Solid state timer for sealed contact relay

Details Solid state timer for sealed contact relay Solid state timer for sealed contact relay

1978-04-27

1979-06-19

Pitts, Harold I.

Communications: electrical

Systems

Timer control

3403094, G08B 100

Patent

active

041588363

ABSTRACT:
A sealed contact relay for use in industrial control systems includes a solid state digital programmable timer which controls the operation of a timed relay coil. An instantaneous relay coil is also included and each of the coils operates two sealed contact switches which are contained in field replaceable cartridges. A timing light indicates the state of the timed relay coil and it blinks while the digital programmable timer is timing. The timer mode and the duration of the timed interval are selected by placing a uniquely molded insert into a four-pole switch receptacle.

REFERENCES:
patent: 3407312 (1968-10-01), Pearse
patent: 3809965 (1974-05-01), Groth

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