Littelfuse CT1S45 Timing Module
The Littelfuse CT1S45 is a high-performance ON/OFF timing module engineered specifically for the rigorous demands of commercial and residential HVACR control circuits. As a veteran-preferred 24VAC delay timer, this unit integrates both delay-on-make (1 second) and delay-on-break (45 seconds) functionality into a single, compact footprint. This dual-timing capability is essential for managing fan cycles and preventing equipment short-cycling, ensuring optimal system efficiency and component longevity. Built with fully encapsulated circuitry, the CT1S45 is designed to withstand high humidity (up to 95% non-condensing) and mechanical vibration, common in outdoor condensers and air handler cabinets.
For technicians performing field repairs, the CT1S45 serves as the direct replacement for 99164001. It features 0.25-inch male quick-connect terminals for rapid termination and includes bypass circuitry compatible with cooling anticipators (? 3000 ohms). This solid-state timing relay supports a steady-state load of 0.75A and an adaptive inrush current of up to 5A, making it a reliable choice for driving fan relays and contactors. Note that this is a standalone module; internal wiring and mounting screws are not included and must be sourced separately for the specific installation.
Key Benefits- Dual-Function Timing: Combines a 1-second delay-on-make and a 45-second delay-on-break to streamline furnace and AC fan control.
- Industrial-Grade Durability: The encapsulated housing protects against moisture, thermal shock, and dust in harsh mechanical environments.
- Versatile Compatibility: Designed for standard 24VAC HVAC control systems with integrated support for thermostat anticipator resistors.
- Simplified Mounting: Features a surface-mount design requiring only a single #10 screw, allowing for quick placement in tight control panels.
- Reliable Performance: Solid-state design eliminates moving parts, reducing the risk of contact arcing or mechanical failure under heavy cycle loads.
Is this module compatible with my existing wiring?
The CT1S45 uses standard 0.25" quick-connect terminals. Since it is a replacement for 99164001, it typically fits the same footprint, but you must reuse your existing wiring and mounting hardware as they are not supplied with the new module.
Can I use this for sequencing multiple loads?
Yes, several CT Series timing modules can be wired in combination to provide precise sequencing for electric heating elements or multiple fan stages.
How does this handle thermostat anticipators?
The unit includes built-in bypass circuitry specifically for cooling anticipators with a minimum resistance of 3000 ohms, preventing "ghost" calls or timing errors.
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.
Littelfuse CT1S45 Timing Module
The Littelfuse CT1S45 is a high-performance ON/OFF timing module engineered specifically for the rigorous demands of commercial and residential HVACR control circuits. As a veteran-preferred 24VAC delay timer, this unit integrates both delay-on-make (1 second) and delay-on-break (45 seconds) functionality into a single, compact footprint. This dual-timing capability is essential for managing fan cycles and preventing equipment short-cycling, ensuring optimal system efficiency and component longevity. Built with fully encapsulated circuitry, the CT1S45 is designed to withstand high humidity (up to 95% non-condensing) and mechanical vibration, common in outdoor condensers and air handler cabinets.
For technicians performing field repairs, the CT1S45 serves as the direct replacement for 99164001. It features 0.25-inch male quick-connect terminals for rapid termination and includes bypass circuitry compatible with cooling anticipators (? 3000 ohms). This solid-state timing relay supports a steady-state load of 0.75A and an adaptive inrush current of up to 5A, making it a reliable choice for driving fan relays and contactors. Note that this is a standalone module; internal wiring and mounting screws are not included and must be sourced separately for the specific installation.
Key Benefits- Dual-Function Timing: Combines a 1-second delay-on-make and a 45-second delay-on-break to streamline furnace and AC fan control.
- Industrial-Grade Durability: The encapsulated housing protects against moisture, thermal shock, and dust in harsh mechanical environments.
- Versatile Compatibility: Designed for standard 24VAC HVAC control systems with integrated support for thermostat anticipator resistors.
- Simplified Mounting: Features a surface-mount design requiring only a single #10 screw, allowing for quick placement in tight control panels.
- Reliable Performance: Solid-state design eliminates moving parts, reducing the risk of contact arcing or mechanical failure under heavy cycle loads.
Is this module compatible with my existing wiring?
The CT1S45 uses standard 0.25" quick-connect terminals. Since it is a replacement for 99164001, it typically fits the same footprint, but you must reuse your existing wiring and mounting hardware as they are not supplied with the new module.
Can I use this for sequencing multiple loads?
Yes, several CT Series timing modules can be wired in combination to provide precise sequencing for electric heating elements or multiple fan stages.
How does this handle thermostat anticipators?
The unit includes built-in bypass circuitry specifically for cooling anticipators with a minimum resistance of 3000 ohms, preventing "ghost" calls or timing errors.
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 Littelfuse CT1S45 is a high-performance ON/OFF timing module engineered specifically for the rigorous demands of commercial and residential HVACR control circuits. As a veteran-preferred 24VAC delay timer, this unit integrates both delay-on-make (1 second) and delay-on-break (45 seconds) functionality into a single, compact footprint. This dual-timing capability is essential for managing fan cycles and preventing equipment short-cycling, ensuring optimal system efficiency and component longevity. Built with fully encapsulated circuitry, the CT1S45 is designed to withstand high humidity (up to 95% non-condensing) and mechanical vibration, common in outdoor condensers and air handler cabinets.
For technicians performing field repairs, the CT1S45 serves as the direct replacement for 99164001. It features 0.25-inch male quick-connect terminals for rapid termination and includes bypass circuitry compatible with cooling anticipators (? 3000 ohms). This solid-state timing relay supports a steady-state load of 0.75A and an adaptive inrush current of up to 5A, making it a reliable choice for driving fan relays and contactors. Note that this is a standalone module; internal wiring and mounting screws are not included and must be sourced separately for the specific installation.
Key Benefits- Dual-Function Timing: Combines a 1-second delay-on-make and a 45-second delay-on-break to streamline furnace and AC fan control.
- Industrial-Grade Durability: The encapsulated housing protects against moisture, thermal shock, and dust in harsh mechanical environments.
- Versatile Compatibility: Designed for standard 24VAC HVAC control systems with integrated support for thermostat anticipator resistors.
- Simplified Mounting: Features a surface-mount design requiring only a single #10 screw, allowing for quick placement in tight control panels.
- Reliable Performance: Solid-state design eliminates moving parts, reducing the risk of contact arcing or mechanical failure under heavy cycle loads.
Is this module compatible with my existing wiring?
The CT1S45 uses standard 0.25" quick-connect terminals. Since it is a replacement for 99164001, it typically fits the same footprint, but you must reuse your existing wiring and mounting hardware as they are not supplied with the new module.
Can I use this for sequencing multiple loads?
Yes, several CT Series timing modules can be wired in combination to provide precise sequencing for electric heating elements or multiple fan stages.
How does this handle thermostat anticipators?
The unit includes built-in bypass circuitry specifically for cooling anticipators with a minimum resistance of 3000 ohms, preventing "ghost" calls or timing errors.
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.
