NAR 8258 Railway Pressure Switch

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  • Railway Railway

Main features

  • Measuring accuracy 0.3 %
  • 1 or 2 PNP
  • Parametrisation via smartphone App (Android)
  • Switching current up to 400 mA
  • Dielectricl strength: 710 VDC, meets EN 50155 (Railways)
The pressure switch NAR 8258 with 1 or 2 switching outputs and increased accuracy of 0.3 % was specifically designed for railway vehicles (EN 50155) and has a long-term stable thin-film-on-steel sensor cell. The wide temperature range from -40°C to +85°C and the triple overpressure protection make the NAR 8258 the ideal choice for railway vehicles in rough environmental conditions.

Technical Data

More Information
Product code 8258
Name NAR
Designation Railway Pressure Switch
Product category

Electronic pressure switches

Measuring range 0 ... 6 to 0 ... 600 bar 0 ... 100 to 0 ... 7500 psi
Measuring principle Thin-film-on-steel
Approval / conformity EN 50155 (Railway) EN 45545-2 (Fire protection) EN 61373 (Shock, vibration) EN 50121-3-2 (EMC)
Accuracy @ 25°C typ. ± 0.3 % FS typ.
Output signal Switching output 1 or 2 PNP
Electrical connections M12x1
Pressure connections G1/4" m; G1/4" m with integrated damping; G1/4" m (Manometer); 1/4"NPT m; 7/16"-20UNF m, SAE4 (J1926); R1/4" m, DIN2999; M10x1 m, DIN EN ISO 6149-2; M12x1 m, DIN EN ISO 6149-2; M12x1.25 m, DIN EN ISO 6149-2; M12x1.5 m, DIN EN ISO 9974-2
Media temperature –40°C ... +85°C
Ambient temperature –40°C ... +85°C (EN 50155: OT6)

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