Product Overview

The Siemens 3RW4928-8VB00 is a high-efficiency auxiliary cooling fan specifically engineered for the SIRIUS 3RW402 soft starter series (Size S0). Within an ET 200SP motor starter configuration or a standalone motor control cabinet, heat accumulation can significantly degrade the performance of semiconductor components. This cooling module is designed to provide targeted airflow, effectively dissipating thermal energy generated during high-frequency switching or heavy-duty starting cycles. By maintaining an optimal operating temperature, the 3RW4928-8VB00 prevents thermal tripping and extends the overall service life of the soft starter hardware in demanding industrial environments.

Technical Architecture and Physical Attributes

Designed for seamless mechanical integration, this cooling accessory features a robust build and electrical specifications tailored for industrial power systems.

• Compatibility: Exclusively designed for SIRIUS 3RW402 soft starters (S0 Frame Size).

• Operational Voltage: 400 V AC nominal supply.

• Installation: Snap-on design for rapid integration without specialized tools.

• Thermal Management: Forced-air convection for enhanced heat dissipation under high-load conditions.

• Housing Material: Industrial-grade thermoplastic resistant to thermal stress.

• Equipment Weight: 0.12 kg.

• External Dimensions: 15.5 cm x 7.5 cm x 2.0 cm.

• Manufacturing Origin: Germany.

• HS Tariff Classification: 8537101190.

Professional Industrial Implementations

The 3RW4928-8VB00 is an essential component for motor control applications where continuous operation and thermal stability are critical.

• Pumping Stations: Ensuring reliable cooling for water and wastewater pumps that undergo frequent start-stop cycles, preventing downtime due to heat saturation.

• Conveyor Logistics: Maintaining thermal equilibrium in distribution centers where soft starters drive long-range belts under variable load conditions.

• Compressor Systems: Protecting soft starters in HVAC or industrial air systems that operate in high-ambient temperature environments.

• ET 200SP Motor Control: Integrating into decentralized automation stations where space-constrained cabinets require forced ventilation for reliable operation.

• Heavy Manufacturing: Supporting soft starters used in grinders and mixers where high-inertia starts generate significant instantaneous heat.