AC Magnetic Contactor
This AC magnetic contactor is designed for circuits of AC 50Hz or 60Hz with a rated insulation voltage of 660V and rated operating voltage up to 690V. It is used for making, breaking, frequently starting and controlling AC motors.




Technical Specifications
Product Overview
High-Performance GMC Magnetic Contactor
The GMC AC Contactor is a versatile control circuit device designed for making, breaking, and frequently starting AC motors. Engineered for reliability in demanding environments, it features a flame-retardant shell, high-quality copper coils, and high silver contacts for extended electrical life. This series is fully compatible with auxiliary contact blocks, timers, and thermal relays to form comprehensive motor control solutions like DOL or star-delta starters.
Technical Specifications
Key Ratings
- Operating Frequency
- 50Hz60Hz50/60Hz
- Number of Poles
- 3P4P
Construction & Design
Internal Components
- Flame-retardant outer shell
- High silver content contacts
- High-quality copper coil
- 32-piece iron core
Installation Options
- Card slot type mounting
- Fixed type mounting

Performance Data
AC3 Duty Ratings by Model
| Model | AC1 Duty (A) | 380-440V (kW) | Electrical Life (x10^4) |
|---|---|---|---|
| GMC-9 | 20 | 5.5kW | 250 |
| GMC-12 | 20 | 5.5kW | 250 |
| GMC-18 | 25 | 7.5kW | 250 |
| GMC-22 | 32 | 11kW | 250 |
| GMC-32 | 50 | 15kW | 200 |
| GMC-40 | 60 | 18.5kW | 200 |
| GMC-50 | 80 | 22kW | 200 |
| GMC-65 | 100 | 30kW | 200 |
| GMC-75 | 110 | 37kW | 200 |
| GMC-85 | 135 | 45kW | 200 |
Compliance & Standards
International Standards
Applications
Typical Applications
- AC motor starting and control
- Star-delta starters (when combined with interlocking)
- Delay contactor systems
- DOL starters (when combined with thermal relays)
- Industrial control equipment safety



