What the 4 kW and trip class 10 actually mean at 400 V
The 3RU2116-1JB0: Trip class 10 is the standard motor-start protection profile — ten seconds or less to trip at 7.2× the current setpoint — which fits direct-on-line induction motors up to that power band and rejects the brief inrush of a healthy start. That rating envelope is what decides the match to the upstream contactor: the relay snaps onto its mating contactor using the S00 footprint, so there is no separate DIN-rail bracket or wiring between coil and heater elements — the bi-metallic heaters sit directly in the contactor’s main-circuit path.
Auxiliary contact block and the ‘Tripped’ signal
The ‘Tripped’ message function drives that auxiliary contact, so a single pair of wires back to the PLC is enough to flag which motor protection has opened without an extra signaling relay.
Panel fit and ambient envelope
The body is 45 mm wide, 70 mm deep, and 76 mm tall — the S00 column width lets a row of starter assemblies stay on a standard 45 mm pitch grid inside the cabinet. Main-circuit connection is by screw terminals, with a Pozidriv PZ 2 tip and a 5 to 6 mm shaft, and the main-contact tightening screw is M3. Operating temperature spans −40 to +70 °C with compensated trip behavior across −40 to +60 °C, so the relay holds its setpoint across an unheated enclosure; storage and transport limits widen to −55 to +80 °C. Any mounting position is permitted, which matters when the starter is dropped into a tight柜 or a side-mounted bracket.
Sourcing posture
Availability and pricing are confirmed at RFQ, with no standing inventory claim made here.