Live Electrical CB320D 3 Pole 20A D Curve 10kA MCB
The Live Electrical CB320D 3 Pole 20A D Curve 10kA MCB is a bi-directional miniature circuit breaker designed for three-phase AC electrical installations. Rated at 20A, this protective device combines a high-inrush D curve characteristic with a 10kA breaking capacity, making it suitable for selected commercial and industrial distribution applications.
Features and applications
The CB320D is designed for circuits where equipment can draw substantial current during start-up. Its D curve characteristic allows higher instantaneous currents before magnetic tripping than equivalent B or C curve breakers, making it an option for appropriately designed motor circuits, transformers and inductive equipment.
With three mechanically linked poles, the breaker provides simultaneous disconnection across three phases. Its compact 54mm housing occupies three standard DIN rail modules and is designed for installation in compatible distribution boards. The device operates at 230/400V AC and meets BS IEC/EN 60898 requirements.
Technical specifications -Live Electrical CB320D 3 Pole 20A D Curve 10kA MCB
- Manufacturer: Live Electrical
- Part number: CB320D
- Rated current: 20A
- Number of poles: 3
- Tripping characteristic: Curve D
- 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
Complete your three-phase distribution setup with our range of Live Electrical TPN distribution boards. Discover additional miniature circuit breakers and electrical installation products in the Live Electrical shop. Always verify compatibility and circuit protection requirements before installation.

