



GYM9H-Z AC/DC Miniature Circuit Breaker 1-63A 1P-4P
GYM9H-Z 1-63A AC/DC Miniature Circuit Breaker with 1P-4P options, designed for overload and short circuit protection in industrial, commercial and DC applications.
• AC/DC dual application circuit breaker
• Rated current up to 63A
• 1P / 2P / 3P / 4P poles available
• Rated voltage up to 600VDC
• Breaking Capacity: 6kA
• IEC 60947-2 / GB 14048.2 compliant
• Thermal magnetic protection design
• Double busbar wiring structure
• Transparent identification window
• Quick closing function
Product Description
- High Breaking Capacity: Available with 6kA and 10kA breaking capacity for reliable fault protection.
- Overload and Short-circuit Protection: Provides effective protection against electrical overloads and short circuits.
- Multiple Tripping Curves: Supports B, C, and D curves to meet different application requirements.
- Flexible Pole Options: Available in 1P, 2P, 3P, and 4P configurations.
- Wide Current Range: Rated current options from 1A to 63A.
- DIN Rail Installation: Compact modular design enables fast installation in distribution boards.
- Reliable Safety Design: High-strength flame-retardant housing and efficient arc extinguishing system improve safety performance.
- Wide Applications: Suitable for industrial facilities, commercial buildings, high-rise buildings, and residential electrical systems.
Technical Parameter
| Technical Parameter | Specification |
|---|---|
| Poles | 1P/2P/3P/4P |
| Rated current (In) | 1-63A |
| Rated voltage (Ue) | 1P: 48/60/125V DC 2P: 110/125/250/300V DC 3P: 450V DC 4P: 600V DC |
| Rated impulse withstand voltage (Uimp) | 6kV |
| Rated breaking capacity (Ics) | 6kA |
| Trip method | Thermal magnetic trip |
| Thermo-magnetic release characteristic | B: 5.5In ±20% C: 8.5In ±20% |
| Mechanical life | 20000 operations |
| Electric life | 24/h (≤32A): 2500 (≤20A) 120/h (>32A): 1500 (>20A) |
| Protection class | Direct installation: IP20 Installed in distribution box: IP40 |
| Reference temperature for setting of thermal element | 30℃ |
| Ambient temperature | -25℃ to +60℃ |
| Storage temperature | -25℃ to +70℃ |
| Wiring size | Copper/Hard Wire: 1-25mm² Cord/Hoop Terminals: 1-16mm² |
| Contact status indication | Yes |
| Circuit identification | Yes |
Application Fields
Product Applications
GYM9H High Breaking Capacity Miniature Circuit Breaker is designed for reliable overload and short-circuit protection in low-voltage DC electrical systems. With high breaking capacity, flexible pole configurations, and compact DIN rail installation, it is suitable for a wide range of power distribution and protection applications.
- Solar Energy Systems:
Used for DC circuit protection in photovoltaic power generation systems, protecting solar panels, combiner boxes, and DC distribution equipment from overload and short-circuit faults. - Energy Storage Systems:
Provides reliable protection for battery storage systems, DC cabinets, and energy management equipment to improve system safety and operational stability. - Industrial Control Systems:
Suitable for industrial automation equipment, control panels, and machinery power circuits requiring dependable DC protection. - Communication and Data Equipment:
Applied in communication power supplies, data centers, and network equipment to ensure stable operation and protect sensitive electrical components. - Transportation Systems:
Used in electric vehicles, charging infrastructure, railway systems, and other DC power applications requiring reliable circuit protection. - Commercial and Building Electrical Systems:
Provides circuit protection for distribution boards, commercial facilities, and building automation systems.





