Ex 355 4VSR

  • Ex zone 1 and 21
  • Metal enclosure
  • 2 contacts
  • Mounting details to EN 50041
  • Wiring compartment
  • Adjustable-length rod lever with nylon roller
  • For light- and medium-heavy applications
  • Special version only for dust Ex zone 22 available

Technical data

Applied standards EN 60947-5-1, EN 60079-0, EN 60079-1, EN 60079-7, EN 60079-31, EN ISO 13849-1
Enclosure zinc die-cast, enamel finish
Degree of protection IP 67 to IEC/EN 60529
B10d (10 % load) 2 million
TM max. 20 years
Switch insert 1 x Ex 95
Contact material silver
Switching system slow action, positive break NC contacts
Switching elements 1 NC/1 NO contact or 2 NC contacts, type Zb
Connection screw connection terminals
Cable cross-section max. 1.5 mm² (incl. conductor ferrules)
Cable entry 3 x M20 x 1.5 (incl. 1 cable gland)
Clamping range 7 … 12 mm
Rated impulse withstand voltage Uimp 4 kV
Rated operating isolation voltage Ui 250 V
Conventional thermal current Ithe 6 A
Rated operating current/voltage Ie/Ue 6 A/250 VAC; 0.25 A/230 VDC
Utilisation category AC-15; DC-13
Short-circuit protection 6 A gG/gN fuse
Ambient temperature T6: –20 °C … +40 °C;
T5: –20 °C … +60 °C
Mechanical life > 1 million operations
Operation cycles max. 1800/h
Repeat accuracy of switching points ± 0.1 mm
Contact opening max. 2 x 3.5 mm
Impact energy max. 7 J
Ex marking II 2G Ex db e IIC T6/T5 Gb,
II 2D Ex tb IIIC
T80 °C/T95 °C Db
IECEx Ex db e IIC T6/T5 Gb,
Ex tb IIIC T80 °C/T95 °C Db
Approvals BVS 04 ATEX E 126
IECEx BVS 07.0013

Ordering details

Slow action, 1 NC/1 NO contact

Type   Material no.  
Type    Material no.   
Ex 355 4VSR 1Ö/1S 1048057
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 contacts

Type   Material no.  
Type    Material no.   
Ex 355 4VSR 2Ö 1180267
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Slow action, 1 NC/1 NO contact with overlapping

Type   Material no.  
Type    Material no.   
Ex 355 4VSR UE on request Produced to order.
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.