The Siemens 3RW4446-6BC44 is a high-performance soft starter for large three-phase motors. It supports standard connection at 356A or inside-delta at 617A. This model delivers up to 355kW mechanical power at 400V. It includes an integrated bypass contactor, thyristors, and comprehensive motor protection.
The Siemens 3RW4445-6BC44 is a high-feature soft starter for three-phase motors. It offers both standard and inside-delta connections. This model supports currents up to 542A and mechanical power up to 315kW at 400V. It includes an integrated bypass and motor overload protection.
The Siemens 3RW4444-6BC44 is a high-performance SIRIUS soft starter for large motors. It supports standard and inside-delta circuits, reaching 433A at 40°C in delta mode. This unit includes integrated bypass contacts, thyristors, and a motor brake output.
The Siemens 3RW4443-6BC44 is a SIRIUS soft starter for high-power motor applications. It supports standard and inside-delta circuits, reaching 352A at 40°C in delta mode. This unit includes integrated bypass contacts, thyristors, and a motor brake output.
The Siemens 3RW4436-6BC44 SIRIUS soft starter delivers reliable motor starting for 90kW (standard circuit) or 160kW (inside-delta) at 400V. It supports 200-460V AC main supply, 230V AC control supply, and includes an integrated bridging contactor and thyristors. Designed for harsh conditions, it operates at up to 60°C with current ratings adjusted accordingly.
The Siemens 3RW4426-1BC44 is a compact SIRIUS soft starter for medium-duty motors. It provides 77A at 400V in standard configuration. With inside-delta wiring, the current reaches 133A for 75kW output. This unit features an integrated bypass and screw terminals for easy installation.
The Siemens 3RW4458-6BC44 is a high-power SIRIUS soft starter for large three-phase motors. It delivers 970A at 400V in standard configuration. With inside-delta wiring, the current reaches 1680A for 1000kW output. This phased-out unit remains a solid choice for legacy system maintenance.
The Siemens 3RW4457-6BC44 is a SIRIUS soft starter for heavy three-phase motors. It handles 880A at 400V in a standard circuit. This unit includes an integrated bypass and thyristors. Note that this is a phased-out product.
The Siemens 3RW4456-6BC44 is a phased-out SIRIUS soft starter. It delivers 780A in standard circuits and 1351A in inside-delta. Rated for 200-460V AC motors, it supports 450kW to 800kW at 400V. The preferred successor is the 3RW5554-6HA14 from the SIRIUS 3RW5 series.
The Siemens 3RW4455-6BC44 is a high-power SIRIUS soft starter. It delivers 693A in standard circuits and 1200A in inside-delta connections. Rated for 200-460V AC motors, it supports 400kW to 710kW at 400V. The built-in bypass contactor reduces heat loss.
The Siemens 3RW4454-6BC44 is a SIRIUS soft starter designed for demanding motor control. It drives 615A in standard circuit or 1065A in inside-delta at 400V. Integrated bypass and thyristors reduce heat.
The ESMD222L4TXA from Lenze is a three-phase frequency inverter rated at 2.2 kW. It operates on a 400V AC supply and delivers 5.3 Amperes output current. This unit features a PI controller and supports Modbus RTU and CAN-BUS communication. Its constant torque design suits general purpose machinery such as pumps and conveyors.
