Fox Atex Explosion proof rotary limit switches

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Explosion proof rotary limit switch used to control and measure the movement of industrial machines in areas with potentially explosive atmospheres.

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It consists of a gear motor that transfers movement to the cams and to the other movement detection devices through a primary input reduction stage (worm gear and helical toothed gear) and one or more secondary output stages (pairs of straight toothed gears).
Accurate adjustment of cams by means of screws.
Positive opening NC contacts for safety functions.
Mechanical life of switches: up to 10 million operations.
IP protection degree: Fox Atex is classified IP 65 / IP69 or IP 65 / IP 69K (in the version with the stailess-steel cage).
Extreme temperature resistance: from -25°C to +75°C.
Featuring polyamide 66 (PA66) housing and EPM gasket, ensuring an IP 65 / IP 69 degree of protection against dust.
Suitable for use in potentially explosive environments (Category II 3D (Zone 22)) in the version with the stainless-steel cage and in the version without the cage with protection at the customer’s responsibility.
It features transmission and gear driving shafts made of stainless steel AISI 430F or AISI 303, worm gear transmission shaft rotating on ball bearings, self-lubricating technopolymer gears and driving bushes, technopolymer base and cover.
All materials and components used are wear resistant and guarantee protection of the unit against water and dust.

Revolution ratios from 1:3 to 1:2870, achieved by combining different secondary output stages.
Snap action switches with 1NO+1NC contacts or slow action switches with 1NC contact.
It can be equipped with a cam set (with up to 4 switches).
Dedicated cable glands or connectors.
Explosion proof rotary limit switch available with flanges, pinion gears and couplings.
Plates with universal adapters to replace existing systems.

GENERAL TECHNICAL SPECIFICATIONS

Version	With the cage	Without the cage
Ambient temperature	Storage -25°C/+75°C
Ambient temperature	Operational -25°C/+75°C
ATEX Category	II 3D (zone 22)	II 3D (zone 22) (with protection at the customer’s responsibility)
Protection	Ex tc
IP protection degree	IP 65 / IP 69K	IP 65 / IP 69
Insulation category	Class II
Rotation speed	Revolution ratios ≥1:16: max. 800 rpm
	Revolution ratios <1:16: max. 200 rpm
	Revolution ratios =1:50 and 1:100: max. 1500 rpm
Cable entry	Cable gland M20
	Cable gland M20+M16
	Cable gland M20+M20
Shafts	Stainless steel AISI 430F
Shafts	Stainless steel AISI 303