Pull wire switch EX ZS 73 HES series

single-poleexplosion-proofwatertight

• Ex zone 1 and 21 • Pull-wire unit made of stainless steel 1.4404, hard-coated housing, cover made of stainless steel 1.4404, screws A2 • Cold-resistant down to -40 °C • High degree of protection IP66 / IP67 • Watertight collar W for protection against penetration of dirt available • 2 contacts • Tractive force 120 N (counterweight of min. 12 kg to pretension anti-two-block switch) • For limiting the hoist height Applied standards EN 60947-5-1, EN IEC 60079-0, EN 60079-1, EN 60079-31 Enclosure aluminium die-cast, hard-coated, powder-coated, anthracite grey, similar to RAL 7016 Cover stainless steel 1.4404, powder-coated, signal yellow, similar to RAL 1003 Degree of protection for hazardous areas: IP65 (EN IEC 60079-0 + IEC/EN 60529) for non-hazardous areas: IP66/67 (IEC/EN 60529) B10d (10 % load) 2 million TM max. 20 years Contact material silver, gold-plated Switching elements 1 NC/1 NO contact or 2 NC contacts, type Zb Switching system slow action Connection cable BETAflam 145 flex Cable cross-section 4 x 0.75 mm² (incl. conductor ferrules) Rated impulse withstand voltage Uimp 4 kV Rated insulation voltage Ui 250 V Conventional thermal current Ithe T6: 6 A, T5: 3 A Utilisation category AC-15; DC-13 Short-circuit protection 6 A gG/gN fuse Mechanical life > 1 million operations Impact energy max. 7 J Ex marking L II 2G Ex d IIC T6/T5 Gb, L II 2D Ex tb IIIC T80 °C/T95 °C Db IECEx Ex d IIC T6/T5 Gb, Ex tb IIIC T80 °C/T95 °C Db