Sinofuse RS309-MF-35A RS309-MF High-Speed Square Body Fuse, 700V IEC/750V UL, 35A, Size 3SA - Pack of 2
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SINOFUSE RS309-MF-35A is a cylindrical bolt-mounted high-speed fuse rated at 35A. The RS309-MF series is rated for AC/DC 700V under IEC requirements and DC 750V under UL requirements, with an aR utilization category. For the 35A variant, the manufacturer specifies a pre-arcing I²t of 45 A²s, total clearing I²t of 190 A²s, and rated power dissipation of 10W.
| Brand | SINOFUSE |
| Model | RS309-MF-35A |
| Product Type | Cylindrical bolt-mounted high-speed fuse |
| Rated Current | 35A |
| Rated Voltage | AC/DC 700V (IEC); DC 750V (UL) |
| Utilization Category | aR |
| Breaking Capacity | AC 100kA; DC 50kA (time constant ≤15ms) |
| Pre-Arcing I²t | 45 A²s |
| Total Clearing I²t | 190 A²s |
| Rated Power Dissipation | 10W |
| Size Code | 3SA |
| Weight | 65 ±3g |
| Mounting | M8 mounting bolts; recommended torque 12 ±1 N·m |
| Standards / Compliance | Performance conforms to UL 248 and IEC 60269; CE and UL certified; RoHS compliant |
Typical applications identified by the manufacturer include electric-vehicle drive power systems, power-conversion systems, energy-storage and power systems, variable-frequency controllers, chargers, conductors, and other vehicle electrical equipment requiring short-circuit, overload, or backup protection.
Apexon Supply supports B2B sourcing and replacement inquiries for the SINOFUSE RS309-MF series. For replacement projects, provide the existing fuse model, electrical ratings, installation requirements, and application details for technical review.
For an RFQ, specify SINOFUSE RS309-MF-35A, required quantity, destination country, and any project-specific requirements. Most qualified RFQs receive a response or quote within 12 hours.
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