This is a genuine McDonnell & Miller No. 5 automatic reset electric switch assembly (Part No. 110300) designed for use with the Series 93, 193, 94, and 194 low water cut-off and pump controllers.

Features & Specs
Automatic reset snap switch for safety applications
Dual SPDT (Single Pole Double Throw) switch configuration
Electrical Rating: 115 or 230 VAC, 345 VA
Requires use of copper wire only for limit control
Manufacturer: ITT Fluid Technology Corporation, Chicago, IL