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Explosionproof, Dust-Ignitionproof. Ideal for installation in chemical and petrochemical plants, refineries and other process industries
Factory sealed switches are designed to a UL Standard so that any arcing devices are contained within an explosionproof labyrinth switch (standard switch and sealing chamber on select models).
20 Amp 4-way and all 30 Amp models utilize a switch enclosed in separate sealing chamber. Smooth double-face, accurately ground surfaces on sealing chamber flange mate with cover and body to provide positive flame-tight construction
1/2#8221; and 3/4#8221; 1-gang units suitable for Class I, Group B, in addition to Class I, Groups C and D; Class II, Groups E, F and G; and Class III
Sealing chamber has prewired factory sealed pigtail leads to switch
Enclosures have external mounting lugs for ease of mounting
Smooth, rounded integral bushing in each hub protects conductor insulation
Enclosures furnished with internal ground screw
Corrosion resistant, strong stainless steel hex head cap screws attach cover/body/sealing chamber assembly for approved flame-tight construction
Class I, Division 1 and 2, Groups B, C, D; Class II, Division 1 and 2, Groups E, F, G; Class III; NEMA 3, 7 BCD, 9EFG
Standard Materials
Malleable iron body and covers. Copperfree (4/10 of 1% max.) aluminum sealing chamber (on select models). Nylon 6/6 handle. Corrosion resistant stainless steel nameplate mounting bracket (optional)
Standard Finishes
Tumbler switches have a triple-coat finish (1) zinc electroplate, (2) chromate, and (3) epoxy powder coat
Option Materials
1- or 2-gang copperfree (4/10 of 1% max.) aluminum bodies and covers available. See catalog pages for details
Nameplate Mounting Bracket
Make circuit description/identification easy and eliminate costly field installation (drilling/tapping) to accommodate circuit identification nameplates by using our bracket accessory. See catalog.