What this part is and where it fits
The ABB 2TLA050202R0332 is a LineStrong2 pull-wire emergency stop switch — the type you run along a conveyor, transfer line, or machine cell where an operator needs to trigger a stop from any point along the span, not just a single pushbutton station. IP67 enclosure means the die-cast painted yellow housing and the contacts inside hold up to washdown, dust, and outdoor exposure — food processing, automotive paint lines, or aggregate handling are the usual installs. The wire span reaches up to 80 m, so one switch covers a long straight section without needing a second pull unit.
Contact rating and what it means for fit
The contacts are IEC/EN60947-5-1 double break Type Zb with silver contact material — that standard covers control-circuit switching for safety functions, so the contacts are rated for the reliability and forced opening required in emergency-stop circuits. Double break opens each pole in two places, aiding arc extinction on DC or low-AC voltage control circuits.
Mounting and enclosure integration
Mounts with four M5 bolts through the housing flanges — no DIN rail, so it bolts directly to a machine frame or stand-off bracket. Three M20 x 1.5 conduit entries give you room for incoming and outgoing cable runs plus a spare for a second pull direction or a signal lamp. Dimensions are 8.6 cm x 9.6 cm x 23.9 cm — the longest dimension is the depth behind the mounting surface, so check the clearance before you drill.