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

CTP-L1-AP-U-HA-AE-SA-EX-156240 (Rend. sz. 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 locking monitoring output OL
  • Approach directions A, B and C (delivery state)
CTP-L1-AP-U-HA-AE-SA-EX-156240 (Rend. sz. 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

CTP‑L1Guard locking actuated by spring force applied and power-ON released (closed-circuit current principle)

Connector assignment

Plug connector (view of connection side)




Conductor coloring of connecting cable



Operating voltage of guard locking solenoid, 24 V DC




Operating voltage of AP electronics, 24 V DC




Safety output, channel 1




Safety output, channel 2




Guard lock monitoring output




Door monitoring output



0 V UB

Operating voltage of AP electronics, 0 V




Operating voltage of guard locking solenoid, 0 V


Dimension drawing
Dimension drawing
Wiring diagram
Wiring diagram
CTP: Transponder coded safety switch CTP

Dimension drawing

Dimension drawing
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

Wiring diagram

Wiring diagram

Műszaki adatok


Zulassung EACATEX

Mechanikai értékek és környezet

Shock and vibration resistance In acc. with EN 60947-5-3
Housing material
Escape release Aluminum
Protective plate Stainless steel
Mounting plate Aluminum
Switch head cover Die-cast zinc
Safety switch housing Fiber glass reinforced thermoplastic
Net 1 kg
Ambient temperature
At UB = 24V DC -20 ... +55 °C
Degree of protection IP65/IP66 (Screwed tight plug connector/mating component)
Mechanical life 1 x 106
Installation orientation Any
Ready delay max.1 s
Switching frequency max.0,5 Hz
Connection 1 plug connector M12, 8-pin
Approach speed max.20 m/min
Guard locking principle Closed-circuit current principle
Locking force Fmax 3900 N
Locking force FZh 3000 N (Fzh = Fmax/1.3 Depending on the actuator used)
Retention force 20 N
Extraction force 20 N
Actuating force 10 N
Overtravel 5 mm

Elektromos csatlakoztatási értékek

Test-pulse interval min.100 ms
Test pulses max.0,3 ms (Applies for a load with C ≤ 30nF and R ≤ 20kOhm)
Operating voltage DC
UUB 24 V DC -15% ... 15% Reverse polarity protected, regulated, residual ripple < 5%, PELV
Current consumption
IUB 40 mA
IIMP 400 mA
Utilization category acc. to EN 60947-5-2
DC-13 24V 150mA (Caution: outputs must be protected with a free-wheeling diode in case of inductive loads)
Solenoid operating voltage DC
UIMP 24 V DC -15% ... +10% Reverse polarity protected, regulated, residual ripple < 5%, PELV
External (operating voltage UB) 0,25 ... 8 A
External (solenoid operating voltage IMP) 0,5 ... 8 A
Rated insulation voltage Ui 50 V
Rated impulse withstand voltage Uimp 0,5 kV
Connection rating 6 W
EMC protection requirements In acc. with EN IEC 60947-5-3
Solenoid duty cycle 100 %
Degree of contamination (external, according to EN 60947-1) 3
Safety class
EN IEC 61140 III
Switching load
According to UL 24V DC, class 2 (Alternatively see operating instructions)
Safety outputs FO1A / FO1B
Type of output 2 semiconductor outputs, p-switching, short circuit-proof
Switching current
Per safety output FO1A / FO1B 1 ... 150 mA
Output voltage
HIGH U(FO1A) / U(FO1B) UB-1,5 ... UB V DC
LOW U(FO1A) / U(FO1B) 0 ... 1 V DC
Off-state current Ir max.0,25 mA
Turn-on time max.400 ms
Discrepancy time
Both safety outputs max.10 ms In acc. with EN IEC 60947-5-3
Monitoring output OD
Type of output p-switching, short circuit-proof
Switching current 1 ... 50 mA
Output voltage 0,8xUB ... UB V DC
Monitoring output OL
Type of output p-switching, short circuit-proof
Switching current 1 ... 50 mA
Output voltage 0,8xUB ... UB V DC

Működési tartomány

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


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

Megbízhatósági értékek az EN ISO 13849-1 szerint

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



Műszaki támogatás

Műszaki támogatás
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