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SinoFuse RS309-MF-S325A RS309-MF-S Series Cylindrical Bolt-Mount Fast-Acting Fuse, 700V AC/DC, 100 kA AC Interrupting, Size 6TA - 3pcs
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$110.00 USD
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SinoFuse RS309-MF-S325A Cylindrical Bolt-Mount Fast-Acting Fuse
The RS309-MF-S325A is a cylindrical, bolt-mount fast-acting aR fuse designed for EV drive systems, power conversion, and energy storage. It features compact size, low pre-arcing I²t, and high interrupting capacity. Pack Size: 3pcs.
Features
- Fast-acting aR class with low pre-arcing I²t for semiconductor protection
- High interrupting capacity: AC 100 kA; DC 50 kA (time constant ≤15 ms)
- Robust against current surges, vibration, shock, and wide temperature range
- Compliant with UL248 and IEC60269; reliability per ISO8820 and GB/T 31465
- Certified CE and UL; RoHS compliant
Applications
- Electric vehicles and road vehicle power systems
- Power conversion systems and inverters
- Energy storage and power systems
- Variable-frequency controllers and chargers
- Conductors and other vehicle electrical equipment short-circuit/overload/backup protection
Specifications
| Brand | SinoFuse |
| Series | RS309-MF-S |
| MPN | RS309-MF-S325A |
| Usage Category / Speed | aR, Fast-Acting |
| Rated Voltage | AC/DC 700 V (IEC); DC 750 V (UL) |
| Rated Current | 325 A |
| Interrupting Capacity | AC 100 kA; DC 50 kA (≤15 ms time constant) |
| Pre-arcing I²t (A²s) | 34,500 |
| Melting I²t (A²s) | 74,500 |
| Power Loss | 60 W |
| Size Code | 6TA |
| Mounting | Bolt-mount, M10 |
| Recommended Torque | 21 ±1 N·m |
| Standards Compliance | UL248, IEC60269 |
| Safety & Environmental | ISO8820, GB/T 31465; RoHS compliant |
| Operating Ambient (normal) | -5 to 40 °C (permissible -40 to 120 °C with derating) |
| Altitude (operating) | ≤2000 m (normal); ≤4500 m permissible with derating |
| Vibration/Shock | Meets GB2423.10-2008 4.1.2.6; QC/T 413-2002; suitable for rail Class II and road vehicles |
| Certifications | CE, UL |
| Pack Size | 3 pcs |
Note: All test data measured under DC conditions per IEC60269/UL248. Time constant ≤15 ms when prospective current ≥20 kA; otherwise per standard guidance.
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