The ABB 2TLA050003R0110 is an MKey5 SSH safety switch — a trapped-key interlock designed to guard access to hazardous machinery. Its 12 N holding force means the actuator stays locked until the key is turned, preventing the guard from opening while the machine is live. The IP67 rating tells you the switch body and head are sealed against dust and temporary immersion, so it holds up in washdown environments common to food-and-bev or chemical processing lines. The AC-15 A300 3A utilization category governs the switch's ability to handle inductive loads like contactor coils or solenoid valves at up to 300 VA. That 3 A rating is the make/break capacity under those conditions — not the continuous current. The thermal current Ith of 10 A is the continuous rating for resistive loads, so the switch can carry a 10 A heater circuit indefinitely without derating. Rated insulation voltage is 500 VAC with a withstand voltage of 2500 VAC. That means the switch is suitable for 400 VAC control circuits with a safety margin for transient overvoltages. The maximum approach or withdrawal speed of 600 mm/s sets the limit for how fast the actuator can be inserted or removed — exceed that and the mechanical interlock may not engage properly.
Construction and deployment context
Body is polyester; head is available in polyester or stainless steel 316. The stainless steel option is the one to specify for corrosive washdown zones — the 316 grade resists chlorinated cleaning agents. Three M20 x 1.5 conduit entries give flexibility for cable routing in a panel or junction box. Dimensions are 3.4 cm x 5.8 cm x 9.8 cm, a compact footprint that fits standard guard-mounting brackets. This is a trapped-key interlock, not a solenoid-lock. The key is physically captured until the machine cycle completes, then released to unlock the guard. It's the right choice for applications where a positive mechanical lock is required — rotating machinery, press brakes, or packaging lines where residual energy could open a solenoid lock prematurely.