Sinofuse RS308-HB-3M315A Fast-Acting Semiconductor Fuse, 315A, AC250V/DC170V
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Sinofuse RS308-HB-3M315A is a 3M cylindrical bolted fast-acting fuse for aR semiconductor protection. It is rated 315 A at AC250V/DC170V with AC250V 80 kA and DC170V 50 kA breaking capacity for power electronics and short-circuit back-up protection.
| Product ID / MPN | RS308-HB-3M315A |
| Brand / Category | Sinofuse fast-acting semiconductor fuse |
| Size Code | 3M |
| Rated Voltage | AC250V/DC170V |
| Rated Current | 315 A |
| Utilization Category | aR |
| Rated Breaking Capacity | AC250V 80 kA; DC170V 50 kA time constant 10 ms |
| Pre-Arcing I²t | 12020 A²s |
| Total Clearing I²t | 61303 A²s |
| Power Loss | 7.5 W at 0.5In; 30.0 W at In |
| Mechanical Specs | Body length 30±1.5 mm; overall length 87±2 mm; tube diameter φ31±0.5 mm; terminal span 60±3 mm; terminal width 25±0.2 mm; slot/hole 10.5±0.2 mm |
| Mounting / Connection | Bottom bolted connection; M10 mounting bolt; recommended torque 20Nm±1Nm |
| Unit Weight | 131.0±5 g |
| Standards / Compliance | IEC60269-4, UL248-13; environmental reliability conforms to ISO8820, JASO D622, GB/T31465; RoHS |
| Recommended Continuous Current | ≤0.8 × rated current |
| Minimum Breaking Current | 5In |
| Operating Ambient Temperature | Normal -5°C to 40°C; permissible -40°C to 85°C |
The RS308-HB-3M315A is used in semiconductor equipment and power electronics systems including variable-frequency drives, rectifiers, inverters and power supplies. It is also used for short-circuit and back-up protection in batteries, motors and capacitors.
Apexon Supply supports B2B sourcing and replacement review for Sinofuse RS308-HB-3M315A circuit protection components. Buyers should verify rated current, voltage, utilization category, I²t values, breaking capacity, size code and M10 bolted mounting requirements against the original equipment design before replacement.
Send the MPN, required quantity and application requirements to request a B2B quote and technical alignment support. Most qualified RFQs receive a response or quote within 12 hours.
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