The CHINT NM1 Series 3P/4P Smart Safety MCCB 380V 125A-630A is designed for industrial power distribution, commercial building panels, motor protection circuits, and infrastructure projects. With rated current range of 125A - 630A and AC 380V rating, this molded case circuit breaker provides reliable protection against overload, short-circuit, and undervoltage conditions. Perfect for ensuring electrical safety in demanding environments.
| Parameter | Specification |
|---|---|
| Model Series | NM1 |
| Type | Molded Case Circuit Breaker (MCCB) |
| Rated Current | 125A - 630A |
| Rated Voltage | 380V AC |
| Pole Configuration | 3P / 4P (3-Pole / 4-Pole) |
| Standard | IEC/EN 60947-2 |
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 125A - 630A 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.
Chint original NM1 Molded Case 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.
| Weight | 2 kg |
|---|---|
| Dimensions | 25 × 25 × 25 cm |
| Rated Current |
10A – 1250A |
| Poles Number |
3, 2, 4 |
