SICK T40 Safety Interlock Switch, RFID, Plastic, Interlock

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.

• 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

• 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

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

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.

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

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

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

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