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VW3A7742

The VW3A7742 is a braking resistor designed for use with Schneider Electric Altivar variable speed drives, specifically the Altivar Process ATV900 and Altivar Machine ATV340 series . Its primary function is to enable drives to operate safely when braking to a standstill by dissipating the braking energy generated during deceleration

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Technical Specifications (Parameters) Parameter Specification Product Type Braking resistor Product Range Altivar Range Compatibility Altivar Process ATV900, Altivar Machine ATV340 Ohmic Value 28 Ohm Average Power Available 0.96 kW at 50 °C or 1.1 kW Rated Operational Voltage [Ue] 24 V DC, 250 V AC Duty Cycle Severe cycle (heavy duty): <54 s braking with 100% braking torque for a 120 s cycle; Medium cycle (heavy duty): <4 s braking with 165% braking torque for a 40 s cycle Protection Type Thermal protection via drive or temperature control switch at 120 °C Electrical Connection Terminal, connection capacity: <= 10 mm² / AWG 8 for drive; Terminal, connection capacity: <= 2.5 mm² / AWG 12 for temperature control switch IP Degree of Protection IP20 Width 190 mm Height 570 mm Depth 180 mm Net Weight 4.2 kg Ambient Air Temperature for Operation 0…50 °C Ambient Air Temperature for Storage -25…70 °C Country of Origin Germany (DE) Sustainable Status Green Premium product (REACh free of SVHC, Toxic heavy metal free, Mercury free, RoHS compliant)