Time Delay Relays
TSB SERIES
Dedicated • Delay-on-Break
Description
TheTSB Series is a totally solid-state, delay-on-break timing
module. TheTSB series is available with a fixed, external, or
onboard adjustable time delay. Time delays from 0.05 to 600
seconds, in 4 standard ranges, cover over 90 % of all OEM
and commercial appliance timing applications. The repeat
accuracy is ±± %. Operating voltages of ±4, 1±0, or ±30
V ac are available. TheTSB’s 1 A steady state, 10 A rated,
solid-state output is perfect for direct control of solenoids,
contactors, relays, lamps, buzzers, and small heaters. The
TSB series can be surface mounted with a single screw, or
snapped on a 35 mm DIN rail using the P10±3-±0 adapter.
Operation (Delay-on-Break)
Input voltage must be applied before and during timing. Upon
closure of the initiate switch, the output energizes. The time
delay begins when the initiate switch opens. 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.
Wiring Diagram
L1
N/L2
Reset: Reclosing the initiate switch during timing resets the
time delay. Loss of input voltage resets the output and the
time delay.
Features & Benefits
FEATURES
BENEFITS
Repeat accuracy + / - 2 %,
Factory calibration + / - 5 %
Analog circuitry
No moving parts to arc and wear out over time
and encapsulated to protect against shock,
vibration, and humidity
V = Voltage
S1 = Initiate Switch
UTL = Optional Untimed Load
L = Load
Totally solid state
and encapsulated
Meets almost all OEM and commercial
appliance timing applications
Wide time delay range
R
is used when external
1A steady, 10A inrush
solid state output
Provides 100 million operations in typical
conditions
T
adjustment is ordered.
Accessories
P1004-95, P1004-95-X Versa-Pot
Panel mountable, industrial potentiometer
recommended for remote time delay
adjustment.
P1023-6 Mounting bracket
The 90° orientation of mounting slots makes
installation and removal of modules quick and
easy.
Ordering Information
MODEL
INPUT VOLTAGE ADJUSTMENT
TIME DELAY
90s
MODEL
TSB422
TSB434
TSB632
TSB634
INPUT VOLTAGE
120 V ac
ADJUSTMENT
External
TIME DELAY
0.5 – 60s
5 – 600s
TSB2190
TSB222
TSB223
TSB41300
24 V ac
24 V ac
24 V ac
120 V ac
Fixed
External
External
Fixed
0.5 – 60s
2 – 180s
300s
120 V ac
Onboard
230 V ac
Onboard
0.5 – 60s
5 – 600s
230 V ac
Onboard
If you don’t find the part you need, call us for a custom product 800-843-8848
Littelfuse.com/tsb
© 2019 Littelfuse, Inc.
Rev: 121119
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