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Sinofuse RS309-MF-S300A RS309-MF-S Series High-Speed Fuse, 300A, 700VAC/750VDC, Cylindrical Bolt-on Type - 5 Pack

Regular price $110.00 USD
Regular price Sale price $110.00 USD
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Overview

The Sinofuse RS309-MF-S300A is a professional-grade, high-speed fuse from the RS309-MF-S series, specifically designed for the protection of power semiconductors and electric vehicle (EV) systems. This cylindrical bolt-on fuse features a compact footprint, low I²t values for superior protection, and high breaking capacity. It is engineered to withstand high-intensity mechanical vibration and thermal shocks, making it ideal for demanding automotive and industrial power applications. This listing is for a pack of 5 units.

Features

  • High-Speed Protection: Optimized aR utilization category for rapid short-circuit and overcurrent protection.
  • Robust Design: Excellent resistance to mechanical vibration, impact, and chemical loads.
  • Wide Temperature Range: Reliable performance across broad thermal variations.
  • EV Ready: Specifically suitable for EV drive systems, power conversion, energy storage, and charging systems.
  • Standards Compliance: Meets UL248, IEC60269, ISO8820, and RoHS requirements; CE and UL certified.

Applications

  • Electric Vehicle (EV) Power Systems
  • Power Conversion and Inverters
  • Energy Storage Systems (ESS)
  • Variable Frequency Drives (VFD)
  • EV Charging Stations

Technical Specifications

Manufacturer Sinofuse
Model Number RS309-MF-S300A
Series RS309-MF-S
Rated Current 300A
Rated Voltage 700V AC/DC (IEC) / 750V DC (UL)
Utilization Category aR (High Speed)
Breaking Capacity 100kA AC / 50kA DC (≤15ms)
Pre-arcing I²t 23,000 A²s
Total Clearing I²t 59,900 A²s
Power Loss 56W
Mounting Type Bolt-on (M10 Screws Recommended)
Size Code 6TA
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