R3-67A /B 6.35×31.75mm Base Mount Tubular Fuse Holder
R3-67/A/B base mount fuse holder for 6.35×31.75mm tubular fuse, PBT UL94‑V0 housing, H65 brass contact, 50A 250VAC / 1000VDC, 3000VAC withstand. Download datasheet & request quote.
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This 6.35×31.75mm base mount fuse holder (R3‑67A/B) is designed for chassis and base installation, compatible with standard 6.35 × 31.75mm tubular fuses. It adopts PBT housing with UL94‑V0 flame retardant rating and H65 brass contact points, delivering stable 50A current carrying capacity. With rated voltage up to 1000V DC and 3000V AC dielectric withstand, it is ideal for high‑voltage DC scenarios like photovoltaic inverters, energy storage systems and industrial power supplies.
Key Features
- Mounting type: Base / chassis mount
- Compatible fuse: 6.35 × 31.75mm tubular fuse
- Housing material: PBT, UL94‑V0 flame retardant
- Contact material: H65 brass
- Rated current: 50A
- Rated voltage: 250V AC / 1000V DC
- Dielectric withstand: > 3000V AC
- Contact resistance: < 5 mΩ
- Insulation resistance: > 100 MΩ
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number | R3(67)A/B |
| Product Type | Base Mount Tubular Fuse Holder |
| Compatible Fuse | 6.35 × 31.75mm tubular fuse |
| Mounting Method | Base / Chassis mount |
| Housing Material | PBT, UL94‑V0 |
| Contact Material | H65 Brass |
| Rated Current | 50A |
| Rated Voltage | 250V AC / 1000V DC |
| Dielectric Withstand Voltage | > 3000V AC |
| Contact Resistance | < 5 mΩ |
| Insulation Resistance (500V DC) | > 100 MΩ |
Mechanical Dimensions
- Total length: 35.2 ± 0.2mm
- Body length: 21.8 ± 0.2mm
- Body height: 14.5 ± 0.2mm
- Mounting hole diameter: 2.7 ± 0.2mm
Please refer to the R3(67)A dimension drawing for exact mounting hole layout and tolerances.
Typical Applications
- Industrial power supplies and chargers
- Photovoltaic (PV) inverters and combiner boxes
- Energy storage system (ESS) DC circuits
- High‑voltage DC distribution equipment
- Telecommunication base station power units
Download Resources
PDF ：R3(67)A /B 6.35×31.75mm Base Mount Tubular Fuse Holder
Button：Download R3(67)A Datasheet
Frequently Asked Questions
1：What fuse size fits R3(67)A fuse holder?
R3(67)A is designed for standard 6.35 × 31.75mm tubular fuses.
2：Can this fuse holder be used for 1000V DC circuits?
Yes, it is rated 50A at 1000V DC, suitable for high‑voltage DC applications like PV and energy storage.
3：What is the mounting method of R3(67)A?
It is a base / chassis mount type, fixed by screw mounting holes.
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