Specifications Parameter Category Details Manufacturer Schneider Electric Complete Model Number VW3A5306 Product Type Integrated Braking Chopper & Resistor Module Compatible Drive Series Altivar 312, 312L, 32, 320, 340 and other models with compatible DC bus connections and control. Always verify compatibility with the specific drive model and firmware. Primary Function To safely dissipate regenerative energy from the motor during deceleration or when the load drives the motor (overhauling), thereby protecting the drive from overvoltage faults. Braking Power (Peak) Typically Up to 100 kW for short durations (duty cycle dependent). This is the peak power it can handle during the braking pulse. Continuous Braking Power Lower than peak power, defined by the resistor's thermal capacity and duty cycle. Resistance Value (Ohmic Value) A specific, low resistance value (e.g., in the range of 10 to 50 Ohms, depending on the drive power). The exact value is critical and must match the drive's requirements. Consult the technical guide for the precise value of VW3A5306. Duty Cycle Defined for specific applications (e.g., 10% or 20% duty cycle). This indicates the maximum time the resistor can be active within a given cycle without overheating. Connection Connects directly to the + and - DC bus terminals of the compatible VFD. Includes control wiring for the chopper IGBT gate signal. Enclosure / Protection Metal enclosure with cooling fins for heat dissipation. Protection rating typically IP20 (for installation inside a control cabinet). Thermal Protection May include an integrated thermal switch (normally closed contacts) that opens if the resistor overheats, which can be wired to a drive input to signal a fault and stop braking. Mounting Designed for vertical mounting on a panel or chassis to promote natural convection cooling. Adequate clearance around the fins is required. Operating Ambient Temperature Typically 0°C to +40°C (without derating). Higher temperatures reduce braking capacity. Storage Temperature -25°C to +70°C Typical Applications Conveyors with frequent starts/stops, centrifuges, winding machines, downhill conveyors, cranes/hoists, and any application where the motor acts as a generator.