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© 2016 Littelfuse Protection Relays & Controls
Time Delay Relays
Delay-on-Break
www.littelfuse.com/tdb-tdbh-tdbl
Rev: 1-A-062116
TDB / TDBH / TDBL SERIES
Description
The TDB Series combines accurate digital circuitry with isolated,
10A, DPDT or SPDT contacts in an 8-pin or 11-pin plug-in
package. The TDB Series features DIP switch selectable time
delays ranging from 0.1-10,230 seconds in three ranges. The
TDB Series is the product of choice for custom control panel and
OEM designers.
Operation (Delay-on-Break)
Input voltage must be applied to the input before and during
timing. Upon closure of the initiate switch, the output relay is
energized. The time delay begins when the initiate switch is
opened (trailing edge triggered). The output remains energized
during timing. At the end of the time delay, the output
de-energizes. The output will energize if the initiate switch is
closed when input voltage is applied.
Reset: Reclosing the initiate switch during timing resets the time
delay. Loss of input voltage resets the time delay and output.
Features & Benefits
FEATURES BENEFITS
3 time ranges available
(0.1s to 2.8h)
Makes it versatile for use in many applications
Microcontroller based
Repeat Accuracy + / - 0.1% or 20ms, whichever is
greater; Setting Accuracy + / - 2% or 50ms,
whichever is greater
LED indication
(select models)
Provides visual indication of relay status
DIP switch adjustment Provides first time setting accuracy
Isolated output contacts Allows control of loads for AC or DC voltages
Relay Output, Delay-on-Break
Time Delay Relay
Wiring Diagram
L1 N/L2
L1 N/L2
8-PIN OCTAL SPDT
S1 = Initiate Switch
Relay contacts are isolated
11-PIN DPDT
*
*8-pin models UL listed when used in
combination with P1011-6 socket only.
Ordering Information
MODEL INPUT VOLTAGE DELAY RANGE (SEC) LED TYPE PLUG/OUTPUT FORM
TDB120AL 120VAC 1-1023 in 1s increments X Octal (8-pin) plug, SPDT
TDB120ALD 120VAC 1-1023 in 1s increments X 11-pin plug, DPDT
TDB12D 12VDC 1-1023 in 1s increments Octal (8-pin) plug, SPDT
TDB230AL 230VAC 1-1023 in 1s increments X Octal (8-pin) plug, SPDT
TDB24AL 24VAC 1-1023 in 1s increments X Octal (8-pin) plug, SPDT
TDB24DL 24VDC/ 28VDC 1-1023 in 1s increments X Octal (8-pin) plug, SPDT
TDBH120AL 120VAC 10-10230 in 10s increments X Octal (8-pin) plug, SPDT
TDBH120ALD 120VAC 10-10230 in 10s increments X 11-pin plug, DPDT
TDBL120AL 120VAC 0.1-102.3 in 0.1s increments X Octal (8-pin) plug, SPDT
TDBL120ALD 120VAC 0.1-102.3 in 0.1s increments X 11-pin plug, DPDT
TDBL24DL 24VDC/ 28VDC 0.1-102.3 in 0.1s increments X Octal (8-pin) plug, SPDT
If you don’t find the part you need, call us for a custom product 800-843-8848
8-PIN
11-PIN

Summary of content (2 pages)