Parameter

Specification

Model Series

NXA

Type

Air Circuit Breaker (ACB)

Rated Current

2000A

Rated Voltage

690V AC

Pole Configuration

3P (3-Pole)

Standard

IEC/EN 60947-2

Chint NXA Air Circuit Breaker

Frame size: 1600, 2000, 3200, 4000A
Breaking capacity: N,S,H
Rated operational voltage Ue: 380/400/415V, 440/525/690V
Number of poles: 3P, 4P
Installation method: Draw-out type, Fixed type

Operation temperature:
The electrical and mechanical characteristics are applicable to the ambient temperature of -5℃-+40℃. NXA can also operate in the ambient temperature of -45℃-+70℃ (M type, A type), -20℃-+70℃ (P type, H type, CD-1). Storage conditions: apply to -45℃~+70℃

NXA can resist the following electromagnetic interference
Overvoltage generated by electromagnetic interference
Overvoltage caused by environment interference or a power distributing system
Electrostatic discharge of radio waves (radio, intercom, radar and the like)

NXA has successfully passed the test for electromagnetic compatibility specified according to the following standards (EMC) IEC/EN 60947-2 Annex F The test can guarantee no false tripping and no interference on tripping time. Protection grade: Front IP 20, other side IP 00

Weight

2 kg

Dimensions

25 × 25 × 25 cm

Rated Current

800A – 6300A

Number of Pole

3, 4

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CHINT NXA20N20 3P 2000A Air Circuit Breaker MD3/MF3

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CHINT NXA20N20 3P 2000A Air Circuit Breaker MD3/MF3

Brand Name:Chint
Place of Origin:China
Model Number:NXA
Protection:Other
Breaking Capacity:20kA – 100kA
Rated Voltage:380V – 690V
Type:Air

SKU: 1600726179716 Category: Others

Where to Use NXA?

The CHINT NXA20N20 3P 2000A Air Circuit Breaker MD3/MF3 is designed for main power distribution boards, low-voltage switchgear, and industrial power centers. With rated current range of 2000A and AC 690V rating, this air circuit breaker provides reliable protection against overload, short-circuit, and undervoltage conditions. Perfect for ensuring electrical safety in demanding environments.

Why Choose NXA 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 (3-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	NXA
Type	Air Circuit Breaker (ACB)
Rated Current	2000A
Rated Voltage	690V AC
Pole Configuration	3P (3-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). NXA series offers multiple ratings from 2000A to match your needs.

Q: Can NXA be used for motor protection?

A: Yes, NXA 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.