Product Overview
The GDC1-125 DC Miniature Circuit Breaker (MCB) is designed for direct current (DC) electrical protection in solar power systems, battery storage, and industrial control applications. With a rated current up to 125A and voltage up to 1000V, it provides reliable overload and short-circuit protection for DC distribution systems.
Its compact DIN rail design, thermo-magnetic trip characteristic, and high breaking capacity (up to 10kA) make it ideal for modern energy solutions, from photovoltaic installations to EV charging systems.
Product Features
- Wide Range of Ratings – Available in 1P, 2P, and 4P configurations from 63A to 125A.
- High Breaking Capacity – Rated up to 6000/10000A, ensuring stable performance in harsh conditions.
- Flexible Mounting – Designed for DIN rail (35mm) installation, suitable for industrial panels and solar systems.
- Thermo-Magnetic Protection – B, C, D curve options for precise overload and short-circuit protection.
- Durable and Safe – With IP20 protection, arc-resistant design, and contact position indicator for safety assurance.
- Long Service Life – Up to 10,000 mechanical operations and 8,000 electrical cycles.
Technical Specifications
| Parameter | Description |
|---|---|
| Type | GDDC1-125 |
| Rated current (In) | 63A, 80A, 100A, 125A |
| Pole | 1P, 2P, 4P |
| Rated voltage (Ue) | 1P: 250V, 2P: 500V, 4P: 1000V |
| Insulation voltage (Ui) | 1000V |
| Rated frequency | 50/60Hz |
| Breaking capacity | 6000/10000A |
| Impulse withstand voltage (Uimp) | 6kV |
| Dielectric test voltage (1 min) | 2kV |
| Thermo-magnetic release characteristic | B, C, D |
| Electrical life | 8,000 operations |
| Mechanical life | 10,000 operations |
| Contact position indicator | YES |
| Protection class | IP20 |
| Ambient temperature | -5°C to +40°C |
| Storage temperature | -25°C to +70°C |
| Terminal connection type | Cable / U-type busbar / Pin-type busbar |
| Terminal size | 25mm²; 18–3 |
| Tightening torque | 2.5 N·m |
| Mounting | DIN rail FN60715 (35mm) |
| Connection | Top and bottom |
Applications
The GDC1-125 DC MCB is designed for industrial, commercial, and renewable energy systems requiring safe and stable DC protection.
Typical Applications:
- Solar PV arrays and combiner boxes
- Battery energy storage systems (BESS)
- EV charging stations and DC distribution panels
- Telecommunication power supplies
- Industrial automation and control cabinets
Why Choose Us
As a trusted DC protection device manufacturer and exporter, we specialize in OEM/ODM miniature circuit breakers with global compliance and quality assurance.
Our products undergo strict quality control, fast production cycles, and reliable logistics to meet industrial and renewable energy market demands.
We are a reliable MCB supplier for clients across Europe, Asia, and the Middle East, committed to delivering safe, efficient, and durable circuit protection solutions.
FAQ
What is your minimum order quantity (MOQ)?
Our standard MOQ is 100 pieces per model, but we support flexible trial orders for new clients.
Can I customize the MCB with my brand or packaging?
Yes. We offer OEM and ODM services, including logo printing, packaging design, and label customization.
What is the typical delivery time?
Usually 15–25 working days after order confirmation, depending on quantity and customization.
Do you provide product certifications?
Yes. Our DC MCBs comply with IEC/EN standards and can be supplied with CE, CB, or TUV certificates upon request.
Are samples available before bulk orders?
Absolutely. We can provide sample units for testing and evaluation before mass production.
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