1600A 3/4P Fixed Air Circuit Breaker, 2000A ACB Frame

Description：

The MTW1 series intelligent circuit breaker is suitable for AC 50Hz power distribution networks with rated voltages of 400V and 690V and rated currents of 400A to 7500A. It is used to distribute electrical energy and prevent damage to circuits and electrical equipment due to overload, undervoltage, short circuit, and single-phase grounding. This circuit breaker features intelligent protection functions and precise selective protection, improving power supply reliability and preventing unexpected power outages. The impulse withstand voltage of this circuit breaker at an altitude of 2000 meters is 8000V (adjusted according to standards for different altitudes, with a maximum value not exceeding 12000V).

This product complies with GB14048.2 "Low-voltage switchgear and controlgear - Low-voltage circuit breakers" and IEC60947-2 "Low-voltage switchgear and controlgear - Part 2: Low-voltage circuit breakers" standards.

Working principle：

An air circuit breaker (ACB) operates by automatically cutting off current when it detects an overload or short circuit. During normal operation, its main contacts remain closed, allowing current to flow freely. When a sustained overcurrent occurs, the thermal element bends due to heat, triggering the circuit breaker mechanism. In the event of a sudden short circuit, the solenoid coil generates a momentary magnetic force that trips the circuit breaker mechanism. This action rapidly separates the main contacts. A strong electric arc is generated between the separated contacts and is immediately sent to the arc-extinguishing chamber, where the arc is broken up, cooled, and extinguished, thus safely disconnecting the circuit and preventing system damage.

Quick Detail:

Air Circuit Breaker

ACB

LV ACB (Low Voltage Air Circuit Breaker)

Fixed Air Circuit Breaker

Fixed ACB

2000A Circuit Breaker

1600A ACB

2000A Frame ACB

Medium-Frame ACB

Circuit Protector

Power Circuit Breaker

Main Circuit Breaker

Industrial Circuit Breaker

Fixed Mount Circuit Breaker

This 1600-2000A Fixed Air Circuit Breaker (ACB) serves as a reliable and economical solution for main power distribution and branch circuit protection in commercial buildings, industrial facilities, and infrastructure projects. It provides essential overload and short-circuit protection, ensuring the safety and stability of electrical systems where a compact, fixed-mounted design is preferred for its simplicity and cost-effectiveness.

Our 1600-2000A Fixed ACB delivers core protection without the complexity. Engineered for reliability, it features a streamlined, maintenance-friendly design that slashes initial investment and lifetime ownership costs. Unlike premium drawout units, we offer essential performance with optimized economics, ensuring robust short-circuit and overload protection for applications where operational simplicity and budget predictability are key. We provide direct-factory agility, enabling faster delivery and custom-configured solutions that large competitors cannot match.