3/4-Pole Air Circuit Breaker
This universal circuit breaker is a mechanical switchgear. It can switch on, carry, and break current under normal circuit conditions, and also connect to carry current for a certain time and break current under specified abnormal circuit conditions.




Technical Specifications
Product Overview
Universal Air Circuit Breaker
This frame-type air circuit breaker is designed to reliably switch, carry, and break currents under both normal and specified abnormal circuit conditions. Engineered for industrial and commercial power distribution, it offers robust protection and control capabilities. With versatile mounting options and a wide range of rated currents, it is suitable for diverse electrical infrastructure requirements.
Technical Data
Performance Specifications
| Specification | MGA1-2000 | MGA1-3200 | MGA1-4000 | MGA1-6300 |
|---|---|---|---|---|
| Rated Current (A) | 400-2000 | 2000-3200 | 4000 | 4000-6300 |
| Icu at 400V (kA) | 80 | 80/100 | 80/100 | 120 |
| Ics=Icw at 400V (kA) | 50 | 80 | 80 | 100 |
| Operating Life (Electrical) | 500 | 500 | 500 | 500 |
Pole Configuration
- 3-Pole
- 4-Pole
- Mounting Options
- FixedWithdrawable
Performance & Reliability
Operating Characteristics
Mechanical Life
- Maintenance-free: 2500 operations
- Maintainable: 1000 operations




