10x38mm Fuse Holder | 32A 1000V DC Panel Mount Fuse Block
High voltage 10x38mm fuse holder with panel mount design, PBT UL94 V-0 flame retardant housing and tinned copper alloy terminals, rated 32A 1000V DC / 50A 750V AC, up to 125℃ operating temperature, designed for PV combiner boxes, energy storage systems and industrial high voltage circuit overcurrent protection.
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Cái 10x38mm fuse holder is a high-voltage panel mount fuse block engineered for medium to high voltage AC and DC circuit protection. This panel mount fuse block adopts high-performance PBT insulating housing paired with tinned copper alloy conductive terminals, delivering excellent insulation strength, high voltage endurance and stable current carrying capacity for high voltage systems. With a 1000V DC voltage rating and 125℃ high temperature resistance, it is widely deployed in solar PV combiner boxes, battery energy storage systems, industrial high-voltage power supplies and new energy distribution equipment.
Key Product Features
- Compatible with standard 10×38mm cartridge fuses, matched with GFEFUSE H10HF series high voltage fuses
- High voltage rating: 32A at 1000V DC; 50A at 750V AC, covers mainstream high voltage DC and AC protection requirements
- Housing made of PBT (Polybutylene Terephthalate), UL94 V-0 flame retardant grade, excellent heat resistance and electrical insulation
- Tinned copper alloy terminals, high conductivity, low contact resistance, excellent oxidation resistance and solderability
- Power frequency withstand voltage above 3000V AC, insulation resistance greater than 100mΩ, high operational safety for high voltage scenarios
- Contact resistance below 5mΩ, low power loss, stable electrical performance under long-term high load operation
- Wide operating temperature range up to 125℃, adapts to high-temperature industrial and new energy equipment environments
- Threaded panel mount structure, standard cutout size, easy front-panel fuse replacement without enclosure disassembly
Compared with low-voltage panel fuse holders, this high-voltage model has significantly upgraded DC voltage endurance and temperature resistance, making it suitable for harsh high-voltage DC operating environments such as photovoltaic and energy storage systems. Its PBT housing provides outstanding arc resistance and thermal stability, serving as a standard protection solution for 1000V-class high-voltage DC distribution circuits.
Full Technical Specifications
| Item | Parameter |
|---|---|
| Model | 0001038G |
| Compatible Fuse | 10 × 38mm cartridge fuse (matched with GFEFUSE H10HF series) |
| Rated Current & Voltage (DC) | 32A @ 1000V DC |
| Rated Current & Voltage (AC) | 50A @ 750V AC |
| Housing Material | PBT (Polybutylene Terephthalate), UL94 V-0 flame retardant |
| Terminal Material | Tinned copper alloy |
| Contact Resistance | ＜ 5 mΩ |
| Insulation Resistance | ＞ 100 mΩ |
| Power Frequency Withstand Voltage | ＞ 3000V AC |
| Maximum Operating Temperature | 125 ℃ |
| Mounting Method | Panel mount, threaded nut fixing |
Selection & Application Guidance
When selecting a 10x38mm high voltage fuse holder, first confirm the system voltage type (AC/DC), rated current and fuse specifications. For 1000V-class DC systems such as photovoltaic and energy storage, a dedicated high-voltage DC fuse holder with sufficient voltage withstand rating must be selected to avoid insulation breakdown risks. Select a matching 10x38mm high-voltage fuse with appropriate current rating based on actual load, and reserve a 1.25–1.5 times safety margin to prevent overheating under continuous operation. For high-temperature operating environments, prioritize models with PBT housing and 125℃ temperature rating to ensure long-term reliable operation. Verify that the panel cutout matches the standard mounting size to ensure firm installation and stable contact performance.
Typical Application Scenarios
- Solar PV combiner boxes and photovoltaic inverter high-voltage DC circuits
- Battery energy storage systems (ESS) and BMS high-voltage distribution
- Industrial high-voltage DC power supplies and power distribution equipment
- EV charging stations and new energy auxiliary power systems
- Telecom base stations and communication power supply equipment
- Test instruments and laboratory high-voltage DC power supplies
- Industrial automation control and medium-voltage distribution units
Installation & Maintenance Instructions
1. Select a 10x38mm high-voltage cartridge fuse with matching current and voltage rating per circuit protection requirements.
2. Drill a standard mounting hole on the equipment panel, insert the fuse holder from the front side, and tighten the fixing nut from the back to ensure firm installation.
3. Connect circuit wires tightly to the rear terminals and apply proper insulation treatment to prevent short-circuit hazards.
4. Insert the fuse fully into the holder and tighten the end cap to ensure reliable contact and insulation performance.
5. Do not operate beyond the rated voltage and current range to prevent insulation breakdown and safety risks.
6. Disconnect power completely and discharge the circuit before fuse replacement to avoid electric shock and short-circuit damage.
7. Inspect terminals and fuses periodically for looseness, oxidation or overheating signs, and replace components promptly if abnormalities are found.
Frequently Asked Questions
Q1: What fuse size does this 10x38mm fuse holder support?
A1: It is compatible with standard 10×38mm cartridge fuses, and is specially matched with GFEFUSE H10HF series high-voltage fuses for 1000V-class circuit protection.
Q2: What are the rated current and voltage?
A2: It supports 32A at 1000V DC and 50A at 750V AC, covering most high-voltage DC and medium-voltage AC industrial and new energy protection scenarios.
Q3: What material is the housing made of?
A3: The housing is made of PBT (Polybutylene Terephthalate) with UL94 V-0 flame retardant grade, featuring excellent high temperature resistance, arc suppression and electrical insulation performance.
Q4: What material are the terminals made of?
A4: The terminals are made of tinned copper alloy, with high conductivity, low contact resistance, excellent oxidation resistance and reliable long-term current carrying performance.
Q5: What is the maximum operating temperature?
A5: The maximum operating temperature reaches 125℃, which can adapt to high-temperature working environments such as industrial equipment and new energy power systems.
Q6: What is the withstand voltage and insulation resistance?
A6: The power frequency withstand voltage is above 3000V AC, and the insulation resistance is greater than 100mΩ, providing high insulation strength and operational safety for high-voltage scenarios.
Q7: What are the main application fields?
A7: Widely used in solar PV combiner boxes, battery energy storage systems, industrial high-voltage power supplies, charging stations, test instruments and various high-voltage AC/DC circuit overcurrent protection.
