W-34.243.0008.0

DISCRETE NON-INCENDIVE BARRIER 

WT-NIC-W904-35VDC-75mA 



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Description 

 

Discrete Non – Incendive Barriers are used for Hazardous Locations.  

 

This module is designed to provide isolation to enable circuits beyond the module to be rated as 

non-incendive. It is typically used on “discrete” inputs to PLC’s to allow the use of non-explosionproof wiring and end devices in Class I Division 2 Groups, A, B, C and D Hazardous Locations. The barrier is suitable for use with all gases when located outside of the hazardous location and with gases having ignition temperatures of 160o C or higher when located in the Class I Division 2 Hazardous Locations. The barrier must be located in an enclosure suitable for the location. The use of a weatherproof enclosure is recommended when the barrier is located in the Hazardous Area. 

 

Features: 

 

  • Provides non-incendive isolation for circuits up to 24 VDC 

  • Eliminates need for expensive explosion proof enclosures for End Field Devices 

  • Eliminates costly wiring normally required in Class I, Division 2 locations. 

  • DIN rail mountable terminal block style housing 

 

Typical Applications: 

Class I, Division 2 Locations in: 

  • Oil Refineries 

  • Gas Processing Plants  

  •  Oil and Gas Production Facilities 

  • Petrochemical Plants 

  • Pipeline Facilities 

  • Sewage Treatment Facilities 

 

Product Stage: Mass Production  

  • SPECIFICATION
  •  ✥ 

Technical Information: 

Materials: 

Insulating Body:          Polyamide 6.6, UL94 V-2 

Clamping Body:          Nickel plated copper alloy 

Clamping screw:         Dichromated Steel 

Color:                          Grey 

 

 

Ratings: 

Rated Voltage:                                      

24 Volts DC 

Maximum Voltage:                               

35 Volts DC 

Maximum Current:                               

75 mA 

Internal Resistance:                              

470 Ohms+/-1% 

Hazardous Location Rating:                 

Class I Div. 2 Groups A, B, C, & D 

Temperature Code:                              

T3C (160o C)