004764 Issue 5 GSX SERIES MICRO SWITCH Safety Limit Switches for Hazardous Locations DESCRIPTION FEATURES When the application requires a safety Safety limit switch typically suitable limit switch for hazardous environmental for global hazardous/explosive areas which potentially include explosive environments with cULus, ATEX, CE, gas, dust, or fibers, Honeywell offers GSX IEC Ex, INMETRO, and KOSHA/KTL Series safety limit switches that provide certifications a preferred solution for the hazardous POTENTIAL APPLICATIONS Up to four normally closed (NC) environments while monitoring gate Access panels, gates, guards, or doors on contacts per switch or a combination positions. The GSX Series of safety limit machinery for: of NC and normally open (NO) switches incorporate the same internal contacts per limit switch Grain elevators and grain processing contact block as the Global Safety Limit facilities NC contacts are positive opening Switch (GSS Series). All normally closed for positive mode monitoring of gates Hydrocarbon and ethanol facilities contacts are positive opening . A wide variety of contact blocks and NO contacts available for signal Chemical processing actuator head combinations solve many circuits or negative mode monitoring Paint booths applications. of gates Pharmaceutical processing The GSX Series safety limit switches Red switch body for easy safety are certified for weather-sealed Power generation plants recognition indoor and outdoor environments and Pulp and paper processing Choice of actuator head types: top pin are also certified for continuous or plunger, top roller plunger, top roller intermittent use in hazardous/explosive lever, or side rotary environments through a number of Different threaded conduit options for different independent agencies for global global applications applications. PORTFOLIO Honeywell offers other safety limit switches which include the non- DIFFERENTIATION contact safety switches (FF Series) Up to four electrically independent and cable/rope-pull safety contacts (Zb) per limit switch for switches (1CPS & 2 CPS monitoring of gates Series). Honeywell safety Designed and agency evaluated for interlocking switches include safety functions up to and including a the metal-body EN50041 GK Series, safety integrity level 3 (SIL3) metal-body solenoid (trapped key) GKL/R Series, the plastic-body Safety industrial limit switch globally EN50047 GKE Series, miniature certified for hazardous/explosive plastic-body GKM Series, and plastic- environments and environmentally body GKN Series. sealed For other hazardous location Gold-plated contacts available applications, Honeywell offers a wide for integrity of switch contacts in range of limit switches in different hostile environments with low energy size packages and hazardous applications environments. These limit switches Side rotary actuator head incorporates include the BX/BX2 Series, CX Series, dual bearing design for increased EX Series, LSX Series, GXS Series, and mechanical life 14CE100 Series.SAFETY LIMIT SWITCHES FOR HAZARDOUS LOCATIONS, GSX SERIES TABLE 1. SPECIFICATIONS CHARACTERISTIC PARAMETER Description GSX Series safety limit switches for hazardous areas (explosive environments) Agency certifications See Table 3 Housing material Electrostatic epoxy coated aluminum body and zinc actuator heads Actuator heads Side rotary with various lever options, top pin plunger, top roller plunger, top roller lever Conduit/electrical connection 0.5-14 NPT, 20 mm, PG 13,5, G1/2 (PF1/2) 1NC/1NO snap action, slow action BBM, or slow action MBB 2NC slow action 2NO slow action Contact/switch options and 2NC/2NO snap action, slow action BBM 1 types 2NC/1NO slow action BBM 3NC/1NO slow action BBM 4NC slow action Contact design Double break, electrically separated (Zb) 2NC/2NO snap action, each pole requires same polarity (Za) Contact material Silver alloy (standard), gold-plated (optional for low energy applications) Snap action contacts: AC-15, A600 DC-13, Q300 Utilization category 3 Slow action contacts : AC-15, A300 DC-13, Q300 Rated operational voltage (Ue) 120 Vac, 240 Vac, 600 Vac, 250 Vdc Rated operational current (Ie) 6 A, 3 A, 1.2 A, 0.27 A Thermal current (Ith) 10 A Rated insulation voltage (Ui) 300 V, 600 V Rated impulse withstand 2500 V voltage (Uimp) Short circuit protection device Class J fuse (10 A/600 V) (SCPD) Pollution degree 3 Environmental sealing IP67 NEMA 1, 3, 4, 12, and 13 Operating temperature -40C to 70C -40F to 158F Shock 50 g per IEC 60068-2-27 Vibration 10 g per IEC 60068-2-6 MCTF (Mechanical life) >1,000,000 cycles with single-sided confidence limit of 100% MCTF (Electrical life) >25,000 cycles with single-sided confidence limit of 100% 2 SIL capability SIL3 capable with HFT =1, SIL2 capable with HFT =0 with reference to IEC61508-2:2010 Proof test interval 1 year 1. All normally closed contacts are positive opening . 2. HFT (Hardware Fault Tolerance). 3. Slow action 1NC/1NO contacts: AC-15, A600 DC-13, Q300 TABLE 1. ELECTRICAL SPECIFICATIONS DESIGNATION AND UTI- RATED OPERATIONAL CURRENT IE (A) AT RATED OPERATIONAL VOLTAGE UE (V) LIZATION CATEGORY 24 V 120 V 240 V 380 V 480 V 500 V 600 V AC-15 A300 6 A 3 A AC-15 A600 6 A 3 A 1.9 A 1.5 A 1.4 A 1.2 A DC-13 Q300 2.8 A 0.55 A 0.27 A Gold-plated contacts 1 V 10 mA min. 50 V 100 mA max. 2 sensing.honeywell.com