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nm8s-1250s-3p-1250a chint 1250a 3p electronic adjustable thermal & magnetic mccb
Chint NM8S-1250S-3P-1250A 1250A 3 pole electronic moulded case circuit breaker with adjustable electronic trip unit for industrial and commercial power distribution.
£1,430.28
Why Choose the Chint NM8S-1250S-3P-1250A Electronic MCCB?
The Chint NM8S-1250S-3P-1250A is a heavy-duty electronic moulded case circuit breaker (MCCB) designed to provide dependable overload and short-circuit protection for high-current low voltage power distribution systems. Featuring an advanced electronic trip unit, it delivers precise protection settings and excellent coordination for demanding industrial and commercial installations.
As part of the Chint NM8S Electronic MCCB Series, this breaker is engineered for large switchboards, main incomers and feeder circuits where accurate protection and long-term operational reliability are essential. The electronic release enables flexible adjustment of protection parameters, helping improve selectivity and minimise unnecessary downtime.
With a 1250A rated current, 3-pole configuration and 50kA breaking capacity, the NM8S-1250S-3P-1250A is ideal for protecting high-capacity electrical distribution systems used throughout manufacturing facilities, commercial buildings, utilities and infrastructure projects.
Key Advantages
- 1250A rated current for large power distribution systems.
- Electronic trip unit with adjustable protection settings.
- 50kA breaking capacity for dependable fault interruption.
- 3-pole configuration for three-phase electrical installations.
- Improves protection coordination across complex electrical systems.
- Suitable for industrial, commercial and infrastructure applications.
Key Features
- Chint NM8S Electronic MCCB Series.
- 1250A rated current.
- 3-pole construction.
- Adjustable electronic protection.
- 50kA Icu breaking capacity.
- Rated operational voltage up to 690V AC.
- Suitable for fixed installation.
- Manufactured in accordance with IEC/EN 60947-2.
Reliable Protection for High-Power Distribution Systems
The Chint NM8S-1250S-3P-1250A protects critical electrical infrastructure by disconnecting circuits during overload and short-circuit fault conditions. Its electronic trip unit provides adjustable protection parameters, allowing engineers to optimise coordination throughout large electrical distribution networks.
Designed for demanding industrial environments, this MCCB offers dependable performance for main incoming supplies, high-capacity feeder circuits and distribution switchboards where reliable protection is essential for operational continuity.
Typical Applications
- Main incoming electrical supplies.
- Industrial switchboards.
- Large commercial distribution systems.
- Manufacturing plants.
- Infrastructure and utilities.
- High-capacity feeder circuit protection.
Technical Specifications
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| Trip Unit | LSI | |
|---|---|---|
| Mounting Type | Fixed | |
| Application | Power distribution | |
| Current | 1250 A | |
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 50 kA | |
| Manufacturer | Chint | |
| Series | NM8S Electronic MCCB | |
| Model | NM8S-1250S-3P-1250A | |
| Product type | Electronic moulded case circuit breaker | |
| Rated current | 1250A | |
| Frame size | 1250S | |
| Number of poles | 3 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 at 380 to 415V AC | |
| Frequency | 50 / 60Hz | |
| Mounting type | Fixed installation | |
| Standard | IEC/EN 60947-2 |
Frequently Asked Questions
What is the Chint NM8S-1250S-3P-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?
This model has a 1250A rated current.
What type of trip unit does this breaker use?
The NM8S-1250S-3P-1250A uses an adjustable electronic trip unit that enables accurate protection and improved selectivity.
What is the breaking capacity?
This breaker provides a 50kA rated ultimate short-circuit breaking capacity (Icu) at 380 to 415V AC.
Where is this MCCB typically installed?
It is commonly installed within industrial switchboards, commercial distribution boards, infrastructure projects and high-capacity electrical systems.
Trusted by Electrical Professionals Worldwide
Chint NM8S electronic MCCBs are trusted by panel builders, electrical contractors and industrial engineers for dependable high-current protection, adjustable electronic protection and reliable long-term performance in demanding power distribution applications.
