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-1000a chint 1000a 4p electronic adjustable thermal & magnetic mccb
Chint NM8S-1250S-4P-1000A 1000A 4 pole electronic moulded case circuit breaker with adjustable protection for industrial and commercial low voltage power distribution systems.
Why Choose the Chint NM8S-1250S-4P-1000A Electronic MCCB?
The Chint NM8S-1250S-4P-1000A is a high-capacity electronic moulded case circuit breaker (MCCB) designed to provide reliable overload and short-circuit protection for demanding low voltage power distribution systems. Built for industrial and large commercial applications, it offers dependable circuit protection where high current capacity, accurate fault detection and flexible adjustment are required.
As part of the Chint NM8S Series, this breaker features an adjustable electronic trip unit, allowing protection settings to be adapted for improved selectivity and system coordination. Its electronic protection design makes it suitable for main incomers, large feeder circuits, switchboards and critical electrical infrastructure.
With a 1000A rated current, 4-pole configuration and 50kA breaking capacity, the NM8S-1250S-4P-1000A is ideal for three-phase electrical systems where neutral switching is required. It provides reliable protection for industrial plants, commercial buildings, infrastructure projects and high-load distribution networks.
Key Advantages
- 1000A rated current for high-capacity power distribution.
- 4-pole MCCB suitable for three-phase systems with neutral switching.
- Adjustable electronic trip unit for flexible protection settings.
- 50kA breaking capacity for dependable short-circuit protection.
- Supports accurate protection coordination in large electrical systems.
- Suitable for industrial, commercial and infrastructure installations.
Key Features
- Chint NM8S Series electronic moulded case circuit breaker.
- 1000A rated current.
- 4-pole design.
- Adjustable electronic protection.
- 50kA rated breaking capacity.
- Suitable for low voltage AC power distribution.
- Fixed installation for switchboards and distribution panels.
- Designed for reliable protection in high-load applications.
High-Capacity Protection for Electrical Distribution
The Chint NM8S-1250S-4P-1000A provides dependable protection for large low voltage electrical systems by disconnecting circuits during overload and short-circuit fault conditions. Its adjustable electronic trip unit allows engineers to fine-tune protection settings, helping improve selectivity across complex distribution networks.
The 4-pole configuration makes this MCCB suitable for applications where the neutral conductor must be switched alongside the three phases, supporting safer isolation and enhanced protection in industrial and commercial electrical installations.
Typical Applications
- Main incoming electrical supplies.
- Industrial switchboards and distribution panels.
- Large commercial building electrical systems.
- High-capacity feeder circuit protection.
- Manufacturing and process facilities.
- Infrastructure, utilities and critical power systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Trip Unit | LSI | |
|---|---|---|
| Mounting Type | Fixed | |
| Application | Power distribution | |
| Current | 1000 A | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 50 kA | |
| Manufacturer | Chint | |
| Series | NM8S | |
| Model | NM8S-1250S-4P-1000A | |
| Product type | Electronic moulded case circuit breaker | |
| Rated current | 1000A | |
| Frame size | 1250S | |
| Number of poles | 4 Pole | |
| Trip unit | Adjustable electronic | |
| Breaking capacity | 50kA | |
| Rated operational voltage | Up to 690V AC | |
| Rated insulation voltage | 800V | |
| Rated impulse withstand voltage | 8kV | |
| Frequency | 50 / 60Hz | |
| Protection functions | Overload and short-circuit protection | |
| Mounting type | Fixed installation |
Frequently Asked Questions
What is the Chint NM8S-1250S-4P-1000A used for?
It is used to provide overload and short-circuit protection in high-capacity industrial and commercial low voltage electrical distribution systems.
What is the rated current of this MCCB?
The Chint NM8S-1250S-4P-1000A has a 1000A rated current.
How many poles does this breaker have?
This model has a 4-pole configuration, making it suitable for three-phase systems where neutral switching is required.
What type of trip unit does this MCCB use?
It uses an adjustable electronic trip unit, allowing flexible protection settings for improved system coordination.
Where is this breaker typically installed?
It is typically installed in main distribution boards, industrial switchboards, commercial distribution panels 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 high-current circuit protection, adjustable electronic protection settings and reliable performance in demanding low voltage installations.
