EUCHNER – More than safety.
EUCHNER – More than safety.

CTP-L1-AP-U-HA-AE-SA-EX-156240 (Order no. 156240)

Transponder-coded safety switch CTP-AP, M12, ATEX

  • ATEX version
  • Suitable for use in zones 2 and 22 (gases and dusts)
  • Safety switch with guard locking and integrated evaluation electronics
  • With escape release
  • 2 safety outputs (semiconductor outputs)
  • Up to category 4 / PL e according to EN ISO 13849-1
  • With plug connector M12
  • Unicode
  • Door monitoring output OD
  • Guard lock monitoring output OL
  • Approach directions A, B and C (delivery state)
CTP-L1-AP-U-HA-AE-SA-EX-156240 (Order no. 156240)


Approach direction


Can be adjusted in 90° steps

Mounting plate

A mounting plate for supporting the escape release is included.

Unicode evaluation

Each actuator is highly coded (unicode). The switch detects only taught-in actuators. Additional actuators can be taught-in. Only the last actuator taught-in is detected.

Guard locking type


Guard locking actuated by spring force applied and power-ON released (closed-circuit current principle)

Connector assignment

Plug connector (view of connection side)PinDesignationFunctionConductor coloring of connecting cable

1IMPOperating voltage of guard locking solenoid, 24 V DCWH
2UBOperating voltage of AP electronics, 24 V DCBN
3FO1ASafety output, channel 1 GN
4FO1BSafety output, channel 2 YE
5OLGuard lock monitoring outputGY
6ODDoor monitoring outputPK
70 V UBOperating voltage of AP electronics, 0 VBU
8IMMOperating voltage of guard locking solenoid, 0 VRD
Dimension drawing
Dimension drawing
Wiring drawing<br>Wiring diagram
Wiring drawing
Wiring diagram
CTP: Transponder coded safety switch CTP

Dimension drawings

Dimension drawings
1Auxiliary release
2Locking screw
4Protective plate
5Grounding terminal - for preventing electrostatic charging. Ground switch via cable. Cable cross-section 4...6 mm²
6Escape release
7Mounting plate

Connection examples

Connection examples

Technical data


EAC_RU C-DE.MO05.B.00971/20c_UL_us_E155795_3/11FCC_2AJ58-05_

Work area

Repeat accuracy R
according to EN 60947-5-2 10 %

Electrical connection ratings

Current consumption
IIMP 400 mA
IUB 40 mA
Degree of contamination (external, according to EN 60947-1) 3
EMC protection requirements according to EN IEC 60947-5-3
external (operating voltage UB) 0.25 ... 8 A
external (solenoid operating voltage IMP) 0.5 ... 8 A
Operating voltage DC
UUB 24 V DC -15% ... +15% reverse polarity protected, regulated, residual ripple 5%, PELV
Power consumption 6 W
Rated impulse withstand voltage Uimp 0.5 kV
Rated insulation voltage Ui 50 V
Safety class
EN IEC 61140 III
Solenoid duty cycle 100 %
Solenoid operating voltage DC
UIMP 24 V DC -15% ... +10% reverse polarity protected, regulated, residual ripple < 5%, PELV
Switching load
according to UL 24V DC, Class 2 (alternatively, see operating instructions)
Test pulse interval min. 100 ms
Test pulses max. 0.3 ms (Applies to a load with C <= 30 nF and R <= 20 kohm)
Utilization category
DC-13 24V 150mA (Caution: outputs must be protected with a free-wheeling diode in case of inductive loads)
Monitoring output OD, OL
Output type p-switching, short circuit-proof
Output voltage 0.8xUB ... UB V DC
Switching current 1 ... 50 mA
Safety outputs FO1A / FO1B
Discrepancy time
both safety outputs max. 10 ms according to EN IEC 60947-5-3
Off-state current Ir max. 0.25 mA
Output type 2 semiconductor outputs, p-switching, short circuit-proof
Output voltage
LOW U(FO1A) / U(FO1B) 0 ... 1 V DC
HIGH U(FO1A) / U(FO1B) UB-1.5 ... UB V DC
Switching current
per safety output FO1A / FO1B 1 ... 150 mA
Turn-on time max. 400 ms

Mechanical values and environment

Actuating force 10 N
Ambient temperature
at UB = 24V DC -20 ... +55 °C
Approach speed max. 20 m/min
Connection 1 plug connector M12, 8-pin
Degree of protection IP65/IP66 (screwed tight plug connector/mating component)
Extraction force 20 N
Guard locking principle Closed-circuit current principle
Installation orientation any
Locking force Fmax 3900 N
Locking force FZh 3000 N (Fzh = Fmax/1.3, depending on the actuator used)
Protective plate Stainless steel
Safety switch housing reinforced thermoplastic
Mounting plate Aluminum
Switch head cover Die-cast zinc
Mechanical life 1 x 10⁶
Overtravel 5 mm
Ready delay max. 1 s
Retention force 20 N
Shock and vibration resistance according to EN 60947-5-3
Switching frequency max. 0.5 Hz

Reliability values according to EN ISO 13849-1

Category 4
Mission time 20 y
Performance Level PL e
PFHd 4.1 x 10 -9


Additional feature Escape release actuated by pushing
Explosion protection
incl. protective plate and mounting plate II3G Ex ec IIC T4 Gc X / II3D Ex tc IIIC T110°C Dc X
The following applies to the approval according to UL Operation only with UL Class 2 power supply or equivalent measures; see operating instructions



Complete package

Download all important documents with a single click.


  • The operating instructions and any additions to the operating instructions or brief instructions
  • Any data sheets to supplement the operating instructions
  • The declaration of conformity
Download Complete Package (ZIP, 5,7 MB)

Single Documents

Other Documents

Ordering data

Ordernumber 156240
Item designation CTP-L1-AP-U-HA-AE-SA-EX-156240
Gross weight 1,3kg
Customs tariff number 85365019

Technical support

Technical support
Do you have technical questions about our products, their possible use or applications? Our experts will be happy to help.

+44 114 2560123

+1 315 701-0315