Why Choose the Chint NB1-63DH4P25 Miniature Circuit Breaker?
The Chint NB1-63DH4P25 is a reliable 4 pole miniature circuit breaker (MCB) designed to provide overload and short-circuit protection in low-voltage electrical distribution systems. As part of the trusted Chint NB1 Series, this device is suitable for commercial, industrial and control panel applications where dependable circuit protection and safe isolation are required.
With a 25 A rated current, D curve tripping characteristic and 10 kA breaking capacity, the NB1-63DH4P25 is ideal for circuits with high inrush currents, such as transformer circuits, motor loads, discharge lighting and inductive equipment. Its four-pole format allows simultaneous switching and protection across three-phase circuits with neutral.
The compact DIN rail mounted design enables straightforward installation inside distribution boards, machine panels and electrical enclosures. Built for long-term performance, the Chint NB1-63DH4P25 helps protect electrical systems while supporting safe maintenance and reliable circuit isolation.
Key Advantages
- Compact 4 pole miniature circuit breaker for three-phase installations.
- 25 A rated current for low-voltage distribution circuits.
- D curve characteristic suitable for high inrush current applications.
- 10 kA breaking capacity for enhanced short-circuit protection.
- Provides overload protection, short-circuit protection, switching and isolation.
- DIN rail mounting for fast installation in panels and distribution boards.
Key Features
- Chint NB1 Series miniature circuit breaker.
- 4 pole configuration.
- 25 A rated current.
- D curve tripping characteristic.
- 10 kA rated breaking capacity.
- Designed for AC 50 / 60 Hz low-voltage circuits.
- DIN rail mounting for distribution boards and control panels.
- Suitable for circuit protection, switching and safe isolation.
Reliable Circuit Protection for Electrical Distribution
Miniature circuit breakers such as the Chint NB1-63DH4P25 automatically disconnect electrical circuits when overload or short-circuit faults occur. This helps protect cables, equipment and connected machinery from damage caused by excessive current.
The D curve characteristic is designed for applications where higher starting currents are expected. This makes the MCB suitable for transformer-fed circuits, motor circuits and other inductive loads where a standard B or C curve device may nuisance trip.
Typical Applications
- Three-phase electrical distribution boards.
- Industrial control panels and machinery circuits.
- Transformer and inductive load circuits.
- Motor control and automation systems.
- Commercial electrical installations.
- Low-voltage power distribution systems.
