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SINOFUSE RS309-MD-250A RS309-MD Series High-Speed Fuse, 250A, 500VDC
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$30.00 USD
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$30.00 USD
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The SINOFUSE RS309-MD-250A is a professional-grade cylindrical bolt-connected high-speed fuse designed for the reliable protection of power semiconductors. Optimized for electric vehicle (EV) drive systems, power conversion equipment, and energy storage systems, it offers high breaking capacity and low I²t energy let-through to protect sensitive electronic components from catastrophic failure.
| Product ID (MPN) | RS309-MD-250A |
| Rated Voltage | 500VAC / 500VDC |
| Rated Current | 250A |
| Breaking Capacity | AC 200kA / DC 50kA (τ ≤ 15ms) |
| Utilization Category | aR |
| Size Code | 5ZA |
| Pre-arcing I²t | 11200 A²s |
| Total Clearing I²t | 39000 A²s |
| Power Dissipation | 42W |
| Mounting Bolt | M8 (Recommended Torque 12±1N.m) |
| Standards | UL248, IEC60269, RoHS, CE |
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