TELEMECANIQUE VW3A7703

Telemecanique 200W Braking Resistor for Altivar Drives

Description

The Telemecanique VW3 A7 703 is a high-quality braking resistor designed to dissipate regenerative energy from electric motors during deceleration. It is an essential accessory for variable frequency drives (VFDs), particularly in applications with high inertia loads or frequent braking cycles. This unit prevents drive overvoltage faults and ensures safe, controlled stopping of the motor. Manufactured in Germany, it offers reliable performance and excellent thermal management through its ventilated steel enclosure.

Specifications

• Manufacturer: Telemecanique (Schneider Electric)
• Model: VW3 A7 703
• Product Type: Braking Resistor
• Continuous Power Dissipation: 200 W
• Resistance Value: 28 Ohm
• Maximum Voltage: 600V
• Compatibility: Designed for Altivar 61 (ATV61) and Altivar 71 (ATV71) series drives

Label Info

• Part Number: VW3 A7 703
• Power (P): 200 W
• Resistance (R): 28 Ohm
• UL File: E226619

Application

This resistor is ideal for use in conveyor systems, centrifuges, hoisting equipment, and other industrial machinery where controlled braking is critical. It connects to the DC bus of the frequency drive to absorb excess energy and convert it into heat.

Country of Origin

Made in Germany

CO2 Impact

By choosing this pre-owned braking resistor, you are avoiding the emission of approximately 23.0 kg of CO2, which is associated with the production of a new unit. This saving is equivalent to the CO2 absorbed by a mature tree over a year.

Availability

This item is a reliable, tested component from our surplus stock. It is an excellent choice for replacing a faulty unit or for maintaining legacy systems. Order now from spareparts2day for expert support and fast delivery.

FAQ

What drives is the VW3 A7 703 compatible with?
This braking resistor is specifically designed for the older Telemecanique and Schneider Electric Altivar 61 (ATV61) and Altivar 71 (ATV71) series of variable frequency drives. It is not recommended for use with newer series without consulting the drive’s technical manual.

What is the IP rating of this resistor’s enclosure?
The VW3 A7 703 has a ventilated enclosure, which typically corresponds to an IP20 rating. This means it is protected against solid objects larger than 12.5mm but offers no protection against liquids. It must be installed inside a control cabinet with a higher IP rating.

Can multiple VW3 A7 703 resistors be connected in series or parallel?
Yes, it is possible to connect braking resistors in series or parallel to achieve a desired total resistance and power dissipation capacity. When connecting in series, the resistance adds up. In parallel, the total resistance decreases. Always ensure the final configuration meets the specific requirements of the drive’s braking chopper.

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Last Update: March 13, 2026