Time Delay Relays Dedicated - HVAC TA SERIES Lockout Description The TA Series prevents rapid recycling of a compressor. A lockout delay is started when the thermostat opens, or input voltage is lost. Eliminates tripped circuit breakers or blown fuses caused by a locked rotor during short cycling. The TA will not allow the compressor to start when the line voltage is low. Chatter of the compressor relay is eliminated. Because of the fast initiate time, bounce of the thermostat will not be transmitted to the compressor relay coil. A 30 second delay provides anti-reversing protection for scroll compressors. Operation (Lockout) On initial closure of the S1, the compressor relay energizes immediately. When S1 opens or input voltage is interrupted, a lockout time delay is initiated. During this lockout time delay, the compressor relay cannot be energized. The low voltage (brownout) protection prevents energization of the compressor when the line voltage is low. Wiring Diagram Reset: The lockout time delay cannot be reset. After the time delay is completed, the unit automatically resets. L1 N Features & Benefits FEATURES BENEFITS V = Voltage Prevents rapid cycling of compressor and eliminates Lockout delay nuisance service calls due to blown fuse or tripped S1 = Initiate Switch, breaker by locked rotor during short cycling Contact, or Thermostat Anti-reversing protection Extends life of equipment CR = Compressor Relay for scroll compressors (Load) Timer will not allow the compressor to start during Brownout protection CA = Optional Cooling low line voltage conditions Anticipator Encapsulated Protects against shock, vibration, and humidity No moving parts to arc and wear out. Provides up to 1A solid state output 100 million operations under typical conditions Accessories P1023-6 Mounting bracket The 90 orientation of mounting slots makes installation/removal of modules quick and easy. P1015-64 (AWG 14/16) Female Quick Connect Ordering Information These 0.25 in. (6.35 mm) female terminals are constructed with an insulator barrel to provide MODEL INPUT VOLTAGE TIME DELAY strain relief. TA12D1 12VDC 1m P1015-18 Quick Connect to Screw Adapter Screw adapter terminal designed for use with TA12D2 12VDC 2m all modules with 0.25 in. (6.35 mm) male quick TA24A0.5 24VAC 30s connect terminals. C103PM (AL) DIN Rail TA24A3 24VAC 3m 35 mm aluminum DIN rail available in a 36 in. (91.4 cm) length. TA24A5 24VAC 5m If you dont find the part you need, call us for a custom product 800-843-8848 P1023-20 DIN Rail Adapter Allows module to be mounted on a 35 mm DIN type rail with two 10 screws. 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062316 www.littelfuse.com/taTime Delay Relays Dedicated - HVAC TA SERIES Mechanical Specifications Mounting Surface mount with one 10 (M5 x 0.8) screw Input Dimensions H 50.8 mm (2) W 50.8 mm (2) Voltage 12 or 24VDC 24VAC D 30.7 mm (1.21) AC Line Frequency 50/60 Hz Termination 0.25 in. (6.35 mm) male quick connect terminals Impedance 450 (anticipator by-pass) Environmental Output Operating/Storage Minimum Load Current 75mA Temperature -40 to 70C / -40 to 85C Maximum Load Current 1A at 60C Humidity 95% relative, non-condensing Voltage Drop 1.25V Weight 2.4 oz (68 g) Time Delay Thermostat Initiate Time 16ms Cooling Anticipator Resistor 1800 Lockout Time Fixed 0.5, 1, 2, 3, or 5m Tolerance -15% - 35% Protection Circuitry Encapsulated Function Diagram Low Voltage Protection 20V: 24VAC/DC 9V: 12VDC Dielectric Breakdown 2000V RMS terminals to mounting surface LOCKOUT Insulation Resistance 100 M V = Voltage S1 = Initiate Switch E L = Load (CR) E = Ready TD = Time Delay L R = Reset 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062316 www.littelfuse.com/ta