SICK T40 Safety Interlock Switch, RFID, Plastic, Interlock

SICK T40 Series Safety Interlock Switch, 24V DC Supply Voltage, IP67 - T40-E0101K

This safety interlock switch provides non-contact access monitoring for industrial machinery using RFID sensing. It is designed for use where guarded openings must be monitored without mechanical contact, offering self-monitoring semiconductor outputs and compatibility with long cable runs via an M12 plug connector. The device operates from a 24V DC supply and includes status and fault indication to support integration into safety systems.

Features and Benefits:

• Category 4 safety enables highest functional safety performance
  Performance level PL e reduces systemic safety risk
  Two OSSD outputs allow safe series connection flexibility
  Response time ≤290 MS supports timely machine shutdowns
  Rated current 0.4A provides controlled contact switching

Applications

• Suitable for monitoring guarded access on automated lines
  Used with safety controllers requiring PL e diagnostics
  Ideal for non-contact detection in washdown-capable cells
  Can be used for series connection with T-connector systems
  Suitable for installations requiring plug-in M12 connectivity

What actuator arrangements are supported?

It accepts actuators in five head directions and works with specific coded actuators supplied separately.

How is the device powered and protected electrically?

It requires 24V DC (20.4V to 27.6V) and is rated for use with a Class 2 power supply and an external fuse between 0.25A and 4A.

What environmental limits apply to operation?

It operates between -20°C and +55°C and can be stored down to -20°C and up to +70°C.

What connection and mounting options exist?

The unit uses an 8-pin M12 plug connector with a fibreglass-reinforced polyamide coupling nut and is designed for rectangular mounting.

Which safety classifications describe its reliability?

It meets Category 4 and Type 4 classifications, with PFHD 2.1 x 10‑9 and a 20‑year mission time.

Notes

Actuator and bolts for RFID safety switches is T4000-1KBQ(RS Stock No. 285-9036).