388 Series - True Off Timer Relays
Timer / Sensor Relays
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.
Additional contact configurations and coil options are available – please use the RFQ/RFI tab above to submit your request.
Made in U.S.A.
Additional contact configurations and coil options are available – please use the RFQ/RFI tab above to submit your request.
Made in U.S.A.
| Items |
 /Asset/388_True_Off_Series.JPG 388ACPSRX-29 388 Series - True Off Timer Relays |
/Asset/388_True_Off_Series.JPG 388ACPSRX-30 388 Series - True Off Timer Relays |
/Asset/388_True_Off_Series.JPG 388CPSRX-35 388 Series - True Off Timer Relays |
/Asset/388_True_Off_Series.JPG 388CPSRX-36 388 Series - True Off Timer Relays |
/Asset/388_True_Off_Series.JPG 388ACPSRX-111 388 Series - True Off Timmer Relays |
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| Series | 388 | |||||||||
| Type | VAC Operated | VAC Operated | VDC Operated | VDC Operated | VAC/VDC Operated | |||||
| Nominal Input Voltage | 120 VAC | 120 VAC | 24 VDC | 24 VDC | 120 VAC/VDC | |||||
| Functions Available | True Off | |||||||||
| Timing Range | 0.6 to 60 s | 0.1 to 10 s | 0.1 to 10 s | 0.6 to 60 s | 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 | |||||||||
| 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 | |||||||||
| 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 | |||||||||
| Across Open Contacts | 500 Vrms | |||||||||
| Between Mutually Insulated Point | 1500 Vrms | |||||||||
| Insulation Resistance | 1,000 Mohms min at 500VDC | |||||||||
| Operating | -20 to 55 ºC-4 to 131 ºF | -20 to 55 ºC-4 to 131 ºF | -20 to 55 ºC-4 to 131 ºF | -20 to 55 ºC-4 to 131 ºF | -4 to 131 ºC-20 to 55 ºF | |||||
| Storage | -40 to 85 ºC-40 to 185 ºF | -40 to 85 ºC-40 to 185 ºF | -40 to 85 ºC-40 to 185 ºF | -40 to 85 ºC-40 to 185 ºF | -40 to 185 ºC-40 to 85 ºF | |||||
| Electrical (full load) | 100,000 | |||||||||
| Mechanical (no load) | 10,000,000 | |||||||||
| Mounting Position | any | |||||||||
| Mating Socket | SK-SQB11-DS | |||||||||
| Enclosure | Opaque Polycarbonate | |||||||||
| Weight | 4.0 oz113 g | |||||||||
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