Solving your relay requirements since 1922
Amperite Co.
567 52nd Street
P.O. Box 329
West New York, NJ 07093
(800) 752-2329
www.Amperite.com
ST2 Series Solid
State
Interval (One-Shot)
Timer
… 100% solid state circuitry - no
moving parts
… CMOS digital timing circuitry
… Fixed or field adjustable delays
from milliseconds to hours
… 2 amperes continuous load current
(10 amperes available, consult factory)
… UL File # Pending
… CSA File #Pending
Timing Mode:
Upon application of power the load is energized and the time delay cycle is initiated. At
the end of the delay time the load is de-energized. Reset is accomplished by removing
input power.
Timing Diagram:
Contact Information:
Solid state switching device 1 form A; normally open series connection. Continuous
current rating 2 amperes. Maximum inrush 20 amperes. Voltage drop 2.5 volts RMS or
less @ 2 amperes. (For 10 ampere load current rating consult factory)
Timing Specifications:
Timing: Factory fixed, or .1 seconds to 100 hours in any of the ranges below. Timing is
set by user supplied resistor or potentiometer. Custom timing available.
Solving your relay requirements since 1922
Amperite Co.
567 52nd Street
P.O. Box 329
West New York, NJ 07093
(800) 752-2329
www.Amperite.com
Timing ranges:
.1 to 10 seconds
1 to 100 minutes
.2 to 20 seconds
10 to 1000 minutes
1 to 100 seconds
.1 to 10 hours
10 to 1000 seconds
1 to 100 hours
.1 to 10 minutes
Timing tolerance: fixed units +/- 10%
Timing repeatability: 2%
Timing cycle interrupt transfer: none
Outline Dimensions:
AC (60 Hz) and DC Input Voltages & Limits
Nominal
Minimum
Maximum
12V 10V 14V
24V 20V 28V
48V 41V 55V
110V 95V 125V
120V 105V 130V
230V 190V 255V
Solving your relay requirements since 1922
Amperite Co.
567 52nd Street
P.O. Box 329
West New York, NJ 07093
(800) 752-2329
www.Amperite.com
External Resistor Selection:
Wiring Diagrams:
Mechanical Information:
Enclosure 2 X 2 X 3/4 inch black plastic, epoxy sealed. Center hole mounting. Three or
five 1/4 inch quick connect male terminals
Ordering Information:
Definition of a part number for the Amperite ST2 Series Time Delay Relay:
Example:
Solving your relay requirements since 1922
Amperite Co.
567 52nd Street
P.O. Box 329
West New York, NJ 07093
(800) 752-2329
www.Amperite.com
A: Denotes nominal input voltage. Voltages available: 12V, 24V, 120V & 230V AC;
12V, 24V, 48V & 110V DC. Custom voltages are available.
B: Denotes type of input power required for operation: A = AC - Alternating Current; D
= DC - Direct Current.
C & D: Denotes range of adjustability by using an external resistor or potentiometer,
where C is the minimum timing and D is the maximum timing. Standard timing span is
100:1. For fixed timing units specify a single number.
E: Denotes unit of time delay: S=seconds; M=minutes; H=hours.
F: Denotes Amperite ST2 Series solid state, normally open time delay.
Solving Your Relay Requirements Since 1922
