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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• 2 cable entries M 20 x 1.5
• Mounting details to EN 50047
• Thermoplastic enclosure
• Double-insulated
• 58 mm x 50,5 mm x 31 mm
• Good resistance to oil and petroleum spirit
• Wide range of alternative actuators
• Actuator heads can be repositioned by 4 x 90°

 
 
Ordering details
 
Product type descriptionT4S 256-20ZH - Ordering suffix
EAN Code4030661136301
eCl@ss27-27-26-01
 
Approval
 
Approval USA/CAN
CCC
EAC
 
Classification
 
StandardsISO 13849-1
Mission time20 Years
notice
 
Global Properties
 
Permanent lightT 256 Druckbolzen mit Zentralbefestigung 4S
StandardsIEC 60947-5-1, ISO 13849-1, BG-GS-ET-15
Compliance with the Directives (Y/N) Yes
Suitable for safety functions (Y/N)No
Materials
- Material of the housingsPlastic, glass-fibre reinforced thermoplastic, self-extinguishing
- Material of the contactsSilver
Housing coatingNone
Housing construction formNorm construction design
Weight96
 
Mechanical data
 
Design of electrical connectionScrew connection
Cable section
- Min. Cable section0,75
- Max. Cable section2.5
Mechanical life20.000.000 operations
Switching frequencymax. 5000 /h
noticeAll indications about the cable section are including the conductor ferrules.
Design of actuating elementPlunger
Actuating forcemin. 9 N
Bounce durationin accordance with actuating speed
Switchover timein accordance with actuating speed
Positive break force19 N
Actuating speed for vertical actuation
- Min. Actuating speed60 mm/min
- Max. Actuating speed1 m/s
 
Ambient conditions
 
Ambient temperature
- Min. environmental temperature−30 °C
- Max. environmental temperature+80 °C
Protection classIP67
 
Electrical data
 
Design of control elementNormally open contact (NO)
Switching principleSlow action with staggered contacts
Number of auxiliary contacts2
Number of safety contacts0
Rated impulse withstand voltage Uimp6 kV
Rated insulation voltage Ui500 V
Thermal test current Ithe10 A
Utilisation categoryAC-15: 230 V / 4 A,
DC-13: 24 V / 1 A
Required rated short-circuit current1000 A
Max. fuse rating6 A gG D-fuse
 
Dimensions
 
Dimensions of the sensor
- Width of sensor58 mm
- Height of sensor90.5 mm
- Length of sensor31 mm
 
notice
 
Switch with 2 NO contacts are not for security tasks
 
Diagram
 


Note Diagram
  positive break NC contact
  active
  no active
  Normally-open contact
  Normally-closed contact
 
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
 
Ordering suffix
 
The applicable ordering suffix is added at the end of the part number of the safety switch.
Order example: T4S 256-20zh-1637
...-1637 0,3 µm gold-plated contacts

...-NPT Cable entry NPT 1/2“

...-2310 M12 connector with B-coding

...-1297 Enclosure with transverse slotted holes

...-ST M12 connector with A-coding


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 20.09.2019 - 16:00:34h Kasbase 3.3.0.F.64I