Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
nm8s-1250s-4p-1250a chint 1250a 4p electronic adjustable thermal & magnetic mccb
Chint NM8S-1250S-4P-1250A 1250A 4 pole electronic moulded case circuit breaker with adjustable electronic trip unit for industrial and commercial low voltage power distribution.
£1,761.19
Why Choose the Chint NM8S-1250S-4P-1250A Electronic MCCB?
The Chint NM8S-1250S-4P-1250A is a high-performance electronic moulded case circuit breaker (MCCB) engineered to provide dependable overload and short-circuit protection for high-current low voltage electrical distribution systems. Featuring an advanced electronic trip unit, it offers precise protection adjustment and reliable fault interruption for demanding industrial and commercial installations.
As part of the Chint NM8S Series, this MCCB incorporates an adjustable electronic release that enables engineers to fine tune protection settings, improving selectivity and coordination across complex electrical systems. It is designed for use as a main incomer or feeder protection device within switchboards and power distribution assemblies.
With a 1250A rated current, 4-pole configuration and 50kA breaking capacity, the NM8S-1250S-4P-1250A is ideal for three-phase systems where neutral switching is required. It delivers dependable protection for industrial plants, commercial buildings, utilities and critical infrastructure.
Key Advantages
- 1250A rated current for high-capacity electrical distribution.
- 4-pole design suitable for three-phase systems with neutral switching.
- Adjustable electronic trip unit for accurate protection coordination.
- 50kA breaking capacity for dependable fault interruption.
- Suitable for industrial, commercial and infrastructure applications.
- Provides reliable overload and short-circuit protection for critical electrical equipment.
Key Features
- Chint NM8S Series electronic moulded case circuit breaker.
- 1250A rated current.
- 4-pole construction.
- Electronic adjustable protection.
- 50kA rated ultimate breaking capacity.
- Rated operational voltage up to 690V AC.
- Fixed mounting design.
- Manufactured in accordance with IEC/EN 60947-2.
Reliable Protection for High-Capacity Electrical Systems
The Chint NM8S-1250S-4P-1250A provides dependable protection by disconnecting electrical circuits during overload and short-circuit fault conditions. Its electronic protection system enables accurate adjustment of long-time and instantaneous protection settings, helping improve coordination across large electrical installations.
Its 4-pole configuration allows simultaneous switching of all three phases and the neutral conductor, making it suitable for installations where complete circuit isolation is required while maintaining reliable protection for high-current distribution systems.
Typical Applications
- Main incoming electrical supplies.
- Industrial switchboards.
- Commercial distribution boards.
- Large manufacturing facilities.
- Infrastructure and utilities.
- High-capacity feeder circuit protection.
Technical Specifications
Tick the specs you need, then view products that match.
| Trip Unit | LSI | |
|---|---|---|
| Mounting Type | Fixed | |
| Application | Power distribution | |
| Current | 1250 A | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 50 kA | |
| Manufacturer | Chint | |
| Series | NM8S Electronic MCCB | |
| Model | NM8S-1250S-4P-1250A | |
| Product type | Electronic moulded case circuit breaker | |
| Rated current | 1250A | |
| Frame size | 1250S | |
| 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 (Icu) | 50kA | |
| Frequency | 50 / 60Hz | |
| Mounting type | Fixed installation | |
| Standard | IEC/EN 60947-2 |
Frequently Asked Questions
What is the Chint NM8S-1250S-4P-1250A used for?
It provides overload and short-circuit protection for high-capacity industrial and commercial low voltage electrical distribution systems.
What is the rated current of this MCCB?
The NM8S-1250S-4P-1250A has a 1250A rated current.
What type of trip unit does this breaker use?
It incorporates an adjustable electronic trip unit that allows accurate protection settings and improved system coordination.
Why is this model supplied as a 4-pole MCCB?
The 4-pole design allows all three phases and the neutral conductor to be switched together, making it suitable for installations requiring complete circuit isolation.
Where is this MCCB typically installed?
It is commonly installed within industrial switchboards, commercial distribution boards, infrastructure projects and large electrical distribution systems.
Trusted by Electrical Professionals Worldwide
Chint NM8S electronic MCCBs are trusted by electrical engineers, panel builders and contractors for dependable high-current protection, adjustable electronic protection and reliable long-term performance in demanding low voltage power distribution systems.
