Chint NM3DC MCCB

Brand Name:Chint
Place of Origin:China
Model Number:NM3DC
Breaking Capacity:15kA
Rated Voltage:DC 1500V

SKU: 1600798541973 Category: Chint MCCB ACB

Where to Use NM3?

The Chint NM3DC MCCB is designed for solar PV systems, DC power distribution, battery energy storage systems, and electric vehicle charging stations. With rated current range of 10A - 1250A and DC 690V rating, this molded case circuit breaker provides reliable protection against overload, short-circuit conditions. Perfect for ensuring electrical safety in demanding environments.

Why Choose NM3 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 pole options, adjustable current settings
Chint Original Quality - Direct from China's leading electrical manufacturer
Easy Maintenance - Modular design allows quick replacement of accessories
DC Optimized Design - Specifically engineered for DC circuit protection with arc quenching technology

Technical Specifications

Parameter	Specification
Model Series	NM3
Type	Molded Case Circuit Breaker (MCCB)
Rated Current	10A - 1250A
Rated Voltage	690V DC
Pole Configuration	3P / 4P
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). NM3 series offers multiple ratings from 10A - 1250A to match your needs.

Q: Can NM3 be used for motor protection?

A: Yes, NM3 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 NM3DC High-voltage (HV) Series DC Molded Case Circuit Breaker, which is designed for making and breaking electrical circuits with rated voltage DC1500V at maximum rated current of 630A electrical systems. The Circuit Breaker can reliably protect the electrical system when the system is overloaded or short-circuited.With its compact shape and excellent performance,NM3DC HV can fully meet the needs of the new energy industry and ensure the safety of DC power systems.

Rated Voltage Ue: DC 1500V ;

Frame Size current: 400A, 630A;

Rated insulation voltage: 1500V

Rated impulse withstand voltage: 12kV

Rated ultimate short-circuit breaking current(kA) @dc1500v: 15kA

Rated service short-circuit breaking current(kA) @dc1500v: 15kA

Poles: 2P

Release units type: Thermal magnetic (TM)

Accessories:Auxiliary, Alarm, shunt release, terminal cover, phase barrier

Ambient temperature: -40℃ ~+70℃

Standard complied: IEC/EN 60947-2