Struthers-Dunn - Item # 388ACPSRX-30-120VAC, 388 Series - True Off Timer Relays

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Item # 388ACPSRX-30-120VAC 388 Series - True Off Timer Relays


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The 388 true off timers are square base, bladed products. Solid state circuitry combined with a magnetic latching relay allow this product to time when no power is applied. Contacts transfer when power is applied. Timing begins when power is removed. Contacts return to the home position at the end of the timing cycle. No external control switch is needed to initiate timing. The package on this series is typically socket mounted.

For Additional Configuration please contact the manufacturer.

388 Series - True Off Timer Relays

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388 Series - True Off Timer Relays - Dimensional Picture

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Specifications · Timing · Contacts · Coil · Dielectric Strength · Temperature · Life Expectancy · Miscellaneous

Specifications

Series

388

Type

VAC Operated

Nominal Input Voltage

120 VAC

Timing

Functions Available

True Off

Timing Range

0.1 to 10 s

Timing Adjustment

Knob

Timing Repeatability (Constant voltage and temperature)

3.0%

Reset Time maximum

150

Input Pulse Length minimum

50

Contacts

Contact Configuration

2PDT

Contact Material

Silver Alloy

Contact Rating

12 A

Contact Rating 120 / 240VAC Resistive

12 A / 12 A

Contact Rating 28VDC Resistive

12 A

Contact Rating Motor 120VAC

1/3 hp

Contact Rating Motor 240VAC

1/2 hp

Minimum Contact Load

500 mW

Contact Resistance, Initial

100 milliohms max at 6VDC, 1A

Coil

Coils Available

AC and DC

Transient Protection

Yes

Reverse Polarity Protection

Yes

Nominal Coil Power AC

1.5 VA

Nominal Coil Power DC

1 W

Input Voltage Tolerance - AC

85% to 110% of nominal

Input Voltage Tolerance - DC

80% to 110% of nominal

Duty

Continuous

Dielectric Strength

Across Open Contacts

500 Vrms

Between Mutually Insulated Point

1500 Vrms

Insulation Resistance

1,000 Mohms min at 500VDC

Temperature

Operating

-20 to 55 ºC
-4 to 131 ºF

Storage

-40 to 85 ºC
-40 to 185 ºF

Life Expectancy

Electrical (full load)

100,000

Mechanical (no load)

10,000,000

Miscellaneous

Mounting Position

Any

Mating Socket

SK-SQB11-DS

Enclosure

Opaque Polycarbonate

Weight

4.0 oz
113 g

 MORE IMAGES 

· 388 Series - True Off Timer Relays - Wiring Diagram

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  · 2D Right Side View


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