What the 'Tripped' message variant buys you
The 3RU2116-1JC0-ZW97 carries the note 'for message Tripped' — meaning it ships with an integrated auxiliary switch that closes a separate signal circuit when the overload relay trips. That gives the panel builder a dry-contact status back to a PLC input, annunciator lamp, or HMI without bolting on an extra auxiliary block. For a maintenance tech walking a line, that signal pinpoints which motor dropped off without opening the cabinet door.
Trip class and motor protection timing
That's the standard for general-purpose induction motors — the inrush during start clears before the thermal element accumulates enough heat to trip, but a locked-rotor condition gets caught fast enough to keep the winding insulation from cooking. The thermal overload release is temperature-compensated from -40 to +60 °C, so the trip curve doesn't drift when the panel ambient climbs on a summer afternoon or drops during a cold startup. That matters for a pump house or outdoor MCC where the internal cabinet temperature swings more than a climate-controlled server room.
Panel fit and wiring — Size S00 with spring terminals
Size S00 is the smallest SIRIUS overload relay footprint: 45 mm wide, 87 mm tall, 70 mm deep. It mounts directly onto the matching SIRIUS contactor (not on DIN rail) — the power connections pass through the contactor's own terminals, saving one wiring layer and a few inches of panel width. For a panel OEM packing multiple motor starters into a compact enclosure, that 45 mm per starter adds up fast. The auxiliary switch uses the same clamp style, so the whole relay wires with one tool.