Sinofuse RS309-MF-600A RS309-MF High-Speed Square Body Fuse, 700V IEC/750V UL, 600A aR, Size 7TD M12 - Pack of 2

Overview: The Sinofuse RS309-MF-600A is a high-speed square body semiconductor protection fuse for AC/DC systems up to 700 V (IEC) / 750 V (UL). Rated 600 A, it provides high interrupting capability and fast fault clearing for inverters, rectifiers, DC drives, and DC common bus. This item is sold as a pack of 2 units.

Key Features:

• Rated voltage: 700 V (IEC) / 750 V (UL)
• High breaking capacity: AC 100 kA; DC 50 kA (time constant <15 ms)
• aR utilization category for semiconductor short-circuit protection
• Size code 7TD; M12 bolted mounting (recommended torque 28 ±1 N·m)
• Thermal/power data: I²t pre‑arc 76,000 A²s; clearing 249,000 A²s; power loss 120 W
• Compliance: UL248, IEC 60269; RoHS compliant

Technical Specifications:

• Rated current: 600 A
• Interrupt ratings: AC 100 kA; DC 50 kA (L/R <15 ms)
• Body/dimensions (7TD, mm): A=180, B=49, C=72, D=106, E=145, F=13.5, G=38, H=6
• Construction: Square body with slotted blade tags; bolted installation with M12 hardware

Applications:

• Semiconductor device protection in inverters/rectifiers
• DC drives and DC common bus
• Battery charging and power conversion equipment
• Industrial power electronics requiring rapid high-capacity fault interruption