Siemens Sirius Soft starter, spring, 200 - 480V, 110 - 250VAC, 93A Part number 3RW5527-3HA14

Product Overview

The Siemens 3RW5527-3HA14 is a soft starter from the SIRIUS 3RW55 series, designed for three-phase motor control and protection. It supports motor currents up to 93 A (at 200–480 V AC supply) and integrates a motor overload protection, bypass contact system and config­urable start, stop and torque limiting functions. Ideal for medium-power motors where soft-starting, current limiting and smooth shutdown are required.

Key Features

• Soft starter module for motor start and stop control with current limitation
• Rated operational current: 93 A at 40 °C (200-480 V AC)
• Designed for motor power rating around 45 kW at 400 V, 50 Hz
• Integrated bypass contact system to minimize dissipation during run mode
• Adjustable parameters: start ramp time, stop ramp time, break-away pulse, current limit, torque limit
• Electronic motor overload protection and thermistor input for direct motor temperature monitoring
• Spring-loaded terminals in control circuit for secure wiring; box terminals for main circuits
• Monitoring and diagnostic functions: event log, error logbook, analog output for output current, condition monitoring

Technical Specifications

• Article Number: 3RW5527-3HA14
• Series / Type: SIRIUS 3RW55 soft starter
• Supply Voltage (Motor Circuit): 200…480 V AC, 3-phase
• Control Supply Voltage: 110…250 V AC
• Rated Operational Current (Ie) at 40 °C: 93 A
• Motor Rated Power (approx.): 45 kW at 400 V, 50 Hz; 22 kW at 230 V
• Start Ramp Time: 0…360 s (adjustable)
• Stop Ramp Time: 0…360 s (adjustable)
• Current Limit Setting: 125…800 % of Ie (adjustable)
• Torque Limitation: 20…200 % (adjustable)
• Rated Insulation Voltage (Ui): 480 V
• Protection Class (Front): IP00, IP20 with appropriate cover
• Ambient Operating Temperature (Operating): –25 °C…+60 °C
• Weight (approx.): ~7.15 kg

Compliance & Certifications

• Complies with IEC 60947-4-2 for soft starters and power electronic motor controllers
• Includes CE mark and UL/CSA approvals
• Designed for industrial use in motor feeder and control applications requiring soft-starting, overload protection and diagnostics

Applications

This soft starter is ideal for medium-power three-phase motors in industrial applications where smooth start/stop, reduced starting current, and motor protection are required. Typical uses include conveyors, pumps, fans, compressors, mixers, and other machines where reducing mechanical and electrical strain during motor start-up and shutdown is important.