SINOFUSE RS308-HB-2H Cylindrical Bolt-Connected High-Speed Fuse Series, 50–200A, 750VDC
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SINOFUSE RS308-HB-2H is a cylindrical bolt-connected high-speed fuse series with seven verified 750VDC models covering rated currents from 50A to 200A. All included variants use the 2H size code and share an M8 mounting-bolt configuration with a recommended installation torque of 11 N·m. The individual models differ by rated current, pre-arcing I²t, total I²t, and power loss. This page organizes those manufacturer-specified values into a single procurement-ready matrix so technical buyers can identify the exact model required and compare the electrical characteristics that change across the series.
RS308-HB-2H Series Overview
The RS308-HB-2H group is part of the SINOFUSE RS308-HB 750VDC high-speed fuse family. The included models maintain the same 750VDC rating, 2H size designation, mounting hardware, and recommended mounting torque while providing seven rated-current selections. This makes rated current the primary Shopify selection attribute, with I²t and power-loss values available for model-by-model technical comparison.
Technical Specifications
| Specification | Series Data |
|---|---|
| Rated Voltage | 750 VDC |
| Included Rated Current Range | 50–200 A |
| Size Code | 2H |
| Mounting Bolt | M8 |
| Recommended Mounting Torque | 11 N·m |
Technical data reference: SINOFUSE RS308-HB 750VDC Cylindrical Bolt-Connected High-Speed Fuse Selection Specification.
RS308-HB-2H Model Selection
The verified RS308-HB-2H selection covers 50A, 63A, 80A, 100A, 125A, 160A, and 200A ratings. Select the required model first by rated current, then compare the manufacturer-specified pre-arcing I²t, total I²t, and power loss against the requirements of the protected circuit or equipment. Because these electrical values change with current rating, they should be reviewed at the exact model level rather than treated as common series specifications. Confirm the complete MPN and electrical and mechanical requirements before ordering or evaluating a replacement.
| Exact MPN | Rated Current | Pre-Arcing I²t | Total I²t | Power Loss |
|---|---|---|---|---|
| RS308-HB-2H50A 750VDC | 50 A | 307 A²s | 1,220 A²s | 11.6 W |
| RS308-HB-2H63A 750VDC | 63 A | 599 A²s | 2,224 A²s | 13.7 W |
| RS308-HB-2H80A 750VDC | 80 A | 940 A²s | 3,738 A²s | 17 W |
| RS308-HB-2H100A 750VDC | 100 A | 1,554 A²s | 6,178 A²s | 20.6 W |
| RS308-HB-2H125A 750VDC | 125 A | 2,763 A²s | 10,984 A²s | 24.5 W |
| RS308-HB-2H160A 750VDC | 160 A | 4,668 A²s | 18,563 A²s | 31 W |
| RS308-HB-2H200A 750VDC | 200 A | 8,300 A²s | 33,000 A²s | 36.6 W |
Verified Applications
The supplied model table does not identify application-specific industries or equipment. Selection should therefore remain based on the verified electrical and mounting data for the RS308-HB-2H models and the requirements of the protected circuit.
B2B Sourcing and Replacement Support
Apexon Supply provides independent B2B sourcing support for the SINOFUSE RS308-HB-2H series, including exact model identification, variant comparison, and replacement-sourcing review. Confirm the required current rating, 750VDC voltage requirement, M8 mounting configuration, I²t characteristics, and power-loss value before replacement.
For RFQ review, submit the complete MPN, required rated current, quantity, and application requirements. Apexon Supply can review sourcing options and technical alignment without implying interchangeability or confirmed availability.
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