Dwyer H3S-1ST-DRAIN : Explosion-Proof Differential Pressure Switch with 316 stainless steel wetted parts, 10 to 180 in. w.c. adjustable range, SPDT snap-action switch, UL/CSA terminal block, and explosion-proof drain for condensate removal in hazardous location applications.
H3S = 316 Stainless Steel pressure chamber with fluoroelastomer diaphragm
1 = Adjustable range 10 to 180 in. w.c.
S = SPDT snap-action switch
T = UL/CSA-approved internal terminal block
-DRAIN = Explosion-proof drain that allows condensate to be drained from the enclosure (NEMA 3/IP54 instead of NEMA 4X/IP56)
