York S1-FRNR50 Fuse
The York S1-FRNR50 Fuse is a high-performance Class RK5 dual-element time-delay fuse designed for critical protection in HVACR systems. Rated for 50 Amps at 250V AC, this Fusetron current-limiting fuse is engineered to handle the high inrush currents typical of compressor motors and condenser fans without nuisance tripping. Its dual-element construction provides a minimum 10-second time-delay at 500% of the rated load, allowing inductive loads to start while maintaining sensitive overcurrent protection against short circuits and ground faults. This industrial-grade cartridge fuse features a 200,000 Amp RMS symmetrical interrupting rating, effectively isolating electrical faults to prevent damage to expensive control boards and motors. As an OEM replacement part, it ensures exact fitment and branch circuit protection compliance within York and Johnson Controls equipment, providing the thermal stability required for demanding rooftop and residential split system applications.
Key Benefits for Technicians- Enhanced Time-Delay: Prevents unnecessary downtime by accommodating temporary motor start-up surges.
- Class RK5 Rating: Provides superior overcurrent protection and current limitation for HVAC branch circuits.
- Corrosion-Resistan contacts: Engineered for long-term conductivity in high-heat electrical cabinets.
- Field Reliability: High interrupting rating (AIC) ensures safety during severe electrical faults.
Can I replace a fast-acting fuse with this S1-FRNR50?
No. This is a time-delay fuse specifically for motor loads; fast-acting fuses will likely blow during the high amperage draw of a compressor startup.
Is this fuse compatible with 120V circuits?
Yes, the 250V rating is the maximum voltage; it is safe for use in 120V and 240V HVAC applications.
What causes this fuse to blow if there is no short circuit?
Check for loose terminal lugs or failing run capacitors, as increased resistance or motor drag can cause sustained overcurrent exceeding the 50A thermal threshold.
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-FRNR50 Fuse
The York S1-FRNR50 Fuse is a high-performance Class RK5 dual-element time-delay fuse designed for critical protection in HVACR systems. Rated for 50 Amps at 250V AC, this Fusetron current-limiting fuse is engineered to handle the high inrush currents typical of compressor motors and condenser fans without nuisance tripping. Its dual-element construction provides a minimum 10-second time-delay at 500% of the rated load, allowing inductive loads to start while maintaining sensitive overcurrent protection against short circuits and ground faults. This industrial-grade cartridge fuse features a 200,000 Amp RMS symmetrical interrupting rating, effectively isolating electrical faults to prevent damage to expensive control boards and motors. As an OEM replacement part, it ensures exact fitment and branch circuit protection compliance within York and Johnson Controls equipment, providing the thermal stability required for demanding rooftop and residential split system applications.
Key Benefits for Technicians- Enhanced Time-Delay: Prevents unnecessary downtime by accommodating temporary motor start-up surges.
- Class RK5 Rating: Provides superior overcurrent protection and current limitation for HVAC branch circuits.
- Corrosion-Resistan contacts: Engineered for long-term conductivity in high-heat electrical cabinets.
- Field Reliability: High interrupting rating (AIC) ensures safety during severe electrical faults.
Can I replace a fast-acting fuse with this S1-FRNR50?
No. This is a time-delay fuse specifically for motor loads; fast-acting fuses will likely blow during the high amperage draw of a compressor startup.
Is this fuse compatible with 120V circuits?
Yes, the 250V rating is the maximum voltage; it is safe for use in 120V and 240V HVAC applications.
What causes this fuse to blow if there is no short circuit?
Check for loose terminal lugs or failing run capacitors, as increased resistance or motor drag can cause sustained overcurrent exceeding the 50A thermal threshold.
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
The York S1-FRNR50 Fuse is a high-performance Class RK5 dual-element time-delay fuse designed for critical protection in HVACR systems. Rated for 50 Amps at 250V AC, this Fusetron current-limiting fuse is engineered to handle the high inrush currents typical of compressor motors and condenser fans without nuisance tripping. Its dual-element construction provides a minimum 10-second time-delay at 500% of the rated load, allowing inductive loads to start while maintaining sensitive overcurrent protection against short circuits and ground faults. This industrial-grade cartridge fuse features a 200,000 Amp RMS symmetrical interrupting rating, effectively isolating electrical faults to prevent damage to expensive control boards and motors. As an OEM replacement part, it ensures exact fitment and branch circuit protection compliance within York and Johnson Controls equipment, providing the thermal stability required for demanding rooftop and residential split system applications.
Key Benefits for Technicians- Enhanced Time-Delay: Prevents unnecessary downtime by accommodating temporary motor start-up surges.
- Class RK5 Rating: Provides superior overcurrent protection and current limitation for HVAC branch circuits.
- Corrosion-Resistan contacts: Engineered for long-term conductivity in high-heat electrical cabinets.
- Field Reliability: High interrupting rating (AIC) ensures safety during severe electrical faults.
Can I replace a fast-acting fuse with this S1-FRNR50?
No. This is a time-delay fuse specifically for motor loads; fast-acting fuses will likely blow during the high amperage draw of a compressor startup.
Is this fuse compatible with 120V circuits?
Yes, the 250V rating is the maximum voltage; it is safe for use in 120V and 240V HVAC applications.
What causes this fuse to blow if there is no short circuit?
Check for loose terminal lugs or failing run capacitors, as increased resistance or motor drag can cause sustained overcurrent exceeding the 50A thermal threshold.
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.
