The Allen-Bradley D40MLP2UM12 is an RFID-based magnetic locking safety interlock switch with a solenoid lock, designed to guard access to hazardous machine zones. Its 2NC/1NO contact configuration provides dual-channel redundancy for the safety circuit and a separate auxiliary signal for the controller. The IP67-rated plastic housing and M12 connector suit it for washdown environments on packaging, food processing, or material handling lines where a guard door must stay locked until the machine cycle is safely complete.
The solenoid lock means the switch holds the guard closed under power — it won't release until the control system de-energizes the solenoid, which is critical for applications with coast-down risk or trapped-key logic. The 2NC contacts feed the safety relay or safety PLC; the 1NO gives a status signal to the HMI or line controller. IP67 means the switch body and the M12 connection survive hose-down cleaning without ingress — no need for a secondary enclosure in most wet-area installs. The 96 mm depth and 64 mm width fit a standard 64 mm slot in extruded-aluminum guard framing.