Time Delay Relays
Dedicated - HVAC
TSA141300
Anti-Short Cycle, Solid State Timer
Description
The TSA141300 utilizes unique circuitry to provide random start
and lockout delay in one small, rugged, inexpensive package.
When connected as shown, the TSA141300 in a multiple unit
situation, prevents all units from starting at one time with
its random start feature. The TSA141300 also prevents the
compressor from recycling rapidly which could result in a lock
rotor condition. This lockout delay is initiated at the end of each
operation of the compressor. A momentary loss of power would
also initiate the lockout delay.
Operation
Random Start:
With the thermostat closed, when line voltage
is applied to system, a time delay is initiated. At the end of this
delay, the compressor relay will be energized. (Random Start
delay is equal to lockout delay.)
LINE
THERMOSTAT
AUX
CONTACT
Wiring Diagram
COMPRESSOR
RELAY
OVERLOAD
Anti-Short Cycle:
At the end of each cycle, when the
thermostat opens, a lockout delay is initiated which prevents
re-energization of the compressor relay during this period. If
the thermostat is closed after the time delay is completed, the
compressor relay will energize Immediately.
Loss of Power:
If there is a momentary loss of power, the
lockout will again be initiated preventing the compressor relay
from energizing for the duration of the delay.
R
3
1
2
Features & Benefits
JJ
Lockout Delay—prevents rapid recycling of compressor in
air conditioning, refrigeration, and heat pump equipment
Random Start Delay—provides staggered start up of
multiple units
Fast response time
All Solid State with Encapsulated Circuitry
JJ
JJ
JJ
Specifications
Time Delay
Type
Repeat Accuracy
Tolerance
Time Delay vs. Temperature
Input
Voltage
Tolerance
AC Line Frequency
Output
Type
Maximum Load Current
Voltage Drop
Protection
Transient
Dielectric Breakdown
Insulation Resistance
Factory fixed 5 minutes
± 5% under fixed conditions
Factory calibration: ± 15%
± 10% max.
120 volts AC
± 20% of nominal
50/60 Hz
Solid State
1 ampere steady state, 10 amperes inrush
at 60°C
2.5 volts typical at 1 ampere
Protected
Greater than 1500 volts RMS
100 megohms min.
TH
CR
Mechanical
Mounting
Package
Termination
Dimensions
Environmental
Operating/Storage
Temperature
Humidity
Surface mount with one #8 or #10 screw
Molded housing with encapsulated circuitry
0.25 in. (6.35 mm) male quick connect
terminals
H
50.80 mm (2.0”);
W
50.80 mm (2.0”);
D
30.70 mm (1.21”)
-40°C to +80°C/-40°C to +85°C
95% relative, non-condensing
Function Diagram
RANDOM START/LOCKOUT DELAY
V = Input Voltage
TH = Thermostat
CR = Compressor
Relay
TD = Time Delay
R = Reset
Rev: 1-A-062716
© 2016 Littelfuse Protection Relays & Controls
www.littelfuse.com/tsa141300
www.littelfuse.com/
