Skuttle 24 volt current sensing relay. This relay will switch on a 24 vac (1 amp, 24 watt max) load when 4 amps of (blower motor) current is sensed. Dimensions 2-3/4" wide x 1-5/16" high x 1-1/16" thick.

A50 Installation Instructions (2 Pages, 195k pdf)

A50 Specification (1 Page, 686k pdf).

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