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The Bussmann FRN-R-50 is a time delay fuse designed to provide reliable circuit protection in various electrical systems. This fuse has a rating of fifty amperes and operates at voltage levels of two hundred fifty volts alternating current or one hundred twenty-five volts direct current. It features a current limiting design that offers advanced protection against overloads and short circuits.
- Time Delay Fuse: Provides a delay in operation to prevent nuisance blowing during temporary overload conditions.
- Current Limiting: Reduces the risk of damage from electrical faults.
- Dual Element: Suitable for applications requiring high performance against surge currents.
Product Highlights
This fuse ensures the safety and efficiency of electrical systems by providing essential protection against overloads and short circuits. Ideal for use in various electrical applications, it supports the operational integrity of motors and equipment.
Product Information
Standard Information
- Brand: Bussmann
- Manufacturer Part Number: FRN-R-50
Features:
- Manual reset
- UL recognized
- CSA approved
- Uses 36T electrical ratings
Compatibility & Applications:
- Listed for Carrier HVAC equipment (model-specific compatibility is not provided in the listing details)
- Must only be used where the manufacturer specifies this exact part number: LH680534 (confirm by the unit's model/serial and the applicable service/parts documentation)
User Reviews & Q&A Summary:
- Reviews commonly describe:
- - Perfect/OEM fit and being the correct replacement part
- - Easy installation for those performing the repair
- - Keeping a spare flame sensor (and often an ignitor) on hand for quicker winter repairs (review-reported)
- - Positive feedback on shipping speed, packaging, and overall purchase experience
Maintenance & Troubleshooting:
- The provided sources do not include formal diagnostic procedures for this flame sensor
- Reviews reflect replacement as a practical service repair (OEM part swap), with users reporting successful replacement experiences and restored confidence in having the correct part on hand
Certifications & Compliance:
- Meets ARI 780/790 Standard
User Reviews & Q&A Summary:
- Common theme is "correct part" for the intended replacement, with users reporting it worked as expected after installation
- Review feedback frequently mentions straightforward installation for a direct replacement
- Value and fulfillment are recurring positives (good deal/price and fast shipping)
Product Highlights
Specs
| Length (Feet): | 3' |
|---|---|
| Max Temp (F): | 302ºF (150°C) |
| Insulation Material: | Silicone |
| Probe Tip Type: | Straight removable |
| Plug Type: | L-shaped banana (industry standard) |
| Type: | Silicone Test Lead |
Motors & Blowers
Thermostats
Breakers
Pilot & Ignitors

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