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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EX-T4V7H 335-20Y-2138
• Explosion protection for ATEX Zones 1 and 21
• Metal enclosure
• Wide range of alternative actuators
• Good resistance to oil and petroleum spirit
• 40,5 mm x 76 mm x 38 mm
• Actuator heads can be repositioned by 4 x 90°
• Ex-certified screwed cable gland
• Mounting details to EN 50041
• 1 Cable entry M 20 x 1.5
• Ex certified

Ordering details
Product type descriptionEX-T4V7H335-20Y-2138
Article number101212068
EAN Code
StandardsEN ISO 13849-1
Mission time20 Years
Global Properties
Permanent lightEX-T335 Rollenschwenkhebel 7H 2138
StandardsEN 60079-0, EN 60079-1, EN 60079-7, EN 60079-31, EN 60947-5-1, BG-GS-ET-15
Compliance with the Directives (Y/N) Yes
Suitable for safety functions (Y/N)No
- Material of the housingszinc die-cast
- Lever materialMetal film
- Roller materialPlastic
- Material of the contactsSilver
Housing coatingpainted
Housing construction formNorm construction design
Mechanical data
Design of electrical connectionScrew connection
Cable cross-section of the cable glands
- Min. Cable cross-section of the cable glands7
- Max. Cable cross-section of the cable glands12
Cable section
- Min. Cable section1
- Max. Cable section2.5
Mechanical life> 1.000.000 operations
Switching frequency1800
noticeAll indications about the cable section are including the conductor ferrules.
Design of actuating elementRoller lever
actuating torque31
Bounce duration< 3
Switchover timein accordance with actuating speed
Impact energy7
Actuating speed with actuating angle 30° to switch axis
- Min. Actuating speed
- Max. Actuating speed2.5
Ambient conditions
Ambient temperature
- Min. environmental temperature−20
- Max. environmental temperature+55 °C
at Cable section 2.5
+50 °C
at Cable section 1 mm
Protection classIP65
Electrical data
Design of control elementNormally open contact (NO)
Switching principleSlow action
Number of auxiliary contacts2
Number of safety contacts0
Rated impulse withstand voltage4
Rated insulation voltage250
Thermal test current5 A
Utilisation categoryAC-1
Max. fuse rating6 A gG D-fuse
EX-markingEX II 2D Ex tb IIIC T80°C Db
EX II 2G Ex d e IIC T6 Gb
Explosion protection categories for gases2G
Explosion protection Zones for gases1
Explosion protected category for dusts2D
Explosion protection Zones for dusts21
Dimensions of the sensor
- Width of sensor40.5
- Height of sensor173.5
- Length of sensor57.25
Switch with 2 NO contacts are not for security tasks
KeywordsEx, EEx, ATEX, Ex 235, Ex 235, 235 Ex, 235ex, 235ex, ATEX 235
Switch travel diagram

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

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 16.09.2019 - 20:12:34h Kasbase 3.3.0.F.64I