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nm8-250s-4p-250a chint 250a 4p adjustable thermal & magnetic mccb
Chint NM8-250S-4P-250A 250A 4 pole thermal-magnetic moulded case circuit breaker with 50 kA breaking capacity for industrial and commercial power distribution.
Why Choose the Chint NM8-250S-4P-250A Moulded Case Circuit Breaker?
The Chint NM8-250S-4P-250A is a robust 4 pole moulded case circuit breaker (MCCB) designed to provide dependable overload and short-circuit protection for industrial, commercial and power distribution applications. As part of the proven Chint NM8 Series, it combines reliable protection performance with safe switching and isolation for demanding low-voltage installations.
Featuring a thermal-magnetic trip unit, the NM8-250S delivers dependable circuit protection against overload and fault conditions. Its compact moulded case design, durable construction and high interrupting capacity make it suitable for protecting switchboards, machinery, distribution panels and industrial control systems.
With a 250 A rated current, 4 pole configuration and a 50 kA breaking capacity, the NM8-250S-4P-250A is ideal for three-phase electrical systems requiring reliable protection, safe isolation and long service life.
Key Advantages
- Industrial-grade 4 pole moulded case circuit breaker.
- 250 A rated current for heavy-duty power distribution.
- Thermal-magnetic protection for overload and short-circuit faults.
- 50 kA short-circuit breaking capacity for enhanced system protection.
- Suitable for switching, isolation and circuit protection.
- Designed for reliable operation in demanding electrical environments.
Key Features
- Chint NM8 Series MCCB.
- 250 A rated current.
- 4 pole configuration.
- Thermal-magnetic trip unit.
- 50 kA rated breaking capacity.
- Rated operational voltage up to 690 V AC.
- Suitable for isolation in accordance with IEC requirements.
- Fixed mounting for distribution boards and switchgear assemblies.
Reliable Circuit Protection for Industrial Installations
The Chint NM8 Series is engineered to protect low-voltage electrical systems against overloads and short circuits while providing dependable switching and safe isolation. Its durable moulded case design helps support long-term performance in demanding industrial and commercial environments.
Suitable for manufacturing facilities, commercial buildings, infrastructure projects and electrical distribution systems, the NM8-250S provides reliable protection where equipment safety and operational continuity are essential.
Typical Applications
- Main incoming distribution boards.
- Industrial switchgear assemblies.
- Motor control centres.
- Commercial electrical installations.
- Manufacturing and process machinery.
- Power distribution infrastructure.
Technical Specifications
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| Mounting Type | Fixed | |
|---|---|---|
| Application | Power distribution | |
| Current | 250 A | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 50 kA | |
| Trip Unit | Thermal-magnetic | |
| Manufacturer | Chint | |
| Series | NM8 | |
| Model | NM8-250S-4P-250A | |
| Product type | Moulded Case Circuit Breaker (MCCB) | |
| Rated current | 250 A | |
| Number of poles | 4 | |
| Trip unit | Thermal-magnetic | |
| Rated operational voltage | Up to 690 V AC | |
| Rated insulation voltage (Ui) | 800 V | |
| Rated impulse withstand voltage (Uimp) | 8 kV | |
| Breaking capacity | 50 kA | |
| Rated frequency | 50 / 60 Hz | |
| Standard | IEC/EN 60947-2 | |
| Mounting type | Fixed | |
| Frame size | NM8-250S |
Frequently Asked Questions
What is the Chint NM8-250S-4P-250A used for?
It protects electrical circuits against overloads and short circuits while providing safe isolation in commercial and industrial power distribution systems.
What is the rated current of this MCCB?
The breaker has a rated current of 250 A.
How many poles does this circuit breaker have?
This model features a 4 pole design, making it suitable for three-phase systems with a neutral conductor.
What type of protection does this breaker provide?
It uses a thermal-magnetic trip unit to provide protection against overload and short-circuit conditions.
Which standards does the NM8-250S comply with?
The NM8 Series is manufactured in accordance with IEC/EN 60947-2 for low-voltage moulded case circuit breakers.
Trusted by Electrical Professionals Worldwide
Chint NM8 moulded case circuit breakers are trusted by electrical contractors, panel builders and industrial engineers for reliable protection of low-voltage power distribution systems.
