PRODUCT DESCRIPTION
SIEMENS 3RW4038-1BB04 - Soft Starter
The SIEMENS 3RW4038-1BB04 is a SIRIUS 3RW40 series solid-state soft starter engineered for the controlled acceleration and deceleration of three-phase asynchronous motors. It employs thyristor-based voltage control to mitigate mechanical shock and current surges during motor startup and shutdown. This device is suitable for integration into industrial control panels for applications such as pumps, fans, conveyors, and general machinery.
Technical Specifications:
- SERIES/FAMILY: SIRIUS 3RW40
- COMPONENT TYPE: Soft Starter
- ELECTRICAL SPECS:
- OPERATIONAL VOLTAGE (MAIN CIRCUIT): 200-480V AC, 3-phase
- OPERATIONAL CURRENT (RATED): 38 A (at 400V, standard duty)
- CONTROL SUPPLY VOLTAGE: 24V AC/DC
- POWER RATING: 18.5 kW (at 400V, standard duty)
- FREQUENCY: 50/60 Hz
- MECHANICAL/PHYSICAL:
- FORM FACTOR: Compact, industrial enclosure
- TERMINALS: Screw terminals for main and control circuits
- INTERFACE/CONTROL:
- CONTROL TYPE: Solid-state, thyristor-based
- INTEGRATED FUNCTIONS: Adjustable ramp-up/ramp-down times, current limiting
- PROTECTION FUNCTIONS: Integrated motor overload protection (adjustable), intrinsic device protection
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP00 (terminal area), IP20 (front side)
- COOLING METHOD: Natural convection
- MOUNTING STYLE: DIN rail or screw mounting
- COMPATIBILITY/APPLICATION:
- MOTOR TYPE: Three-phase asynchronous motors
- APPLICATIONS: Conveyor systems, pumps, fans, compressors, mixers, and general machinery requiring controlled motor starting and stopping