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CHINT NM1-250S/250H Series 2P/3P/4P MCCB Circuit Breaker

Brand Name:Chint
Place of Origin:China
Model Number:NM1-250
Rated Frequency (Hz):50/60Hz
Breaking Capacity:20kA – 85kA
Rated Voltage:690V
Type:Moulded Case

SKU: 1600687737041 Category: Others

Where to Use NM1?

The CHINT NM1-250S/250H Series 2P/3P/4P MCCB Circuit Breaker is designed for industrial power distribution, commercial building panels, motor protection circuits, and infrastructure projects. With rated current range of 10A - 1250A and AC 690V rating, this molded case circuit breaker provides reliable protection against overload, short-circuit, and undervoltage conditions. Perfect for ensuring electrical safety in demanding environments.

Why Choose NM1 Series?

IEC/EN60947-2 Certified - Complies with international safety standards (CE, KEMA, EAC approved)
Reliable Breaking Capacity - High fault current interruption capability up to 100kA
Flexible Configuration - 3P / 4P (3-Pole / 4-Pole) pole options, adjustable current settings
Chint Original Quality - Direct from China's leading electrical manufacturer
Easy Maintenance - Modular design allows quick replacement of accessories

Technical Specifications

Parameter	Specification
Model Series	NM1
Type	Molded Case Circuit Breaker (MCCB)
Rated Current	10A - 1250A
Rated Voltage	690V AC
Pole Configuration	3P / 4P (3-Pole / 4-Pole)
Standard	IEC/EN 60947-2

Frequently Asked Questions

Q: What is the difference between MCCB and ACB?

A: MCCB (Molded Case Circuit Breaker) is used for currents up to 1600A in distribution panels. ACB (Air Circuit Breaker) handles higher currents (1000A-6300A) and is used in main power distribution boards. Choose MCCB for branch circuits and ACB for main incoming power.

Q: How do I select the right current rating?

A: Calculate your maximum load current and add 20-25% safety margin. For motor applications, consider the inrush current (typically 6-8 times rated current). NM1 series offers multiple ratings from 10A - 1250A to match your needs.

Q: Can NM1 be used for motor protection?

A: Yes, NM1 series supports motor protection with adjustable thermal-magnetic trip units. Select a rating that accommodates the motor's starting current while providing overload protection during normal operation.

Need Technical Support? Our engineers can help you select the right model. Contact us at sales@sntelec.com or WhatsApp +86-18019187010.

Description
Additional information

Description

Chint NM1 MCCB NM1-250S/3300 NM1-250S/4300B NM1-250H/3300 1P 2P 3P 4P 150A 160A 180A 200A 225A 225A CHNT Circuit Breaker

Application:

For power distribution or protection of the circuits from over-load, short-circuit and under-voltage. In addition, the breaker could be applied to infrequently start the motor and the over-load, short-circuit and under-voltage protection of the motor, as well.

Electric ratings: AC 690V,50/60HZ, 10~1250A;

Certificates: CE, KEMA, UKrSEPRO, EAC, RCC, EK;
Standard: IEC/EN60947-2.