The Murphy MS2120 is a multi-purpose Tattletale® with dry contacts that can be used to make two circuits and break another when tripped. Operates from Magneto Ignition. The operating coil is intermittent duty and must be disconnected by an external circuit when tripped.

The MS2120 features a manual indicating reset type. The control circuit output contacts are NCG and NOG. Dry contacts normally wired in ground circuit. The latch type is energize to trip. The MS2200 is a replacement for 307, 307PH, and 224.
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