nm8-1250s-4p-1250a chint 1250a 4p adjustable thermal mccb

nm8-1250s-4p-1250a chint 1250a 4p adjustable thermal mccb

Chint NM8-1250S-4P-1250A 1250A 4 pole adjustable thermal-magnetic moulded case circuit breaker with 50 kA breaking capacity for industrial power distribution.

SKU: NM8-1250S-4P-1250AAlt SKU: NM81250S4P1250AMPN: NM8-1250S-4P-1250A
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List Price £2,722.03 ex VAT
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£2,722.03

Why Choose the Chint NM8-1250S-4P-1250A Moulded Case Circuit Breaker?

The Chint NM8-1250S-4P-1250A is a heavy-duty 4 pole moulded case circuit breaker (MCCB) engineered to provide dependable overload and short-circuit protection for the largest industrial and commercial power distribution systems. As part of the proven Chint NM8 Series, it features an adjustable thermal-magnetic trip unit, delivering flexible protection for demanding low-voltage applications.

Designed for main switchboards, distribution panels and critical electrical infrastructure, the NM8-1250S combines durable construction with reliable switching and isolation performance. Its high current rating, strong fault interruption capability and adjustable protection characteristics help maximise equipment safety and system reliability.

With a 1250 A rated current, 4 pole configuration and a 50 kA breaking capacity, the NM8-1250S-4P-1250A is ideally suited to protecting high-capacity three-phase electrical systems operating at up to 690 V AC.

Key Advantages

  • Heavy-duty 4 pole moulded case circuit breaker.
  • 1250 A rated current for high-capacity power distribution.
  • Adjustable thermal-magnetic trip unit for flexible protection settings.
  • 50 kA short-circuit breaking capacity for dependable fault interruption.
  • Suitable for switching, isolation and circuit protection.
  • Designed for reliable long-term operation in demanding industrial environments.

Key Features

  • Chint NM8 Series MCCB.
  • 1250 A rated current.
  • 4 pole configuration.
  • Adjustable thermal-magnetic trip unit.
  • 50 kA rated breaking capacity.
  • 690 V AC rated operational voltage.
  • Suitable for isolation in accordance with IEC requirements.
  • Fixed mounting for industrial switchgear and power distribution equipment.

Reliable Circuit Protection for High-Power Installations

The Chint NM8 Series is designed to protect low-voltage electrical systems against overloads and short circuits while providing dependable switching and safe isolation. Adjustable thermal-magnetic protection enables engineers to configure the breaker to suit the electrical characteristics of each installation.

The NM8-1250S is ideal for manufacturing plants, utilities, infrastructure projects and large commercial facilities where dependable protection of high-current electrical systems is essential for operational continuity.

Typical Applications

  • Main incoming distribution boards.
  • Industrial switchgear assemblies.
  • Large motor control centres.
  • Commercial and industrial electrical installations.
  • Manufacturing and processing facilities.
  • Power distribution infrastructure.

Technical Specifications

Mounting Type Fixed
Application Power distribution
Current 1250 A
Phase Three Phase
Manufacturer Chint
Series NM8
Model NM8-1250S-4P-1250A
Product type Moulded Case Circuit Breaker (MCCB)
Rated current 1250 A
Number of poles 4
Trip unit Adjustable 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 NM8-1250S
Poles 4-pole
Device Type MCCB
Breaking Capacity 50 kA
Trip Unit Thermal-magnetic

Frequently Asked Questions

What is the Chint NM8-1250S-4P-1250A used for?

It provides overload, short-circuit and isolation protection for high-current industrial and commercial electrical distribution systems.

What is the rated current of this MCCB?

This breaker has a rated current of 1250 A.

How many poles does this circuit breaker have?

The NM8-1250S-4P-1250A features a 4 pole configuration, making it suitable for three-phase systems requiring neutral isolation.

Does this breaker feature adjustable protection?

Yes. It incorporates an adjustable thermal-magnetic trip unit that allows protection settings to be tailored to the installation.

Which standards does this MCCB comply with?

The breaker is manufactured in accordance with IEC/EN 60947-2.

Trusted by Electrical Professionals Worldwide

Chint NM8 moulded case circuit breakers are trusted by panel builders, OEMs and industrial engineers for dependable protection of high-capacity low-voltage power distribution systems.

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