CHINT NA1 ACB 3P/4P 1000A-4000A AC/DC Air Circuit Breaker

Name: CHINT NA1 ACB 3P/4P 1000A-4000A AC/DC Air Circuit Breaker
Brand: CHINT
SKU: 1600722064627
Availability: InStock

Brand Name:Chint
Place of Origin:China
Model Number:NA1
Rated Frequency (Hz):50/60Hz
Protection:LSI
Breaking Capacity:25kA – 100kA
Rated Voltage:400V, 690V
Type:Air

SKU: 1600722064627 Category: Others

Where to Use NA1?

The CHINT NA1 ACB 3P/4P 1000A-4000A AC/DC Air Circuit Breaker is designed for main power distribution boards, low-voltage switchgear, and industrial power centers. With rated current range of 1000A - 4000A and DC 690V rating, this air circuit breaker provides reliable protection against overload, short-circuit conditions. Perfect for ensuring electrical safety in demanding environments.

Why Choose NA1 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
DC Optimized Design - Specifically engineered for DC circuit protection with arc quenching technology

Technical Specifications

Parameter	Specification
Model Series	NA1
Type	Air Circuit Breaker (ACB)
Rated Current	1000A - 4000A
Rated Voltage	690V DC
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). NA1 series offers multiple ratings from 1000A - 4000A to match your needs.

Q: Can NA1 be used for motor protection?

A: Yes, NA1 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

Application:

Chint NA1 series air circuit breaker is suitable for the circuit of AC 50Hz/60Hz with rated service voltage 400V, 690V and rated service current up to 6300A. It is mainly used to distribute electric energy and protect circuits and electric equipment against over-load, under-voltage, short-circuit and single-phase earthing fault.

With intelligentized and selective protection functions, the breaker can improve the reliability of power supply, and avoid unnecessary power failure. The breaker is applicable for power stations, factories, mines (for 690V) and modern high- buildings, especially for the distribution system of intelligentized building.

Standard: IEC/EN 60947-2.

Type designation