Why Choose the Chint NB1-63C4P20 Miniature Circuit Breaker?
The Chint NB1-63C4P20 is a compact and dependable miniature circuit breaker (MCB) designed to protect low voltage electrical circuits against overloads and short circuits. As part of the Chint NB1-63 series, it provides reliable circuit protection for residential, commercial and light industrial electrical installations.
This 4 pole C curve MCB features a 20 A rated current, making it suitable for three-phase and neutral circuits supplying lighting, control systems, instrumentation, socket outlets and lightly inductive loads. The C curve tripping characteristic is ideal for circuits with moderate inrush currents such as relays, contactors, small motors and transformers.
With a rated short-circuit breaking capacity of 6 kA and a standard 35 mm DIN rail mounting format, the NB1-63C4P20 is easy to install within distribution boards and electrical control panels. Its 4 pole design provides simultaneous isolation and protection across all three phases and neutral.
Key Advantages
- Compact 4 pole miniature circuit breaker.
- 20 A rated current for three-phase and neutral circuits.
- C curve trip characteristic for moderate inrush current loads.
- 6 kA short-circuit breaking capacity.
- Reliable overload and short-circuit protection.
- DIN rail installation in distribution boards and control panels.
Key Features
- Chint NB1-63 series MCB.
- 20 A rated current.
- C curve tripping characteristic.
- 4 pole configuration.
- 6 kA breaking capacity.
- 400 V AC rated voltage.
- 35 mm DIN rail mounting.
- Suitable for overload, short-circuit protection and circuit isolation.
Reliable Protection for Three-Phase and Neutral Mixed Load Circuits
Miniature circuit breakers such as the Chint NB1-63C4P20 automatically disconnect electrical circuits when overloads or short circuits occur. This helps protect wiring, connected equipment and electrical installations from excessive current and fault conditions.
The C curve characteristic trips between five and ten times the rated current, making it suitable for mixed resistive and inductive loads, lighting circuits, socket outlets, control circuits, relays, small motors and transformers with moderate inrush currents.
Typical Applications
- Three-phase and neutral distribution boards.
- Industrial control panels.
- Lighting and socket outlet circuits.
- Control and signalling circuits.
- Small motors, transformers and relays.
- Electrical installations requiring 20 A four pole protection.
