Direct starter, IP65, AS-Interface — what the ratings mean for fit
The Siemens 3RK1315-6NS71-0AA3 is a SIRIUS direct-on-line motor starter rated 4 kW at 400 V AC and 5 hp at 460/480 V, with Trip Class 10 thermal overload protection — meaning it will clear a stalled-rotor fault on a standard induction motor before the winding insulation degrades, which is the expected coordination for most conveyor, pump, and fan applications. The IP65 enclosure means the starter is sealed against dust ingress and low-pressure water jets — suited for washdown areas on packaging lines or food processing equipment where a panel-mounted starter would need an extra enclosure. Control power is 24 V DC (20.4 to 28.8 V range, max 31.6 V), and the unit communicates over AS-Interface for start/stop commands and diagnostics — no PROFIBUS or PROFINET onboard, so plan the fieldbus gateway accordingly. Four digital inputs are available for local sensors or limit switches, addressed via an M12 plug; the main circuit connects through a HAN Q4/2 connector per ISO 23570.
Mounting and environment — panel integration notes
Mounts by screw fixing in vertical, horizontal, or flat orientation — the recommended position is horizontal for optimal heat dissipation from the Trip Class 10 bimetal relay. Dimensions are 294 mm wide by 215 mm high by 159 mm deep — this is a standalone enclosure, not a DIN-rail module, so allocate panel door or subplate space accordingly. Rated for operation from -25 °C to +55 °C ambient, storage and transport from -40 °C to +70 °C. Shock rated at 12 g for 11 ms, vibration at 7 mm / 2 g — robust enough for machine-mounted installation on packaging or material-handling equipment.