Appleton™ EFS Non-Sealed Tumbler Switches

Appleton

Appleton™ EFS Non-Sealed Tumbler Switches

Appleton

Appleton™ explosionproof, dust-ignitionproof EFS Series non-sealed tumbler switches are designed to prevent arcing of enclosed switches in ignitable atmospheres during connect and disconnect operation of lighting and light power loads. They are designed for use in classified areas where ignitable vapors, gases or highly combustible dusts are present such as chemical and petrochemical plants, refineries and other process industries.

Specifications

NEC Certifications and Compliances
Class I, Division 1 and 2, Groups C, D; Class II, Division 1 and 2, Groups E, F, G; Class III; NEMA 7CD, 9EFG
Standard Materials
Malleable iron body and covers. 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. Eliminates costly field installation (drilling/tapping) to accommodate circuit identification nameplate. Pre-drilled holes in bottom or middle of bracket. Brackets fit side-by-side on 2-, 3- and 4-gang boxes and 3-devices. See catalog pages for details

Features

  • Explosionproof, Dust-Ignitionproof. Ideal for installation in chemical and petrochemical plants, refineries and other process industries
  • 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
  • 20 Amp and 30 Amp units available for use with 120-277 Vac
  • Smooth ground mating surfaces assure flame-tight joint between cover and mounting enclosure
  • Stainless steel hex head cap screws for attaching cover to mounting enclosure
  • Choice of front-operating or side rocker arm handle; each may be locked in ON or OFF position
  • Each handle has close-tolerance threaded stainless steel shaft to meet explosionproof requirements
  • Enclosures furnished with internal ground screw

Documents & Drawings