What this switch is for
The ABB 2TLA050003R0100 is an MKey5 safety interlock switch — a trapped-key device that physically locks a guard closed until the machine cycle is safe to open. The 12 N holding force keeps the key engaged against vibration and light impact, and the IP67 seal means the switch body and head survive washdown and cement dust without ingress. That polyester body eats the dust and runs; the stainless steel 316 head option stands up to caustic cleaning chems in food or pharma lines.
Rated for the heat, not the office
The AC-15 A300 3A utilization category tells you this switch is rated for inductive loads — solenoids, contactor coils, small motor starters — at up to 300 VAC and 3 A make/break. The thermal current (Ith) of 10 A covers the continuous current through the contacts regardless of load type. Rated insulation voltage of 500 VAC and withstand of 2500 VAC give headroom for 400 VAC panels without creepage concerns.
Three M20 x 1.5 conduit entries give you options for cable routing — one in, one out, one spare for future expansion. The 3.4 cm x 5.8 cm x 9.8 cm footprint fits standard machine guard frames. Maximum approach/withdrawal speed of 600 mm/s means the actuator can move fast without damaging the switch mechanism; that's typical for sliding or hinged guards on packaging and material handling lines.