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Overview

MICRO SWITCH BX Series Hazardous Location Limit Switches (Non Plug-in),side rotary (no lever included), 1NC 1NO SPDT momentary action, 20 mm conduit, gold-plated contacts.
The MICRO SWITCH BX enclosure is sealed for protection against corrosion, water, dust and oil as defined in NEMA 1, 3, 4, 6, and 13 and IP67 as defined in IEC 529. These enclosures also meet the European Hazardous Locations Designation: II 2 GD, Ex d IIC T6 Gb; 1 Ex d IIC T6 Gb; II 2 D Ex tb IIIC t85C Db. The entire series BX complies with the European Directive on Equipment and Protective Systems Intended for Use in Potentially Explosive Atmospheres (94/9/EC) commonly referred to as the ATEX Directive. Compliance with the Essential Health and Safety Requirements has been assured by compliance with EN50014 1997 and EN50018 1994. MICRO SWITCH BX with conduit types 1/2-14NPT, 3/4-14NPT also meet the North American Hazardous Locations Designation: Class I, Groups B, C and D; Class II, Groups E, F and G and comply with UL Standard: UL 894, CSA Standard: C22.2 No. 25-1966, C22.2 No. 30-M1986. The MICRO SWITCH BX is ideal for outdoor use or in adverse environments where a combination of explosion proof plus sealing requirements are needed. To comply with explosion proof requirements the BX has flame paths within the housing, which cool exploding gases below the ignition temperature before they reach explosive gases surrounding the housing. Flame paths on the BX are (1) an extended plunger between the switch cavity and head and (2) the cover-housing threads on the front of the switch.
BX4A3E Hazardous Area Limit Switches - Honeywell


Technical Specifications

Approvals Div 1 & 2, Class I Groups B, C, & D; Div 1 & 2, Class II Groups E, F, & G; II 2 G Ex d IIC T6 Gb; 1 Ex d IIC T6 Gb; II 2 D Ex tb IIIC T85C Db
Agency Approvals and Standards UL, CSA, ATEX (CE), IEC Ex, INMETRO, KOSHA, NEPSI, EAC (Gost-R)
Series Name BX Switches
Availability Global
Operating Force (OF) 0,45 Nm [4 in lb] max.
Pretravel (PT) 15° max.
Differential Travel (DT) 5° max.
Overtravel (OT) 60° min.
Product Type MICRO SWITCH Weather-Sealed, Explosion-Proof Limit Switches/European and Global Approvals
Actuator Side Rotary
Supply Voltage 600 Vac and 250 Vdc max.
Lever Type
Circuitry 1NC 1NO SPDT Snap Action, Double-Break
Ampere Rating 10 A (Thermal)
Housing Material Aluminum
Termination Type 20 mm Conduit
Housing Type BX Non Plug-in
Sealing IP67; NEMA 1, 3, 4, 6, 13
Operating Temperature -40°C to 70°C [-40°F to 158°F]
UNSPSC Code 39122213
UNSPSC Commodity 39122213 Limit Switch
Sealed Explosion-proof
Contact Material gold-plated contacts

Technical Specifications

Approvals Div 1 & 2, Class I Groups B, C, & D; Div 1 & 2, Class II Groups E, F, & G; II 2 G Ex d IIC T6 Gb; 1 Ex d IIC T6 Gb; II 2 D Ex tb IIIC T85C Db
Agency Approvals and Standards UL, CSA, ATEX (CE), IEC Ex, INMETRO, KOSHA, NEPSI, EAC (Gost-R)
Series Name BX Switches
Availability Global
Operating Force (OF) 0,45 Nm [4 in lb] max.
Pretravel (PT) 15° max.
Differential Travel (DT) 5° max.
Overtravel (OT) 60° min.
Product Type MICRO SWITCH Weather-Sealed, Explosion-Proof Limit Switches/European and Global Approvals
Actuator Side Rotary
Supply Voltage 600 Vac and 250 Vdc max.
Lever Type Lever Not Included - Reference Lever Required Accessory
Circuitry 1NC 1NO SPDT Snap Action, Double-Break
Ampere Rating 10 A (Thermal)
Housing Material Aluminum
Termination Type 20 mm Conduit
Housing Type BX Non Plug-in
Sealing IP67; NEMA 1, 3, 4, 6, 13
Operating Temperature -40°C to 70°C [-40°F to 158°F]
UNSPSC Code 39122213
UNSPSC Commodity 39122213 Limit Switch
Sealed Explosion-proof
Contact Material gold-plated contacts

Documents

TITLE DOCUMENT TYPE LANGUAGE SIZE
MICRO SWITCH BX/BX2 Series Explosion-Proof Limit Switches Datasheet English 6MB
PK 80148: BX Series Explosion-Proof Limit Switch Installation Instructions English 13MB
50083427: MICRO SWITCH BX Series Explosion-Proof Limit Switch Installation Instructions English 4MB
MICRO SWITCH Hazardous Location Approvals Matrix Hazardous Location Approvals Documentation English 518KB
Guide to Hazardous Location Approvals: MICRO SWITCH Hazardous Area Limit Switches Hazardous Location Approvals Documentation English 2MB
Oil and Gas Brochure Brochure English 4MB
Sensors and Switches in Oil Rig Applications Application Note English 7MB
Sensors and Switches in Valves and Flowmeters Application Note English 2MB
Industrial Product Line Card Line Card/Selection Chart English 2MB
MICRO SWITCH Hazardous Area Switches Brochure Brochure English 27MB
White Paper: How Switches Can Stop Machines from Going Boom White Paper English 7MB
Technical Note: Electrical Components within Hazardous Location Environments Application Note English 122KB

Product Features

  • UL, CSA, ATEX (CE), IEC Ex, INMETRO, KOSHA, NEPSI, EAC (Gost-R) approvals
  • Sealing - applicable portions of IP67 and NEMA 1, 3, 4, 6, and 13
  • Diverse conduit selection for wide range of applications
  • Compatible with LSX
  • Tracking interchangeability with MICRO SWITCH ML-E1 and HDLS
  • Variety of heads and non-sparking actuators
  • 10 A continuous carry electrical rating
  • Choice of silver or gold contacts
  • Internal grounding screw

Applications

  • Control valves and actuators
  • Offshore drilling
  • Grain elevators
  • Petrochemical plants
  • Chemical plants
  • Waste treatment
  • Paint booths
  • Mining conveyors
  • Pulp and paper coating
  • Hazardous waste handling

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