Ex 61 Z / ExM 61 Z

Features/Options

  • 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
  • N.B.: Please state required approvals for Russia, China, Brazil and North America with your order!

Technical data

StandardsEN 60947-5-1; EN 60079-0,
EN 60079-1, EN 60079-31;
EN ISO 13849-1
Enclosurealuminium die-cast, powder-coated
Coversteel, powder-coated
Switch insertEx 14, ExM 14
Degree of protectionIP 65 to IEC/EN 60529
Contact materialsilver
Switching systemslow or snap action
Switching elementsExM 61: change-over contact with single break, Form C,
Ex 61: 1 NC/1 NO contact, type Zb
Connectionpre-wired cable H05VV-F
Cable cross-section3/4 x 0.75 mm² (incl. conductor ferrules)
Cable length3 m
B10d (10 % Load)Ex 61 Z: 2 million
TMmax. 20 years
Uimp4 kV
Ui250 V
ItheT6: 6 A, T5: 3 A
Ie/UeEx 61:
6 A/250 VAC, 0.25 A/230 VDC;
ExM 61:
5 A/250 VAC, 0.16 A/230 VDC
Utilisation categoryAC-15; DC-13
Max. fuse rating6 A gG/gN fuse
Ambient temperatureEx 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 cycles1800/h
Repeat accuracy of switching points± 0.1 mm
Impact energymax. 7 J
Ex markingEx 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
ApprovalsEx 61:
PTB 03 ATEX 1070 X*
IECEx PTB 06.0098X*


ExM 61:
PTB 03 ATEX 1069 X*


*referring to the switch insert
Ordering details
Type code

Slow action, 1 NC/1 NO contact

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

Slow action, 1 NC/1 NO contact

Watertight collar

Type   Material no.
Ex 61 WZ 1Ö/1S - 3m 1047842

Snap action, 1 change-over contact

Type   Material no.
ExM 61 Z - 3m 1047996

Snap action, 1 change-over contact

Watertight collar

Type   Material no.
ExM 61 WZ - 3m 1158694