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Schneider Electric VW3A7791 — Motor Control Accessories

Schneider Electric VW3A7791 Braking Resistor, 6.7 Ohm 60 kW,

MPNVW3A7791
Obsolete

Schneider Electric Altivar series, braking resistor, VW3A7791, 6.7 Ohm, 60 kW at 40 °C, IP23, M10 terminal.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

VW3A7791 — Identification
ParameterValue
Product / component typeBraking resistor
Accessory typeBraking unit
Product rangeAltivar
VW3A7791 — Cable & Connector
ParameterValue
Electrical connectionM10 terminal
VW3A7791 — Mechanical
ParameterValue
Width1060 mm
Height1285 mm
Depth540 mm
VW3A7791 — Environmental
ParameterValue
IP protection ratingIP23
Operating ambient temperature-25...40 °C
Storage ambient temperature-25...70 °C
VW3A7791 — Other specifications
ParameterValue
Duty cycleSevere cycle (heavy duty) Severe cycle (normal duty) Severe cycle (heavy duty) Severe cycle (normal duty) <60 s braking with 120 % braking torque for a 200 s cycle
Ohmic value6.7 Ohm
Protection typeThermal protection via drive
Average power available60 kW at 40 °C

Product details

The Schneider Electric VW3A7791 is a braking resistor from the Altivar accessory range, designed to dissipate regenerative energy from a variable-frequency drive during deceleration. It carries a 6.7 Ohm resistance and is rated for 60 kW average power at 40 °C ambient, making it suitable for heavy-duty braking cycles on large motor loads.

Duty cycle and thermal management

The duty cycle is specified for severe service: heavy-duty and normal-duty cycles with braking torque up to 120 % over a 200 s cycle, with braking periods under 60 s. Thermal protection is handled by the drive itself, not by an internal thermostat — the drive monitors resistor temperature and current to prevent overload.

Physical integration and environment

Dimensions are 540 mm deep, 1060 mm wide, and 1285 mm tall — a floor-standing cabinet-style resistor, not a DIN-rail module. Electrical connection is via M10 terminals.

Frequently asked questions

What is the closest alternative to VW3A7791?

No official successor order code is listed in the manufacturer's records for this part. For a form-fit-function equivalent, the key parameters to match are 6.7 Ohm resistance, 60 kW average power at 40 °C, and the severe-duty braking cycle profile. Any replacement must also be compatible with the Altivar drive's braking circuit and thermal protection scheme.

Where can I buy VW3A7791?

The VW3A7791 is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at the time of quote.

What compliance documentation is available for VW3A7791?

The evidence does not list specific compliance certifications (RoHS, REACH, UL, IEC) for this part. The resistor is designed for integration into Altivar drive systems, which carry their own certifications; verify documentation requirements at the time of ordering.

MPN
VW3A7791