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nm8s-630s-4p-630a chint 630a 4p electronic adjustable thermal & magnetic mccb
Chint NM8S-630S-4P-630A 630A 4 pole electronic moulded case circuit breaker with adjustable electronic trip unit for industrial and commercial low voltage power distribution.
£909.45
Why Choose the Chint NM8S-630S-4P-630A Electronic MCCB?
The Chint NM8S-630S-4P-630A is a high-performance electronic moulded case circuit breaker (MCCB) engineered to provide dependable overload and short-circuit protection for low voltage electrical distribution systems. Designed for demanding industrial and commercial applications, it combines accurate electronic protection with robust construction for long-term reliability.
As part of the proven Chint NM8S Series, this MCCB incorporates an adjustable electronic trip unit, allowing protection settings to be tailored for improved selectivity and coordination across complex electrical installations. It is ideal for main incomers, distribution boards, feeder circuits and large power distribution systems.
With a 630A rated current, 4-pole configuration and 50kA breaking capacity, the NM8S-630S-4P-630A is perfectly suited to three-phase electrical systems requiring neutral switching. It delivers reliable protection for manufacturing plants, commercial buildings, infrastructure projects and critical power distribution applications.
Key Advantages
- 630A rated current for demanding power distribution applications.
- 4-pole configuration for three-phase systems with neutral switching.
- Adjustable electronic trip unit for accurate protection coordination.
- 50kA breaking capacity for dependable fault interruption.
- Supports improved selectivity across low voltage distribution networks.
- Designed for industrial, commercial and infrastructure electrical installations.
Key Features
- Chint NM8S Series electronic moulded case circuit breaker.
- 630A rated current.
- 4-pole design.
- Adjustable electronic protection.
- 50kA rated breaking capacity.
- Rated operational voltage up to 690V AC.
- Fixed mounting for switchboards and distribution panels.
- Manufactured in accordance with IEC/EN 60947-2.
Reliable Protection for Three-Phase Distribution Systems
The Chint NM8S-630S-4P-630A safeguards electrical systems by disconnecting circuits during overload and short-circuit fault conditions. Its electronic protection system enables engineers to optimise long-time and instantaneous protection settings, helping improve reliability and minimise unnecessary downtime.
The 4-pole design allows all three phases and the neutral conductor to be switched simultaneously, making it suitable for installations where complete circuit isolation and enhanced system protection are required.
Typical Applications
- Industrial switchboards.
- Main and sub-distribution boards.
- Commercial electrical installations.
- Manufacturing and processing facilities.
- Infrastructure and utilities.
- High-capacity feeder circuit protection.
Technical Specifications
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| Trip Unit | LSI | |
|---|---|---|
| Mounting Type | Fixed | |
| Application | Power distribution | |
| Current | 630 A | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 50 kA | |
| Manufacturer | Chint | |
| Series | NM8S Electronic MCCB | |
| Model | NM8S-630S-4P-630A | |
| Product type | Electronic moulded case circuit breaker | |
| Rated current | 630A | |
| Frame size | 630S | |
| Number of poles | 4 Pole | |
| Trip unit | Adjustable electronic release | |
| Rated operational voltage | Up to 690V AC | |
| Rated insulation voltage | 800V | |
| Rated impulse withstand voltage | 8kV | |
| Breaking capacity | 50kA | |
| Frequency | 50 / 60Hz | |
| Mounting type | Fixed installation | |
| Protection functions | Overload and short-circuit protection | |
| Standard | IEC/EN 60947-2 |
Frequently Asked Questions
What is the Chint NM8S-630S-4P-630A used for?
It provides overload and short-circuit protection for industrial and commercial low voltage electrical distribution systems.
What is the rated current of this MCCB?
The NM8S-630S-4P-630A has a 630A rated current.
Why does this breaker have four poles?
The 4-pole configuration allows all three phases and the neutral conductor to be switched together, providing complete isolation where required.
What type of trip unit does this MCCB use?
This breaker uses an adjustable electronic trip unit that provides accurate and flexible protection settings.
Where is this breaker typically installed?
It is commonly installed in industrial switchboards, commercial distribution panels, infrastructure projects and high-capacity feeder circuits.
Trusted by Electrical Professionals Worldwide
Chint NM8S electronic MCCBs are trusted by panel builders, contractors and electrical engineers for dependable circuit protection, adjustable electronic trip settings and reliable long-term performance in demanding low voltage power distribution systems.
