CT1S45 Littelfuse

Time Delay Relays Dedicated - HVAC CT SERIES Delay-on-Make/Delay-on-Break Timer Description 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 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 Wiring Diagram during the delay-on-break delay, the delay-on-break delay is reset and the fan relay remains energized. If the thermostat is closed L1 N when input voltage is applied, the delay-on-make delay (T1) begins as normal. Reset: Removing input voltage resets the output and time delays. Features & Benefits V = Voltage FEATURES BENEFITS FR = Fan Relay FS = Fan Switch Delay-on-Make and Simplifies wiring and installation, and optimizes CR = Compressor Relay Delay-on-Break in efficiency of heating and cooling systems THMS = Wall Thermostat one unit No moving parts to arc and wear out over time and Totally solid state encapsulated to protect against shock, vibration, and encapsulated and humidity Combine modules to provide sequencing on of Interconnectability with a number of loads and sequencing off of the other CT modules same loads Accessories P1015-64 (AWG 14/16) Female Quick Connect Ordering Information These 0.25 in. (6.35 mm) female terminals are DELAY-ON-MAKE DELAY-ON-BREAK constructed with an insulator barrel to provide MODEL (FIXED SECONDS) (FIXED SECONDS) strain relief. CT1S30 1 30 P1023-6 Mounting bracket The 90 orientation of mounting slots makes CT1S45 1 45 installation/removal of modules quick and easy. CT1S8 1 8 P1015-18 Quick Connect to Screw Adapter Screw adapter terminal designed for use with CT1S90 1 90 all modules with 0.25 in. (6.35 mm) male quick CT30S1 30 1 connect terminals. CT45S45 45 45 CT5S300 5 300 If you dont find the part you need, call us for a custom product 800-843-8848 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062116 wwwwww.littelfuse.com/.littelfuse.com/ctTime Delay Relays Dedicated - HVAC CT SERIES Accessories Specifications Time Delay C103PM (AL) DIN Rail Type Microcontroller 35 mm aluminum DIN rail available in a 36 in. Range 1 - 600s (91.4 cm) length. Repeat Accuracy 5% Tolerance P1023-20 DIN Rail Adapter (Factory Calibration) 20% Allows module to be mounted on a 35 mm DIN Recycle Time 300ms type rail with two 10 screws. Input Voltage 24VAC Tolerance 15% Function Diagram AC Line Frequency 50/60 Hz DELAY-ON-MAKE Output DELAY-ON-BREAK V = Voltage Type Solid state FS = Fan Switch Form NO FR = Fan Relay Rating 0.75A steady state, 5A inrush at 55C T1 = Delay-on-Make Voltage Drop 1.25V T2 = Delay-on-Break Protection R = Reset = Undefined Time Circuitry Encapsulated Dielectric Breakdown 2000V rms terminals to mounting surface Insulation Resistance 100 M Mechanical Mounting Surface mount with one 10 (M5 x 0.8) screw Dimensions H 50.8 mm (2) W 50.8 mm (2) D 30.7 mm (1.21) Termination 0.25 in. (6.35 mm) male quick connect terminals Environmental Operating/Storage Temperature -40 to 70C / -40 to 85C Humidity 95% relative, non-condensing Weight 2.4 oz (68 g) Thermostat Anticipator Resistor: 3000 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062116 wwwwww.littelfuse.com/ct.littelfuse.com/