Ex 61 Z / ExM 61 Z

  • Ex zone 1 and 21
  • Metal enclosure
  • Wall mounting
  • Slow or snap action: 2 contacts
  • Various spring force variants (actuating forces) available on request
  • Pull-wire function
  • Watertight collar W for protection against penetration of dirt available
  • 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 aluminium die-cast, powder-coated
Cover steel, powder-coated
Degree of protection IP 65 to IEC/EN 60529
B10d (10 % load) Ex 61 Z: 2 million
TM max. 20 years
Switch insert Ex 14, ExM 14
Contact material silver
Switching system slow or snap action
Switching elements ExM 61: change-over contact with single break, Form C,
Ex 61: 1 NC/1 NO contact, type Zb
Connection pre-wired cable H05VV-F
Cable cross-section 3 or 4 x 0.75 mm² (incl. conductor ferrules)
Cable length 3 m
Rated impulse withstand voltage Uimp 4 kV
Rated operating isolation voltage Ui 250 V
Conventional thermal current Ithe Ex 61: T6: 6 A; T5: 3 A
ExM 61: 5 A
Rated operating current/voltage Ie/Ue Ex 61:
6 A/250 VAC, 0.25 A/230 VDC, 3 A/24 VDC;
ExM 61:
5 A/250 VAC, 0.16 A/230 VDC
Utilisation category AC-15; DC-13
Short-circuit protection 6 A gG/gN fuse
Ambient temperature Ex 61:
T6: –20 °C … +65 °C,
T5: –20 °C … +75 °C, +90 °C with max. 3 A
ExM 61:
–20 °C … +60 °C
Mechanical life > 1 million operations
Operation cycles max. 1800/h
Repeat accuracy of switching points ± 0.1 mm
Impact energy max. 7 J
Ex marking Ex 61:
II 2G Ex db IIC T6/T5 Gb,
II 2D Ex tb IIIC
T80 °C/T95 °C Db

ExM 61:
II 2G Ex d IIC T6 Gb,
II 2D Ex tb IIIC T80 °C Db IP65
Approvals Ex 61:
PTB 03 ATEX 1070 X*
IECEx PTB 06.0098X*


ExM 61:
PTB 03 ATEX 1069 X*


*referring to the switch insert

Ordering details

Slow action, 1 NC/1 NO contact

Type   Material no.  
Type    Material no.   
Ex 61 Z 1Ö/1S - 3m 1047827
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, Watertight collar

Type   Material no.  
Type    Material no.   
Ex 61 WZ 1Ö/1S - 3m stock type Standard versions, in stock or available at short notice 1047842
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Snap action, 1 change-over contact

Type   Material no.  
Type    Material no.   
ExM 61 Z - 3m 1047996
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.

Snap action, 1 change-over contact, Watertight collar

Type   Material no.  
Type    Material no.   
ExM 61 WZ - 3m 1158694
If you cannot find the version you require, just ask us! Our product portfolio to date has included many customised switchgear variants.