York S1-FRNR40 Fuse
Maintain the electrical integrity and operational safety of your York or Johnson Controls equipment with the York S1-FRNR40 Fuse. This dual-element time-delay fuse belongs to the Class RK5 family and is engineered to provide high-performance over-current protection for motor circuits, branch circuits, and inductive loads. Rated at 250V and 40 amps, the Bussmann Fusetron technology utilized in this component offers a minimum 10-second time delay at 500% load, allowing it to handle the temporary inrush currents typical of compressors and blower motors without nuisance tripping. With a 200,000 AIC rating at 250VAC, this 40A HVAC fuse is a critical safeguard against short circuits and ground faults in residential and commercial systems. Its ferrule-end design ensures a secure fit in standard fuse blocks, making it an essential OEM replacement part for maintaining system uptime and protecting expensive internal electronics from electrical damage.
Key Benefits
- Dual-Element Construction: Provides superior protection by combining short-circuit defense with an overload time-delay for inductive loads.
- High Interrupting Rating: Rated for up to 200,000 Amps RMS Symmetrical, effectively limiting high-fault currents.
- OEM Compatibility: Specifically designed as a direct replacement for York S1-FRNR40 and equivalent Class RK5 fuses.
- System Reliability: The time-delay characteristic reduces unnecessary service calls by tolerating momentary surges during motor startup.
- Technical Precision: Maintains the exact physical dimensions (3" length x 0.81" diameter) required for a tool-free, secure fit in existing panels.
Common Questions
Is the York S1-FRNR40 the same as a standard FRN-R-40?
Yes, the York S1-FRNR40 is an OEM-labeled version of a Bussmann FRN-R-40. It meets the same Class RK5 250V 40A specifications and is fully interchangeable with any 40-amp dual-element time-delay fuse of the same class.
Why does my AC keep blowing this 40-amp fuse?
A blown 40A HVAC fuse usually indicates a persistent overload or a short circuit. If it blows immediately upon startup, check for a grounded compressor or a shorted wire. If it blows after running for a while, it may be due to high head pressure or a failing motor drawing excessive amps.
Can I use a non-time-delay fuse instead?
It is not recommended. Inductive HVAC loads like compressors require the time-delay feature of the S1-FRNR40 to survive the initial startup surge. Using a fast-acting fuse will result in constant nuisance blowing.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $13.04
-65%$13.04
$4.56York S1-FRNR40 Fuse
Maintain the electrical integrity and operational safety of your York or Johnson Controls equipment with the York S1-FRNR40 Fuse. This dual-element time-delay fuse belongs to the Class RK5 family and is engineered to provide high-performance over-current protection for motor circuits, branch circuits, and inductive loads. Rated at 250V and 40 amps, the Bussmann Fusetron technology utilized in this component offers a minimum 10-second time delay at 500% load, allowing it to handle the temporary inrush currents typical of compressors and blower motors without nuisance tripping. With a 200,000 AIC rating at 250VAC, this 40A HVAC fuse is a critical safeguard against short circuits and ground faults in residential and commercial systems. Its ferrule-end design ensures a secure fit in standard fuse blocks, making it an essential OEM replacement part for maintaining system uptime and protecting expensive internal electronics from electrical damage.
Key Benefits
- Dual-Element Construction: Provides superior protection by combining short-circuit defense with an overload time-delay for inductive loads.
- High Interrupting Rating: Rated for up to 200,000 Amps RMS Symmetrical, effectively limiting high-fault currents.
- OEM Compatibility: Specifically designed as a direct replacement for York S1-FRNR40 and equivalent Class RK5 fuses.
- System Reliability: The time-delay characteristic reduces unnecessary service calls by tolerating momentary surges during motor startup.
- Technical Precision: Maintains the exact physical dimensions (3" length x 0.81" diameter) required for a tool-free, secure fit in existing panels.
Common Questions
Is the York S1-FRNR40 the same as a standard FRN-R-40?
Yes, the York S1-FRNR40 is an OEM-labeled version of a Bussmann FRN-R-40. It meets the same Class RK5 250V 40A specifications and is fully interchangeable with any 40-amp dual-element time-delay fuse of the same class.
Why does my AC keep blowing this 40-amp fuse?
A blown 40A HVAC fuse usually indicates a persistent overload or a short circuit. If it blows immediately upon startup, check for a grounded compressor or a shorted wire. If it blows after running for a while, it may be due to high head pressure or a failing motor drawing excessive amps.
Can I use a non-time-delay fuse instead?
It is not recommended. Inductive HVAC loads like compressors require the time-delay feature of the S1-FRNR40 to survive the initial startup surge. Using a fast-acting fuse will result in constant nuisance blowing.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Maintain the electrical integrity and operational safety of your York or Johnson Controls equipment with the York S1-FRNR40 Fuse. This dual-element time-delay fuse belongs to the Class RK5 family and is engineered to provide high-performance over-current protection for motor circuits, branch circuits, and inductive loads. Rated at 250V and 40 amps, the Bussmann Fusetron technology utilized in this component offers a minimum 10-second time delay at 500% load, allowing it to handle the temporary inrush currents typical of compressors and blower motors without nuisance tripping. With a 200,000 AIC rating at 250VAC, this 40A HVAC fuse is a critical safeguard against short circuits and ground faults in residential and commercial systems. Its ferrule-end design ensures a secure fit in standard fuse blocks, making it an essential OEM replacement part for maintaining system uptime and protecting expensive internal electronics from electrical damage.
Key Benefits
- Dual-Element Construction: Provides superior protection by combining short-circuit defense with an overload time-delay for inductive loads.
- High Interrupting Rating: Rated for up to 200,000 Amps RMS Symmetrical, effectively limiting high-fault currents.
- OEM Compatibility: Specifically designed as a direct replacement for York S1-FRNR40 and equivalent Class RK5 fuses.
- System Reliability: The time-delay characteristic reduces unnecessary service calls by tolerating momentary surges during motor startup.
- Technical Precision: Maintains the exact physical dimensions (3" length x 0.81" diameter) required for a tool-free, secure fit in existing panels.
Common Questions
Is the York S1-FRNR40 the same as a standard FRN-R-40?
Yes, the York S1-FRNR40 is an OEM-labeled version of a Bussmann FRN-R-40. It meets the same Class RK5 250V 40A specifications and is fully interchangeable with any 40-amp dual-element time-delay fuse of the same class.
Why does my AC keep blowing this 40-amp fuse?
A blown 40A HVAC fuse usually indicates a persistent overload or a short circuit. If it blows immediately upon startup, check for a grounded compressor or a shorted wire. If it blows after running for a while, it may be due to high head pressure or a failing motor drawing excessive amps.
Can I use a non-time-delay fuse instead?
It is not recommended. Inductive HVAC loads like compressors require the time-delay feature of the S1-FRNR40 to survive the initial startup surge. Using a fast-acting fuse will result in constant nuisance blowing.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
