GYW1 air circuit breakers are used for low-voltage distribution protection and control in high-current AC systems. The series is available in fixed and draw-out structures and supports intelligent monitoring and remote operation through controller and communication functions.
Key Features
- Available in fixed and draw-out configurations.
- Rated current range from 200A to 6300A across 2000, 4000 and 6300 frame ratings.
- 3-pole and 4-pole versions are listed in the technical data.
- Contact system uses a single-stage design with main-contact and arc-contact functions.
- Arc-extinguishing chambers are installed for each pole and housed in the insulating base.
- Operating mechanism uses stored-energy operation and a five-link free-trip mechanism.
- Intelligent controller can monitor parameters such as current, voltage and power, with communication support for remote status monitoring and operation.
Electrical Ratings
| Item |
2000 frame |
4000 frame |
6300 frame |
| Frame rated current Inm |
2000A |
4000A |
6300A |
| Rated current In |
200A, 400A, 630A, 800A, 1000A, 1250A, 1600A, 2000A |
2500A, 2900A, 3200A, 3600A, 4200A |
4000A, 5000A, 6000A |
| Rated working voltage Ue |
AC400V / AC690V, 50Hz |
AC400V / AC690V, 50Hz |
AC400V / AC690V, 50Hz |
| Rated insulation voltage Ui |
AC1000V, 50Hz |
AC1000V, 50Hz |
AC1000V, 50Hz |
| Rated impulse withstand voltage Uimp |
8000V |
8000V |
8000V |
| Poles |
3P / 4P |
3P / 4P |
3P / 4P |
Short-Circuit Performance
| Item |
AC400V |
AC690V |
| Icu, 2000 frame |
80kA |
50kA |
| Icu, 4000 frame |
100kA |
65kA |
| Icu, 6300 frame |
120kA |
75kA |
| Ics, 2000 frame |
50kA |
40kA |
| Ics, 4000 frame |
65kA |
50kA |
| Ics, 6300 frame |
100kA |
65kA |
Operating Performance
- Full breaking time without additional delay: 25ms to 30ms.
- Closing time: maximum 70ms.
- Electrical life at AC400V or AC690V is listed as 500 operations.
- Mechanical life is listed as 2500 operations without maintenance for 2000 and 4000 frames, and 2000 operations for the 6300 frame.
