Item # EXDQ, Limit Switches On Century Instrument Co.

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	Item # EXDQ, Limit Switches

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EXDQ switch is NEMA-7 explosion-proof Micro-switch in cast aluminum housing. EXDQ is DPDT rated at 10 amps at 125 or 250 vac, 0.3 amps at 125 vdc, 0.15 amps at 250 vdc.

Specifications · Limit Switch Settings

Specifications

Dimension B₃		12 in

Manufacturing Standard		NEMA-7

Switch Type		DPDT

Housing Material		Cast Aluminum

Limit Switch Settings

At time of shipment from the factory, the limit switches are set to give a signal at full valve open and closed positions. On "rate-set" valves, that is valves on which the limit stops are set to limit the valve opening so as to regulate flow, the resetting of the "valve open" switch is extremely simple.

After the limited valve open positions has been established, it is simply necessary to loosen the lock-nut on the switch actuator arm - move the adjusting screw upward until the upper switch trips, then re-tighten the lock-nut.

Item # EXDQ, Limit Switches

Dimension B3

Manufacturing Standard

Switch Type

Housing Material

Dimension B₃