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SINOFUSE RS309-MD-400A RS309-MD Series High-Speed Fuse, 400A, 500VDC

Regular price $40.00 USD
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The SINOFUSE RS309-MD-400A is a high-capacity cylindrical bolt-connected high-speed fuse optimized for the protection of power semiconductors in demanding industrial environments. Designed for electric vehicle drive systems and large-scale power conversion, it provides rapid fault isolation with a 50kA DC breaking capacity and low energy let-through characteristics.

Product ID (MPN) RS309-MD-400A
Rated Voltage AC/DC 500V
Rated Current 400A
Breaking Capacity AC 200kA / DC 50kA (τ ≤ 15ms)
Utilization Category aR
Size Code 6ZA
Pre-arcing I²t 31000 A²s
Total Clearing I²t 108500 A²s
Rated Power Loss 66W
Mounting Bolt M10 (Recommended Torque: 21±1N.m)
Standards UL248, IEC60269, CE, TUV, RoHS
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