Brochure

© 2016 Littelfuse Protection Relays & Controls
Time Delay Relays
Dedicated - Delay-on-Break
www.littelfuse.com/
Rev: 1-A-062116
www.littelfuse.com/tdub
Specifications
Time Delay
Range* 0.1 - 102.3s in 0.1s increments
1 - 1023s in 1s increments
0.1 - 102.3m in 0.1m increments
Repeat Accuracy ±0.5% or 20ms, whichever is greater
Setting Accuracy ≤ ±2% or 20ms, whichever is greater
Reset Time ≤ 150ms
Initiate Time ≤ 20ms
Time Delay vs. Temperature
& Voltage ≤ ±5%
Input
Voltage/Tolerance 24 to 240VAC, 12 to 24VDC /±20%
AC Line Frequency/DC Ripple 50/60 Hz / ≤ 10%
Power Consumption AC ≤ 2VA; DC ≤ 1W
Output
Type Solid state
Form NO, closed before and during timing
Rating 1A steady state, 10A inrush at 60°C
Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A
Off State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA
Protection
Circuitry Encapsulated
Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface
Insulation Resistance ≥ 100 MΩ
Polarity DC units are reverse polarity protected
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)
*For CE approved applications, power must be removed from the unit when a switch position
is changed.
TDUB SERIES
Add the value of switches in the ON position
for the total time delay.
Adjustment Switch Operation
Adjustment Switch Operation
Function Diagram
DELAY-ON-BREAK (OFF-DELAY)
V = Voltage
S1 = Initiate Switch
NO = Normally
Open Contact
NC = Normally
Closed Contact
TD = Time Delay
t = Incomplete
Time Delay
R = Reset
= Undefined
Time