Description

 

The model 437 is a Delay-on-Make timer which operates any DC device such as a relay, solenoid or lamp. When the DC voltage is applied, the 437 remains in the off state permitting less than 3 milliamperes to flow through the load. When the delay period has elapsed, the timer switches on permitting full current to flow through the energized load. The load remains energized as long as the DC power is applied. Voltage must be removed for at least 50 milliseconds in order for the 437 to reset. Polarity must be observed during wiring.

 

Type	Function	Industries
Timer	Delay On Make	HVAC, Transportation, General Machinery, Elevator-Escalator, Lighting

Specifications

Operating Voltage	Any voltage from 5-200V DC.
Output	20 milliamperes to 2 Amperes inductive. Inductive loads must have protective snubber diode.
Timing Mode	Delay-on-Make
Timing Ranges	Factory fixed from 50 milliseconds to 600 seconds.
Timing Tolerance	+/- 10%
Timing Repeatability	+/- 5% at stabilized operating voltage and temperature.
Transient Protection	8 Joules.
Operating Temperature	-20 deg C to 85 deg C.

Documents and Downloads

Document	File Type	File Size	Download
Model No. 437 Datesheet	PDF	204 KB

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17 Raritan Road, Oakland, NJ 07436 | 800-526-5376
Created By: G.Dezines