GYM9H-125 DC Miniature Circuit Breaker
GYM9H-125 DC Miniature Circuit Breaker is a high-performance DC protection device designed for photovoltaic systems, energy storage systems, communication equipment, and industrial DC applications. Supporting rated currents up to 125A and voltage ratings up to 1000VDC, it provides reliable protection against overloads, short circuits, and electrical faults in DC circuits.
With multiple pole configurations including 1P, 2P, 3P, and 4P, as well as high breaking capacity up to 6kA, the GYM9H-125DC ensures safe and stable operation for various DC power distribution systems. Complying with IEC/EN60947 and GB/T 14048.2 standards, it delivers dependable protection performance for modern DC applications.
•High Current DC Protection: Supports rated currents from 63A to 125A, providing reliable protection for high-power DC systems.
•Flexible Pole Configurations: Available in 1P, 2P, 3P, and 4P versions to meet different DC circuit protection requirements.
•Wide Voltage Application: Supports up to 1000VDC rated voltage with different pole configurations, suitable for photovoltaic and energy storage systems.
•High Breaking Capacity: Provides 6kA ultimate and service short-circuit breaking capacity for enhanced fault protection.
•Reliable Overload & Short-Circuit Protection: Provides accurate thermal and magnetic protection characteristics to quickly respond to abnormal current conditions.
•Temperature Compensation Design: Optimized current correction characteristics ensure stable performance under different ambient temperatures from -20°C to 60°C.
•Standards Compliance: Designed according to IEC/EN60947 and GB/T 14048.2 standards for reliable quality and safety performance.
•Versatile DC Applications: Suitable for solar PV systems, battery energy storage systems, communication power supplies, and industrial DC distribution.
Features
Functions and Applications
Overload, short circuit, isolation; Suitable for communication, photovoltaic and other DC system applications.
Product Feature
Standard：IEC/EN60947、GB/T 14048.2
Contact Position Indication Function
Maximum Wiring Capacity 35mm^2
Technical Specification
Rated Current（In）: 63、80、100、125
Rated Voltage（Ue）: 1P:250VDC;2P:500VDC;3P:750VDC;4P:1000VDC；
Working Frequency: 50/60Hz；
Tripping Curves: Ii=6In(B)，Ii=8.5In(C )，Ii=12In(D)
Rated ultimate shortcircuit breaking capacity(Icu): 6kA
Poles: 1P、2P、3P、4P
Mechanical Life: 10000 times
Rated impulse withstand voltage (Uimp): 4kV
Wiring Diagram
Outline Overall And Installing Dimensions
Specification
Temperature Compensation
| Ambient Temperature | -20°C | -10°C | 0°C | 10°C | 20°C | 30°C | 40°C | 50°C | 60°C |
| Current Correction Factor | 1.25 | 1.2 | 1.15 | 1.10 | 1.05 | 1.00 | 0.95 | 0.90 | 0.85 |
Performance Characteristic
| Test | Test current | Initial Condition | Limits of tripping or non-tripping time | Result to be obtained | Remarks | Fiducial temperature |
| B/C/D | 1.05In | Cold | t≤1h(In≤63) | No tripping | 30℃ | |
| 1.3In | Immediately following | t≤1h(In≤63) | Tripping | Current steadily increased within 5s | ||
| 2.55In | Cold | 1s<t<60s(in≤32a) 1s<t<120s(in≤32a)< td=””> |
Tripping | |||
| B | 4.8In | Cold | t≤0.1S | No tripping | ||
| C | 6.8In | Cold | ||||
| D | 9.6In | Cold | ||||
| B | 7.2In | Cold | t≤0.1S | Tripping | ||
| C | 10.2In | Cold | ||||
| D | 14.4In | Cold |
User Manual
Frequently Asked Questions About GYM9H-125 DC Miniature Circuit Breaker
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