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VW3A7703

The VW3A7703 is a braking resistor accessory manufactured by Schneider Electric for use with Altivar variable speed drives. It is designed to dissipate the braking energy generated when a motor decelerates, helping the drive system safely slow to a stop and enabling higher transient braking torque.

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Parameters General Product Type: Braking resistor Manufacturer: Schneider Electric Model: VW3A7703 Protection Rating: IP20 (indoor use, protection against solid objects >12 mm) Electrical Characteristics Resistance Value: 28 Ω (at 20 °C) Power Rating: 200 W average at 50 °C (approx. 231 W at 40 °C) Rated Operational Voltage: • 24 V DC @ 0.1 A • 250 V AC @ 1 A Thermal Protection: Via drive or temperature‑controlled switch (~120 °C) Connection: Screw terminal • <= 1.5 mm² / AWG 16 for temp control switch • <= 4 mm² / AWG 28 for drive connection Mechanical / Environmental Net Weight: ~3.5 kg Dimensions: • Width ≈ 140 mm • Height ≈ 393 mm • Depth ≈ 120 mm Ambient Operating Temperature: 0…50 °C Ambient Storage Temperature: –25…70 °C Country of Origin: Germany (typical for this part designation) Compatibility Compatible with Altivar variable speed drives, including but not limited to ATV312, ATV31C, ATV32, ATV61, and ATV71 series.