Motor starting profile and trip class selection
The 3RW5216-3TC14 is a Siemens SIRIUS soft starter rated for 200-480 V supply voltage, with a minimum settable motor current of 14 A. This floor current means it suits smaller motors — typically 5.5-7.5 kW at 400 V — where the full-load current lands above 14 A. Trip class is configurable as CLASS 10A (default), 10E, or 20E per IEC 60947-4-2. CLASS 10A clears an overload in under 10 seconds at 7.2× Ie — standard for most pump and fan starts. In a 50 °C cabinet, expect the continuous current rating to drop — plan the enclosure ventilation or oversize the starter accordingly.
Fieldbus integration and control flexibility
This soft starter supports PROFIBUS, Modbus RTU, Modbus TCP, EtherNet/IP, and PROFINET (with PROFIenergy) — five protocols on one unit. No separate communication module needed for most networks; the onboard interface handles parameter access, start/stop commands, and fault logging. Remote reset is available by cycling the control supply voltage — useful for unattended restart after a fault. Auto-reset is also supported, though use it selectively on safety-critical lines. Pump ramp down is built in — a controlled deceleration profile that reduces water hammer on pump stop, extending valve and pipe life.
Physical mounting and panel layout
Dimensions are 170 mm wide, 275 mm high, 152 mm deep — a standard SIRIUS form factor that fits most 400 mm deep enclosures with room for wiring ducts. Screw fixing to the mounting plate; no DIN rail option. Clearance requirements: 100 mm above, 75 mm below, 10 mm front, 5 mm sides, 0 mm rear. The upward clearance is the tightest — plan the enclosure height so the top vent isn't blocked by a busbar or cable tray. Power terminals accept 1.0-2.5 mm² solid and 2.5-10 mm² stranded — covers standard motor cable sizes up to 10 mm² (roughly 8 AWG).
Sourced through authorized distribution channels. No stock-holding claim; availability verified per request. Compliance documentation includes CE marking, UL approval, and CSA approval — covers EU, US, and Canadian regulatory jurisdictions. No separate RoHS/REACH statement in the record, but the CE mark implies EU compliance.