Product Overview

© 2016 Littelfuse Protection Relays & Controls
Time Delay Relays
Delay-on-Make
www.littelfuse.com/
Rev: 1-A-062116
www.littelfuse.com/www.littelfuse.com/tdu-tduh-tdul
TDU / TDUH / TDUL SERIES
Specifications
Time Delay
Type Digital integrated circuitry
Range* 0.1 - 102.3s in 0.1s increments
1 - 1,023s in 1s increments
10 - 10,230s in 10s increments
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Tolerance
(Factory Calibration) ±10%
Recycle Time ≤ 150ms
Time Delay vs Temp.
& Voltage ±5%
Input
Voltage 24 to 120VAC/DC; 100 to 240VAC/DC
AC Line Frequency 50/60 Hz
Tolerance ±20%
Output
Type Solid state
Form NO, open during timing
Maximum Load Current 1A steady state, 10A inrush at 60°C
Minimum Holding Current 40mA
Voltage Drop ≅ 2.5V @ 1A
Protection
Circuitry Encapsulated
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 60°C / -40° to 85°C
Humidity 95% relative, non-condensing
Weight ≅ 2.4 oz (68 g)
Binary Switch Operation
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
Function Diagram
DELAY- ON-MAKE (ON-DELAY)
V = Voltage
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
R = Reset
= Undefined
Time