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
ST1 Series Solid
State
Delay-On-Make
Timers
… 100% solid state circuitry - no moving
parts
… Two terminal series connection to load
… Fixed or field adjustable delays from
milliseconds to hours
… Up to 1 ampere continuous load current
… CMOS digital circuitry
… UL File #E96739(M)
… CSA File #LR62586
Timing Mode:
Delay on operate begins upon application of input power. The load is energized at the end
of the delay period and remains so until input power is removed.
Timing Diagram:
Contact Information:
Solid state switching device 1 form A, normally open series connection. Continuous
current rating 1 ampere. Maximum inrush 10 amperes. Minimum load current 5
milliamperes. Voltage drop typically 2.5 volts RMS @ 1 ampere.
Environmental Information:
Temperature Range: -40° C to +65° C (-40° F to +149° F)
Timing Specifications:
Timing: Factory fixed, or .1 seconds to 100 hours in any one of
eight ranges. Timing is set by user supplied resistor or potentiometer.
*Timing ranges:
.1 to 10 seconds
.2 to 20 seconds
1 to 100 seconds
10 to 1000 seconds
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
.1 to 10 minutes
1 to 100 minutes
10 to 1000 minutes
.1 to 10 hours
1 to 100 hours
*See External Resistor Selection Graph for specific resistor value.
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:
* Note: use appropriate timing scale in accordance with Timing ranges specified above.
Wiring Diagrams:
Mechanical Information:
Enclosure 2 x 2 x 3/4 inch black plastic, epoxy sealed. Center hole mounting. Two or
four 1/4 inch quick connect male terminals.
Ordering Information:
Ordering Information: Definition of a part number for the Amperite ST1 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: 12, 24, 48, 120, and 230 volts AC;
12, 24, 36, 48, and 110 volts DC. For other voltages consult factory.
B: Denotes type of input power required for operation
A = AC - Alternate Current
D = DC - Direct Current
C&D: Denotes range of adjustability 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 ST1 Series solid state, normally open time delay.
Solving Your Relay Requirements Since 1922
