Allen-Bradley 440R-GL2S2T Guard Locking Safety Relay — GLT guard-locking relay with time delay, PL e / SIL 3. The Allen-Bradley 440R-GL2S2T is a Guardmaster Guard Locking safety relay with time delay (GLT). It provides 2 safety-related delayed semiconductor outputs, 2 undelayed semiconductor outputs, and 1 undelayed signaling output, all operating from a 24V DC control supply. The device uses a dual-channel SWS input with time-delayed outputs and screw terminals accepting 0.2 to 2.5 mm2 (24 to 14 AWG) wire. It achieves Performance Level e, SIL up to 3, and Category up to 4 in an IP40 (NEMA 1) DIN-rail housing..
MPN / SKU: 440R-GL2S2T
440R-GL2S2T Applications
Apply the 440R-GL2S2T where guard locking with a controlled stop delay is required, such as machines with hazardous coasting or rundown time. The delayed safety outputs keep the guard locked until dangerous motion has ceased, while the undelayed outputs and signaling output coordinate downstream contactors and status indication. Its PL e / SIL 3 / Category 4 rating suits high-demand access-control safety functions. Screw terminals and IP40 DIN-rail mounting simplify installation into standard control panels.
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