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nb1-63dc-4p-c40 chint 40a 4 pole c curve dc1000v (solar) type miniture circuit breaker
Chint NB1-63DC-4P-C40 40A four pole Type C DC miniature circuit breaker rated at 1000V DC with 6kA breaking capacity for solar PV, battery storage and DC distribution systems.
£27.12
Why Choose the Chint NB1-63DC-4P-C40 DC Miniature Circuit Breaker?
The Chint NB1-63DC-4P-C40 is a robust four pole Type C DC miniature circuit breaker (MCB) designed to provide dependable overload and short circuit protection for high-voltage direct current electrical systems. As part of the proven Chint NB1-63DC Series, it is ideal for photovoltaic installations, battery energy storage systems, telecommunications equipment and industrial DC power distribution.
Featuring a 40A current rating, Type C tripping characteristic and a 1000V DC rated voltage, the NB1-63DC-4P-C40 is suitable for protecting high-voltage DC circuits where safe isolation and reliable fault interruption are essential. Its compact DIN rail mounted design allows straightforward installation inside PV combiner boxes, DC switchboards, battery enclosures and industrial control panels.
Manufactured to IEC/EN 60947-2, this Chint DC circuit breaker helps protect cables, equipment and connected loads by automatically disconnecting the circuit during overload or short circuit conditions. Its durable modular construction and reliable switching mechanism make it a practical choice for renewable energy, telecoms and industrial DC applications.
Key Advantages
- 40A DC miniature circuit breaker for reliable DC circuit protection.
- Four pole Type C configuration for high-voltage DC installations.
- 1000V DC rated voltage suitable for photovoltaic and battery systems.
- 6kA breaking capacity for dependable fault interruption.
- Protects against overload and short circuit faults.
- Compact DIN rail mounting format for quick installation.
Key Features
- Chint NB1-63DC Series DC miniature circuit breaker.
- 40A rated current.
- Four pole (4P) configuration.
- Type C tripping characteristic.
- 1000V DC rated voltage.
- 6kA short circuit breaking capacity.
- Manufactured to IEC/EN 60947-2.
- Suitable for DIN rail installation in DC electrical enclosures.
Reliable Protection for High Voltage DC Systems
Direct current circuits require circuit breakers specifically designed to interrupt DC fault currents safely. The Chint NB1-63DC-4P-C40 provides reliable overload and short circuit protection while helping safeguard photovoltaic strings, battery circuits, DC distribution equipment and connected loads.
Its Type C characteristic is suitable for circuits with moderate inrush currents, while the four pole configuration supports safe isolation of high-voltage DC circuits in renewable energy, energy storage and industrial power applications.
Typical Applications
- Solar photovoltaic systems.
- PV combiner boxes.
- Battery energy storage systems.
- DC distribution boards.
- Telecommunications power supplies.
- Industrial DC control panels.
Technical Specifications
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| Voltage | 1000 V DC | |
|---|---|---|
| Current | 40 A | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCB | |
| Trip Curve | C curve | |
| Breaking Capacity | 6 kA | |
| Manufacturer | Chint | |
| Series | NB1-63DC | |
| Model | NB1-63DC-4P-C40 | |
| Product type | DC Miniature Circuit Breaker (MCB) | |
| Current rating | 40A | |
| Number of poles | 4 Pole | |
| Tripping curve | Type C | |
| Rated voltage | 1000V DC | |
| Breaking capacity | 6kA | |
| Standard | IEC/EN 60947-2 | |
| Mounting type | 35 mm DIN rail | |
| Protection rating | IP20 | |
| Applications | Solar PV, battery storage, telecoms and DC distribution |
Frequently Asked Questions
What is the Chint NB1-63DC-4P-C40 used for?
The NB1-63DC-4P-C40 protects high-voltage DC electrical circuits against overloads and short circuits in solar PV, battery storage, telecoms and industrial DC distribution systems.
What current rating does this DC MCB have?
This model has a 40A current rating.
What voltage is the NB1-63DC-4P-C40 rated for?
The four pole version is rated for 1000V DC.
What does the Type C tripping characteristic mean?
Type C circuit breakers trip between approximately 7 and 10 times their rated current, making them suitable for DC circuits with moderate inrush currents.
Where is this DC circuit breaker typically installed?
It is designed for DIN rail installation inside PV combiner boxes, DC distribution boards, battery enclosures and electrical control panels.
Trusted for DC Circuit Protection
Chint NB1-63DC miniature circuit breakers are trusted by solar installers, panel builders and electrical engineers for dependable overload and short circuit protection across modern high-voltage DC power systems.
