
York S1-FNQR1 Fuse
The York S1-FNQR1 is a professional-grade 1A 600V time-delay fuse specifically engineered for high-performance HVAC control circuits and industrial applications. As a Class CC rejection fuse, this component provides critical protection for control transformers and inductive loads where high inrush currents are common. The S1-FNQR1 utilizes a specialized time-delay characteristic that prevents nuisance blowing during initial equipment startup while maintaining a high interrupting capacity, typically rated up to 200,000 Amps AC. This 600V time-delay cartridge fuse features a rejection-style tip, ensuring that only the correct class of fuse is installed in the holder, which maintains the safety integrity of the control board. For technicians servicing York configurations, this CC class fuse is essential for protecting sensitive electronics against overcurrent and short-circuit conditions. Its robust construction is designed to withstand the thermal cycling and vibration inherent in rooftop units and chiller control panels, ensuring reliable circuit continuity.
Key Benefits for Technicians:
- Rejection-style design ensures compliance and prevents the installation of fuses with lower interrupting ratings.
- Superior time-delay performance handles the momentary surges of motor starters and solenoids without failing.
- High interrupting rating provides maximum short-circuit protection for sensitive HVAC control systems.
- Compact Class CC footprint fits standard industrial control fuse blocks and disconnects.
Common Technical Questions:
Can I use a standard 1-amp fuse instead of the S1-FNQR1?
No. The York S1-FNQR1 is a Class CC rejection fuse. Standard fuses do not have the physical rejection feature or the specific current-limiting characteristics required to protect the transformer and control hardware in these systems.
What does the time-delay feature do for HVAC circuits?
It allows the fuse to carry a brief overload—such as when a contactor coil or transformer is first energized—without opening the circuit, while still providing rapid protection against sustained overcurrents.
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: $21.74
-65%$21.74
$7.61York S1-FNQR1 Fuse
The York S1-FNQR1 is a professional-grade 1A 600V time-delay fuse specifically engineered for high-performance HVAC control circuits and industrial applications. As a Class CC rejection fuse, this component provides critical protection for control transformers and inductive loads where high inrush currents are common. The S1-FNQR1 utilizes a specialized time-delay characteristic that prevents nuisance blowing during initial equipment startup while maintaining a high interrupting capacity, typically rated up to 200,000 Amps AC. This 600V time-delay cartridge fuse features a rejection-style tip, ensuring that only the correct class of fuse is installed in the holder, which maintains the safety integrity of the control board. For technicians servicing York configurations, this CC class fuse is essential for protecting sensitive electronics against overcurrent and short-circuit conditions. Its robust construction is designed to withstand the thermal cycling and vibration inherent in rooftop units and chiller control panels, ensuring reliable circuit continuity.
Key Benefits for Technicians:
- Rejection-style design ensures compliance and prevents the installation of fuses with lower interrupting ratings.
- Superior time-delay performance handles the momentary surges of motor starters and solenoids without failing.
- High interrupting rating provides maximum short-circuit protection for sensitive HVAC control systems.
- Compact Class CC footprint fits standard industrial control fuse blocks and disconnects.
Common Technical Questions:
Can I use a standard 1-amp fuse instead of the S1-FNQR1?
No. The York S1-FNQR1 is a Class CC rejection fuse. Standard fuses do not have the physical rejection feature or the specific current-limiting characteristics required to protect the transformer and control hardware in these systems.
What does the time-delay feature do for HVAC circuits?
It allows the fuse to carry a brief overload—such as when a contactor coil or transformer is first energized—without opening the circuit, while still providing rapid protection against sustained overcurrents.
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.
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Description
The York S1-FNQR1 is a professional-grade 1A 600V time-delay fuse specifically engineered for high-performance HVAC control circuits and industrial applications. As a Class CC rejection fuse, this component provides critical protection for control transformers and inductive loads where high inrush currents are common. The S1-FNQR1 utilizes a specialized time-delay characteristic that prevents nuisance blowing during initial equipment startup while maintaining a high interrupting capacity, typically rated up to 200,000 Amps AC. This 600V time-delay cartridge fuse features a rejection-style tip, ensuring that only the correct class of fuse is installed in the holder, which maintains the safety integrity of the control board. For technicians servicing York configurations, this CC class fuse is essential for protecting sensitive electronics against overcurrent and short-circuit conditions. Its robust construction is designed to withstand the thermal cycling and vibration inherent in rooftop units and chiller control panels, ensuring reliable circuit continuity.
Key Benefits for Technicians:
- Rejection-style design ensures compliance and prevents the installation of fuses with lower interrupting ratings.
- Superior time-delay performance handles the momentary surges of motor starters and solenoids without failing.
- High interrupting rating provides maximum short-circuit protection for sensitive HVAC control systems.
- Compact Class CC footprint fits standard industrial control fuse blocks and disconnects.
Common Technical Questions:
Can I use a standard 1-amp fuse instead of the S1-FNQR1?
No. The York S1-FNQR1 is a Class CC rejection fuse. Standard fuses do not have the physical rejection feature or the specific current-limiting characteristics required to protect the transformer and control hardware in these systems.
What does the time-delay feature do for HVAC circuits?
It allows the fuse to carry a brief overload—such as when a contactor coil or transformer is first energized—without opening the circuit, while still providing rapid protection against sustained overcurrents.
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.












