437-110-1A

The 437-110-1A is a Delay-On-Make Timing Module with 0.1 to 1 seconds time range and solder terminals. This 437-series through-hole mount in-line delay-on-make timing module was developed for the telephone industry to solve the problem of slowing down the pick-up time of one relay while another was being energized from the same signal. Ease of installation permits to be connected in either leg of the relay or load circuit. When a DC operating voltage is applied only a small amount of current is permitted to flow through the load circuit. At the end of the delay period, the timer turns on and energizes the load circuit. To re-cycle, remove the operating voltage for at least 50 milliseconds the re-apply. Transient protection with 1000V for durations up to 10 milliseconds will not destroy the timer. Severe transients may cause the timer to turn on prior to the end of the fixed delay period.

• -20 to 85°C Operating temperature range

Applications

Industrial

Warnings

Inductive loads prevent a very high resistance to the output switch at the instant of turn and may not latch. To assure turn-on connect a resistor across load circuit that output switch will turn on.