Siemens 3RK1304 Motor Starter

Feature & Principle

It is a distributed motor starter of Siemens SIRIUS ET200pro series. It receives control commands from PLC through Profibus bus, realizes direct start or forward-reverse switching of three-phase motor. Built-in electronic overload protection monitors motor current, triggers trip for overload and phase loss fault. It integrates digital input channels for feedback signals, adopts high protection housing, suitable for installation near the motor, reduces control cabinet wiring.

Specifications

Model: 3RK1304 Brand: Siemens Series: ET200pro SIRIUS Rated voltage: 400VAC Max power: 5.5kW Protection type: Electronic overload protection Communication: PROFIBUS DP Protection class: IP65 Mounting: Field direct mounting Function: Direct starter / Reversing starter Certification: CE, UL, IEC

Components & Diagnostics

Contactor switching unit, electronic overcurrent detection circuit, Profibus communication interface, digital input terminal, status LED indicator, sealed metal plastic housing, quick connector socket. Common faults: communication offline, overload trip, contact burnout, no motor output, connector loose.

Product Brief

Siemens 3RK1304 distributed motor starter, industrial drive spare widely used for conveyor, pump and fan distributed automation system overhaul and replacement.