Name: CT HVAC Timers Series - Delay on Make/Delay on Break Timer
Brand: Littelfuse Inc.

CT HVAC Timers Series - Delay on Make/Delay on Break Timer

Series: CT HVAC Timers

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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The CT Series combines a delay-on-make and delay-on-break time delay into one unit and may be used to control fan delays in heating and/or cooling equipment. The CT includes bypass circuitry to allow it to operate with cooling anticipators ? 3000 ohms. It is designed to operate in 24VAC control circuits. Several CT modules may be combined to provide sequencing on of any number of loads and sequencing off of the same loads, such as electric heating elements.

Operation (Delay-on-Make/Delay-on-Break)
Forced Air Heating or Air Conditioning (as shown): When the thermostat closes, the compressor relay is immediately energized. At the end of a fixed delay-on-make delay (T1), the fan relay is energized. When the thermostat opens, the compressor relay is de-energized and the delay-on-break delay is initiated. On completion of the fixed delay-on- break delay (T2) the fan relay is de-energized. If the thermostat is reclosed during the delay-on-break delay, the delay-on-break delay is reset and the fan relay remains energized. If the thermostat is closed when input voltage is applied, the delay-on-make delay (T1) begins as normal.
Reset: Removing input voltage resets the output and time delays.

Access specifications, certifications, check availability and order parts below

Catalog #	Input Voltage (V)	Output Form	Storage Temperature (F/C)	Time Delay Range	Dimensions	Stock	Samples

CT1S30	24 V ac	NO	-40° to 85°C (-40° to 185°F)	DOM: 1 s; DOB: 30 s	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
CT1S45	24 V ac	NO	-40° to 85°C (-40° to 185°F)	DOM: 1 s; DOB: 45 s	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
CT1S8	24 V ac	NO	-40° to 85°C (-40° to 185°F)	DOM: 1 s; DOB: 8 s	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
CT1S90	24 V ac	NO	-40° to 85°C (-40° to 185°F)	DOM: 1 s; DOB: 90 s	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
CT30S1	24 V ac	NO	-40° to 85°C (-40° to 185°F)	DOM: 30 s; DOB: 1 s	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
CT45S45	24 V ac	NO	-40° to 85°C (-40° to 185°F)	DOM: 45 s; DOB: 45 s	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order
CT5S300	24 V ac	NO	-40° to 85°C (-40° to 185°F)	DOM: 5 s; DOB: 300 s	2 H x 2 W in. (50.8 x 50.8 mm)	Check	Order