Product Overview

© 2016 Littelfuse Protection Relays & Controls
Time Delay Relays
Dedicated - HVAC
www.littelfuse.com/ta
Rev: 1-A-062316
TA SERIES
Specifications
Input
Voltage 12 or 24VDC; 24VAC
AC Line Frequency 50/60 Hz
Impedance 450 Ω (anticipator by-pass)
Output
Minimum Load Current 75mA
Maximum Load Current 1A at 60°C
Voltage Drop ≤ 1.25V
Time Delay
Initiate Time ≅ 16ms
Lockout Time Fixed 0.5, 1, 2, 3, or 5m
Tolerance -15% - 35%
Protection
Circuitry Encapsulated
Low Voltage Protection ≅ 20V: 24VAC/DC; ≅ 9V: 12VDC
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
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 70°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Thermostat
Cooling Anticipator Resistor ≥ 1800 Ω
Function Diagram
LOCKOUT
L
E
V = Voltage
S1 = Initiate Switch
L = Load (CR)
E = Ready
TD = Time Delay
R = Reset