TK 256-02Z-M20

Item number: 101169394


ePLAN Data
Product type description:

(1)(2) 2(3)5-(4)Z(5)-(6)-(7)-(8)-(9)

ZSnap action
TSlow action (not for AF/S)

SPlunger S
RRoller plunger R
4SPlunger 4S
4RRoller plunger 4R
1ROffset roller lever 1R
KOffset roller lever K
3KAngle roller lever 3K
4KAngle roller lever 4K
K4Angle roller lever K4
1HRoller lever 1H
7HRoller lever 7H
10HRod lever 10H
12HRoller lever 12H
14HRoller lever 14H
AFSpring rod lever AF
RMSBrass roller

3slim design
215large design

022 NC contact
111 NO contacts/1 NC contact
202 NO contacts, (switches with 2 NO contacts are not suitable for safety applications)

HSlow action with staggered contacts
UESlow action with overlapping contacts
Zadditional seal between attachment and housing

M16cable entry M16
withoutCable entry M20
IDIDC method of termination
NPTCable entry NPT 1/2"
STM12 connector with A-coding (Caution! According to EN 60204-1, the versions with connector must only be used in PELV circuits.)
ST-2310M12 connector with B-coding (Caution! According to EN 60204-1, the versions with connector must only be used in PELV circuits.)

2574Enclosure with L-shaped mounting holes (horizontally or vertically adjustable)

2138Roller lever 7H for position switches with safety function

1637Gold-plated contacts
Not all component variants, which are possible according to this order code are available and/or technically feasible.
  • 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 data

Product type description

TK 256-02Z-M20

Article number (order number)


EAN (European Article Number)


eCl@ss number, version 12.0


eCl@ss number, version 11.0


eCl@ss number, version 9.0


ETIM number, version 7.0


ETIM number, version 6.0


Approvals - Standards




General data



EN ISO 13849-1

EN IEC 60947-5-1

Housing construction form

Norm construction design

Actuator type to EN 50047


Enclosure material

Plastic, glass-fibre-reinforced

Material of the contacts, electrical


Gross weight

80 g

General data - Features

Safety functions


Number of safety contacts


Safety classification


EN ISO 13849-1

Mission time

20 Year(s)

Safety classification - Safety outputs

B10D Normally-closed contact (NC)

20,000,000 Operations

Mechanical data

Actuating element

Offset roller lever

Mechanical life, minimum

20,000,000 Operations

Actuating force, minimum

9 N

Positive break force, minimum

19 N

Actuating speed, minimum

240 mm/min

Actuating speed, maximum

1 m/s

Note (Actuating speed)

Actuating speed with actuating angle 30° to switch axis

Note Bounce duration

Bounce duration in accordance with actuating speed

Note (Switchover time)

Switchover time in accordance with actuating speed

Mechanical data - Connection technique


Screw terminals M20 x 1.5

Cable section, minimum

0.75 mm²

Cable section, maximum

2.5 mm²

Note (Cable section)

All indications including the conductor ferrules.

Mechanical data - Dimensions

Length of sensor

31 mm

Width of sensor

58 mm

Height of sensor

82.1 mm

Ambient conditions

Degree of protection



Ambient temperature, minimum

-30 °C

Ambient temperature, maximum

+80 °C

Ambient conditions - Insulation values

Rated insulation voltage Ui

500 V

Rated impulse withstand voltage Uimp

6 kV

Electrical data

Thermal test current

10 A

Required rated short-circuit current

1,000 A

Utilisation category AC-15

240 VAC

Utilisation category AC-15

4 A

Utilisation category DC-13

24 VDC

Utilisation category DC-13

1 A

Switching element

Opener (NC)

Switching principle

Slow action

Switching frequency

5,000 /h

Language filter

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Switch travel diagram


Schmersal India Pvt. Ltd., Plot No - G-7/1, Ranjangaon MIDC, Tal. - Shirur, Dist.- Pune 412 220

The details and data referred to have been carefully checked. Images may diverge from original. Further technical data can be found in the manual. Technical amendments and errors possible.

Generated on: 31/01/2023, 6:57 am