electrical installation products, explore our Live Electrical range.

