SINOFUSE RS309-MF-700A RS309-MF High-Speed Square Body Fuse, 700V IEC/750V UL, 700A, Size 7TC M12 - Pack of 2

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

Key Features:

• High breaking capacity: AC 100 kA; DC 50 kA (time constant <15 ms)
• Square-body, slotted blade tags; size code 7TC
• M12 bolted mounting; recommended torque 28 ±1 N·m
• Complies with UL248 and IEC 60269; RoHS compliant
• Detailed thermal and I²t data provided for precise coordination

Technical Specifications:

• Rated current: 700 A
• Rated voltage: 700 V AC/DC (IEC); 750 V (UL)
• Interrupt rating: AC 100 kA; DC 50 kA (L/R <15 ms)
• I²t at rated voltage (A²s): pre‑arcing 95,700; clearing 325,000
• Power dissipation at In: 125 W
• Size code/dimensions (7TC, mm): A=180, B=49, C=72, D=128.5, E=141.5, F=16, G=38, H=6
• Mounting hardware: M12 bolts; torque 28 ±1 N·m

Applications:

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