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Fieldbus equipment

MTL Ex ic adaptor for live working Ex ic spurs

Crouse-Hinds series MTL F30 Ex ic Adaptor is an accessory to our F300 range of Megablock wiring hubs.  The F30 provides intrinsically safe Ex ic spur connections for fieldbus networks in Zone 2 hazardous areas. One F30 is used with each Megablock, to limit the voltage at the spurs to Ex ic levels. When connected to suitably certified fieldbus instruments, the spurs may be live-worked in accordance with normal intrinsic safety procedures. The F30 is completely transparent to all fieldbus communications.

The F30 is compatible with F304, F308 and F312 Megablock types, typically providing up to 12 Ex ic spurs per fieldbus segment. Up to two F30s and their associated Megablocks may be connected to a single segment, to allow the fieldbus trunk to be extended between junction boxes in the field.

Ex ic replaces the earlier Ex nL technique for energy-limited fieldbus networks, and brings the technique into line with formal intrinsic safety procedures.

Certifications and compliances

Hazardous Area Approvals:

  • Certification code: II 3G Ex nA IIC T4 Gc
  • Certification numbers: DEKRA ATEX 0129X;  IECEx DEK 13.0038X

Environmental ratings:

  • Operating temperature range: –40º to +70ºC 
  • Relative humidity: 0 to 95% non-condensing

Design features

  • Simple compliance with Ex ic certification requirements from control room to field
  • Use with F300 range of Megablocks and 918x-x2 range of fieldbus power supplies to provide Ex ic intrinsically safe spurs for FOUNDATIONTM Fieldbus networks
  • Architecture supports Ex nA, Ex d devices and Ex i devices on the same segment
  • Allows spurs to be live-worked in Zone 2 when connected to suitably certified field instruments
  • Compatible with FISCO and Entity certified fieldbus devices
  • Installs with Megablock in field junction box 
  • Supports long trunk cable lengths and heavily loaded fieldbus segments

Standard materials

  • Case: Polycarbonate
Specifications

Ordering Information

Part Number Description Hazardous Area Certifications *
F30 Ex ic Adaptor ATEX & IECEx Approved
* Select Certification Reports under the Resources tab for full list of certifications