Robotic System Integrators have to meet several functional safety requirements for risk reduction strategies to keep operators safe during production and maintenance activities. The TL4019 series offers a guard lock interlock with a holding force of 1,200 N (270lb.). For compliance to ANSI/RIA R15.06, the TL4019 has a rear manual release that allows unlocking from inside the protective area.  For simple installation, the TL4019 series line-up has a variety of contact configurations, an optional slide bolt with an integral door handle, and a rotatable head.

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  • IP67 (NEMA 6) enclosure to withstand water washdown
  • 4 contacts: 2 N/C safety + 1 contact for door position monitoring + 1 contact for lock monitoring
  • Rear manual release—allows unlocking of switch from inside of guarded area per ANSI/RIA R15.06
  • Narrow profile enables mounting to 2 in. square tubing or in applications with space restrictions



  • High locking force of 1,200 N (270 lb.) locks guard door shut until machine is safe to enter
  • Rotatable head—the rotatable head of the TL4019 provides 8 actuator entry positions to satisfy most installation requirements
  • Optional key release—this option on power-to-unlock models allows manual unlocking of the guard door
  • Optional slide bolt with integral door handle aids installation on sliding and swinging guard doors