Limitex A Explosion proof position limit switches

Atex position limit switch for potentially explosive area applications
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Explosion-proof cross position limit switch. Sturdy and reliable, Limitex A is designed to control the movement of overhead travelling cranes, hoists and complex machine tools operating in potentially explosive areas.

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Features

  • Mechanical life of switches: 10 million operations.
  • Operation frequency: 3000/3600 operations/hour.
  • IP protection degree: Limitex AP is classified IP 65 / IP 66.
  • Extreme temperature resistance: -50°C to +55°C.
  • G20 cast iron and cross rod support made of galvanized aluminum. Internal components are made of materials that guarantee long mechanical life and continuous performance.
  • It features rugged external enclosure made of a special aluminum alloy with low copper and magnesium content or in AISI 316 stainless steel (optional) with compact dimensions to ensure reduced overall size.
  • All materials and components used are wear resistant and guarantee protection of the unit against water and dust.

Options

  • 4 snap action switches with 1NO+1NC contacts.
  • Cross rods with 4 maintained positions every 90°.

Certifications

  • CE marking.
  • Atex certification EN 60079-0:2009, EN 60079-1:2007, EN 60079-31:2009.
  • Conformity to Standards IECEx IEC 60079-0:2011, IEC 60079-1:2007-04 and IEC 60079-31:2008.

Manufactured by ARIET Di T. Cereda – Distributed by TER Tecno Elettrica Ravasi srl a socio unico.

GENERAL TECHNICAL SPECIFICATIONS

Operational ambient temperature -50°C/+55°C
IP protection degree IP 65 / IP 66
Operation frequency 3000 / 3600 operations/hour max
Insulation category Class I according to IEC 536
Attack speed Up to 3 m/s
Conic cable entries ½ " ÷ 1" UNI 6125 GK
½ " ÷ 1" NPT
Cylindrical cable entries M20 ÷ 32 x 1,5 ISO 965/1 and ISO 965/3 middle class
½ " ÷ 1" UNI/ISO228
Housing material Cast iron
Stainless steel AISI 316

TECHNICAL SPECIFICATIONS OF THE SWITCHES  

Rated thermal current 10A according to CEI EN 60947-5-1
Rated insulation voltage 300V∼ (CEI EN 60947-5-1)
Maximum operating voltage 500V∼
Nominal intensity 16A a 250V∼
Mechanical durability 10x106 operations
Terminal identification According to CENELEC EN 50013
Connections Screw connections (standard) or FASTON

Applications

Compenenti di comando e sicurezza per argani e paranchi
Winches - Hoists
Compenenti di comando e sicurezza per carroponti
Overhead travelling cranes - Gantry cranes
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Oil & gas