// EXPLOSION PROTECTION

EEx ZS 73 SR

Features/Options

  • Ex zone 1 and 2,
    as well as 21 and 22
  • Metal enclosure
  • 2 contacts
  • Cable
  • Release by push button or key possible
  • Belt-alignment roller made of stainless steel 1.4104
  • Special version only for equipment category 3D, available for dust Ex zone 22
  • Inmetro approval for Brazil to be ordered separately



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EEx ZS 73 SR

 

Technical data

Standards IEC/EN 60947-5-1, EN 50014, EN 50018, EN 50281-1-1
Enclosure aluminium die casting, enamel finish; ZS 73 NIRO: aluminium die casting, hard-coated and enamelled
Cover glass-fibre reinforced, shockproof thermoplastic, ultramid
Switch insert EEx 14
Protection class EEx ZS 73 SR VD: IP 65; EEx ZS 73 SR VS: IP 54; to IEC/EN 60529
Contact material silver
Switching system slow action, positive break NC contacts Zwangsöffnung
Switching elements change-over contact with double break or 2 NC contacts
Connection cable H05VV-F
Cable section 4 x 0.75mm2 (incl. conductor ferrules)
Cable length 3 m
Uimp 6 kV
Ui 250 V
Ithe 6 A
Utilisation category AC-15, DC-13
Ie/Ue 6 A/250 VAC, 0,25 A/230 VDC
Max. fuse rating 6 A gL/gG D-fuse
Ambient temperature –20 °C … +65 °C, T5: +75 ºC
Mechanical life > 1 million operations
Ex certification EEx geprüft II 2G EEx d IIC T6, II 2D IP65 T80°C
Approvals PTB 06 ATEX 1066 X

Contact variants

  Snap action   
1 NC/1 NO contact
EEx ZS 73 SR 1Ö/1S
2 NC contacts
EEx ZS 73 SR 2Ö

Features/Options

  • Indicator lamps for zone 22 for 24VDC are indicated at the end of this chapter
  • Indicator lamp position on the left side, other positions possible on request
  • Version for equipment category 3D, dust Ex zone 22 is equipped with a wiring compartment

Key release VS