The GYM9H-DC miniature circuit breaker series is a DC protection platform for photovoltaic and communication systems requiring overload and short-circuit protection up to 1000VDC. The series includes a 1-63A 6kA version and a higher-current 63-125A version, both intended for 1P to 4P DC circuit configurations.
Version Comparison
| Version | Current range | Voltage coverage | Short-circuit capacity | Notes |
|---|
| GYM9H-DC / GYM9HDC-6KA | 1A to 63A | 1P: 250VDC; 2P: 500VDC; 3P: 750VDC; 4P: 1000VDC | 6kA | Standard-current DC version for communication and photovoltaic systems |
| GYM9H-125DC | 63A, 80A, 100A, 125A | 1P: 250VDC; 2P: 500VDC; 3P: 750VDC; 4P: 1000VDC | Icu 6000A, Ics 6000A | Higher-current version for larger DC loads |
GYM9H-DC 1-63A Technical Data
| Item | Specification |
|---|
| Poles | 1P, 2P, 3P, 4P |
| Rated current In | 1A to 63A |
| Rated voltage Ue | 1P: 250VDC; 2P: 500VDC; 3P: 750VDC; 4P: 1000VDC |
| Rated impulse withstand voltage Uimp | 6kV |
| Rated breaking capacity Icn | 6kA |
| Operating breaking capacity Ics | 6kA |
| Trip method | Thermal magnetic trip |
| Thermo-magnetic release characteristic | B: 5.5In ±20%; C: 8.5In ±20% |
| Mechanical life | 20,000 operations |
| Electric life | 2,500 operations for not more than 20A; 1,500 operations for more than 20A |
| Protection class | IP20 direct installation; IP40 when installed in distribution box |
| Reference temperature | 30°C |
| Ambient temperature | -25°C to +60°C |
| Storage temperature | -25°C to +70°C |
| Wiring size | Copper/hard wire: 1-25 mm²; cord/hoop terminals: 1-16 mm² |
GYM9H-125DC High-Current Version
| Item | Specification |
|---|
| Poles | 1P, 2P, 3P, 4P |
| Rated current In | 63A, 80A, 100A, 125A |
| Rated voltage Ue | 1P: 250VDC; 2P: 500VDC; 3P: 750VDC; 4P: 1000VDC |
| Short-circuit capacity | Icu 6000A; Ics 6000A |
| Tripping curves | B, C and D curves listed in the product data |
| Standards | IEC/EN60947 and GB/T 14048.2 listed in the product data |
| Wiring capacity | Up to 35 mm² listed in the product description |
Common Functional Features
- Overload and short-circuit protection for DC circuits.
- Contact position indication for easier status checking.
- Transparent label cover and DIN rail installation support.
- Top or bottom wiring options are listed for the 1-63A version.
- Accessory support is listed for auxiliary contact, alarm contact, shunt release and under-voltage release in the 1-63A version.
