Ex ZS 90 SR

  • Ex zone 1 and 21
  • Thermoset enclosure
  • 2 or 4 contacts
  • With contact staggering
  • With latching and release by lever possible
  • Belt-alignment lever continuously adjustable
  • Attention: Please state required international approvals with your order!

Technical data

Applied standards EN 60947-5-1, EN 60079-0, EN 60079-1, EN 60079-31, EN ISO 13849-1
Enclosure thermoset, UV resistant to EN ISO 4892
Cover thermoset, UV resistant to EN ISO 4892
Degree of protection IP 65 to IEC/EN 60529
B10d (10 % load) Ex ZS 90 SR VD: 200 000,
Ex ZS 90 SR: 2 million
TM max. 20 years
Switch insert 2 x Ex 14
Contact material silver
Switching system slow action, positive break NC contacts
Switching elements 1 NC/1 NO contact or 2 NC/2 NO contacts, type Zb
Connection pre-wired cable H05VV-F
Cable length 3 m
Cable entry 2 x M25 x 1.5 (incl. 2 cable glands)
Rated impulse withstand voltage Uimp 4 kV
Rated operating isolation voltage Ui 250 V
Conventional thermal current Ithe T6: 6 A, T5: 3 A
Utilisation category AC-15; DC-13
Rated operating current/voltage Ie/Ue 6 A/250 VAC; 0.25 A/230 VDC
Short-circuit protection 6 A gG/gN fuse
Ambient temperature T6: –20 °C … +65 °C,
T5: –20 °C … +75 °C, +90 °C with max. 3 A
Mechanical life Ex ZS 90 SR VD:
> 100 000 operations,
Ex ZS 90 SR:
> 1 million operations
Impact energy max. 7 J
Ex marking II 2G Ex db IIC T6/T5 Gb,
II 2D Ex tb IIIC
T80 °C/T95 °C Db
IECEx Ex db IIC T6/T5 Gb,
Ex tb IIIC T80 °C/T95 °C Db
Approvals PTB 03 ATEX 1070 X *
IECEx PTB 06.0098X *
* referring to the switch insert

Ordering details

Slow action, 1 NC/1 NO contact

Type   Material no.  
Type    Material no.   
Ex ZS 90 SR 1S/1Ö - 3m 1185567
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Slow action, 2 NC/2 NO contacts

Type   Material no.  
Type    Material no.   
Ex ZS 90 SR 1ÖS/1ÖS VD - 3m 1185386
Type    Material no.   
Ex ZS 90 SR 1ÖS/1ÖS - 3m stock type Standard versions, in stock or available at short notice 1184969
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.