Notes Switch travel diagram
  Contact closed
  Contact open
  Setting range
  Break point
  Positive opening sequence/- angle
VS  adjustable range of NO contact
  adjustable range of NC contact
N   after travel
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• Metal enclosure
• Release push button
• Position indicator
• Robust design
• Large wiring compartment
• Twisting of towing eye not possible
• External watertight collar
• wire pull and breakage detection
• one-side operation / wire up to 75 m long
• 3 cable entries M 20 x 1.5

Ordering details
Product type descriptionEX-ZQ 900-04-3D
Article number101212894
EAN Code4030661402147
StandardsEN ISO 13849-1
B10d Normally-closed contact (NC)100.000
Mission time20 Years
Global Properties
Permanent lightEX-ZQ 900
Equipment categoryII 3D
StandardsIEC/EN 60947-5-1, IEC/EN 60947-5-5, EN ISO 13850, EN 60079-0, EN 60079-31
Compliance with the Directives (Y/N) Yes
- Material of the housingszinc die-cast
- Material of the coverSteel
- Material of the contactsSilver
Housing coatingpainted
Emergency-Stop button (Y/N)No
Mechanical data
Design of electrical connectionScrew connection
Cable cross-section of the cable glands
- Min. Cable cross-section of the cable glandsØ 7
- Max. Cable cross-section of the cable glandsØ 12
Cable section
- Min. Cable section0,75
- Max. Cable section2.5
Mechanical life> 1.000.000 operations
noticeAll indications about the cable section are including the conductor ferrules.
Actuating forcemax. 200 N
actuating travelmax. 400 mm
Length of wiremax. 75 m
Ambient conditions
Ambient temperature
- Min. environmental temperature−20
- Max. environmental temperature+55
Protection classIP67 to IEC/EN 60529
Electrical data
Design of control elementNormally open contact (NO), Opener (NC)
Switching principleSnap switch element
Number of auxiliary contacts0
Number of safety contacts4
Rated impulse withstand voltage Uimp6 kV
Rated insulation voltage Ui500 V
Thermal test current Ithe4 A
Utilisation categoryAC-15: 230 V / 4 A,
DC-13: 24 V / 1 A
Max. fuse rating6 A gG D-fuse
EX-markingEX II 3D Ex tc IIIC T100°C Dc
Explosion protected category for dusts3D
Explosion protection Zones for dusts22
Dimensions of the sensor
- Width of sensor71.5
- Height of sensor221 mm up 237 mm
- Length of sensor57
For lengths of over 10 m, intermediate wire supports must be installed every 3 to 5 m.
Recommended cable lengths for pull-wire Emergency-Stop switches in relation to the range of ambient temperature.
As the thimbles are subject to deformation in case of wire pull, the wire should be pulled several times after fitting. After that, the wire must be re-tensioned using the eyebolt or the tensioner.
Included in delivery
Including Ex-certified screwed cable gland and screw plug

Note Diagram
  positive break NC contact
  no active
  Normally-open contact
  Normally-closed contact

K.A. Schmersal GmbH & Co. KG, Möddinghofe 30, D-42279 Wuppertal
The data and values have been checked throroughly. Technical modifications and errors excepted.
Generiert am 22.09.2019 - 18:17:07h Kasbase 3.3.0.F.64I