388 Series - Time Delay Relays
Timer / Sensor Relays
The 388 timers are square base, bladed versions of time delay relays. On delay, off delay and interval functions are all available with either AC or DC inputs. On delay and interval products can have up to three poles. Off delays have two poles. The timing circuit is oscillator based. Fixed time and externally adjustable versions. Both socket and flange mount versions are available.
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/388TD_Series.JPG 388ACPSOX-1 388 Series - Time Delay Relays |
/Asset/388TD_Series.JPG 388ACPSOX-2 388 Series - Time Delay Relays |
/Asset/388TD_Series.JPG 388ACQSOX-1 388 Series - Time Delay Relays |
/Asset/388TD_Series.JPG 388ACQSOX-2 388 Series - Time Delay Relays |
/Asset/388TD_Series.JPG 388CPSOX-1 388 Series - Time Delay Relays |
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| Series | 388 | |||||||||
| Type | On delay plug-in | On delay plug-in | On delay surface mount flange style | On delay surface mount flange style | On delay plug-in | |||||
| Nominal Input Voltage | 120 VAC | 120 VAC | 120 VAC | 120 VAC | 24 VDC | |||||
| Functions Available | On-delay, Off-delay, Interval | |||||||||
| Timing Range | 0.1 to 10 s | 1.0 to 120 s | 0.1 to 10 s | 1.0 to 120 s | 0.1 to 10 s | |||||
| External Resistor | 20,000 Ω/s | 20,000 Ω/s | 20,000 Ω/s | 20,000 Ω/s | 16,000 Ω/s | |||||
| Timing Adjustment | Knob or external R | |||||||||
| Timing Repeatability (Constant voltage and temperature) | 0.1% | |||||||||
| Reset Time maximum | 150 | |||||||||
| Input Pulse Length minimum | 50 | |||||||||
| Contact Configuration | 2PDT, 3PDT | |||||||||
| 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 | 2.75 VA | |||||||||
| Nominal Coil Power DC | 2 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 | |||||||||
| Storage | -40 to 85 ºC-40 to 185 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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