A U T O M A T I C    L I M I T   S W I T C H E S

ALL UNITS ARE U.L. AND C.S.A. RECOGNIZED. RATINGS ARE 25 AMPS RESISTIVE @ 240V, 22A @ 277V

125VA PILOT DUTY, FOR 100,000 CYCLES

ALL ARE 1 1/2" X 2" OVAL WITH 1 5/8" ON CENTER MOUNTING HOLES, HAVE 1/4" QUICK CONNECT TERMINALS AND DROP THROUGH A HOLE INTO THE AIRSTREAM 3/8" EXCEPT FLUSH MOUNT (FM) & THE DEEP CUT (DC) MODELS THAT EXTEND 3/4". UNITS SHOWN AS "OD" HAVE AN OPEN OR EXPOSED BI-METAL DISC. UNITS SHOWN AS "CD" HAVE A CLOSED OR SHIELDED DISC. CLOSED DISC RESPOND SLOWER THAN OPEN DISC TYPE AND ALLOW APPROXIMATELY 10 TO 15 DEGREES HIGHER OUTLET AIR FROM A DUCT HEATER BEFORE REACTING. INCORRECT REPLACEMENTS COULD BE A HAZARD!!! ALL OPEN ON RISE OF TEMPERATURE. UNITS WITH A(-3) OR LARGER DIFFERENTIAL ARE USUALLY USED IN HEATERS AND FURNACES. THOSE WITH SMALLER DIFFERENTIALS ARE FOR APPLIANCE USAGE.