Product Description
Description: Delay on Make • Time Delay Relay • Input Voltage : 19-288 VAC/VDC • Timing Range: 1 - 1000 sec • Mounting : Base Mount • Contact Configuration: NO • Output Current: 1 Amp
| Product Information | Resources |
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| Specifications |
| Product Attribute | Attribute Value |
| Operating Voltage | 19-288 VAC/DC |
| Timing | Adjustable |
| Timing Range | 1-1000 sec |
| Timing Mode | Delay-On-Make - timing period set by external resistor. |
| Timing Range | 438US 1 to 1000 seconds in 1 second increments. 438US-1 2 to 2000 seconds in 2 second increments. |
| Timing Tolerance | ±10%. |
| Timing Variation | ±15% worst case at any combination of voltage and temperature. |
| Repeatability Of Timing Period | ±1% nominal. |
| Recycle Time | 50 milliseconds if output is ON, 200 milliseconds during a timing cycle while output is OFF. |
| Output Rating | 10 milliamperes to 1 ampere inductive with inrush current to 25 amperes for 8 milliseconds. |
| Output Voltage Drop in "ON" State | 4 volts maximum. |
| Leakage Current in "OFF" State | 0.6 mA @ 24V, 1.8 mA @48V, 5.4 mA @120V, 11.4 mA @ 240V. |
| Transient Protection | Maximum transient voltage protection is 6000 volts as delivered through a source resistance of 30 ohms with a maximum duration of 8.3 milliseconds. |
| Operating Temperature | -20°C to +85°C |
| Humidity | 95% condensing |
| Terminations | Four (4) .25 Faston type. |
| Series Features |
| Model No. 438US Universal Time Capsule ® Delay-On-Make Timer |
| Series Description: The model 438US (Universal Time Capsule) is an all Solid State timer providing Delay on Make control to any load operating from 19 to 288V AC or DC. The time delay is adjustable from 1 to 1000 or 2-2000 seconds depending on the model selected, and is obtained by connecting a fixed resistor or potentiometer across the middle terminals (10k per sec). When power is applied, the 438US remains in the off state. After the preset period has elapsed the timer switches on energizing the load. |