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Schneider Electric ATV71HD18N4

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  • 2 Year Warranty
Part NumberATV71HD18N4
ManufacturerSchneider Electric
TypeAC Drives
Warranty2 Year
ApplicationComplex, high-power machines
Phase3 phase
Motor power kW18.5 kW, 3 phase 380...480 V
Maximum HP Rating25 hp, 3 phase 380...480 V
Power supply voltage380...480 V - 15...10 %
Line current37.5 A 480 V 3 phase 18.5 kW / 25 hp, 45.5 A 380 V 3 phase 18.5 kW / 25 hp
Assembly styleWith heat sink
Prospective line Isc22 kA 3 phase
Nominal switching frequency4 kHz
Output frequency0.1…599 Hz
Nominal output current34 A 4 kHz 460 V 3 phase 18.5 kW / 25 hp, 41 A 4 kHz 380 V 3 phase 18.5 kW / 25 hp
Maximum transient current61.5 A 60 s 3 phase 18.5 kW / 25 hp, 67.7 A 2 s 3 phase 18.5 kW / 25 hp

Our Repair Services

MRO Electric repairs CNCs, PLCs, Servo/Spindle Drives, Motors, Amplifiers, VFDs, HMIs, and more, most of which can be repaired in only 3-5 days.

Repair Benefits

MRO can restore your failed ATV71HD18N4 to remanufactured condition and save you up to 75% compared to buying new. We offer standard repair pricing to ensure you the best value for your repair.

Our certified technicians use rigorous testing procedures to ensure your parts are restored to fully functioning condition. Our team proudly stands behind all repairs by providing a minimum 2-year warranty.

Our technicians have vast experience with most manufacturers and models. In addition to this ATV71HD18N4 we also repair drives, motors, PLCs and more, so if you don’t see the model you need, please contact us.

Core Exchange

If you are interested in getting credit for your faulty ATV71HD18N4, just let us know, and we can issue you an RMA to send it in as an exchange. Our exchange program provides you with savings and keeps us stocked for the next time you need anything.

  • Shipping Weight : 33lbs

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Ask about exchanging your faulty ATV71HD18N4 for credit when ordering from MRO Electric

MRO Electric provides a 2-year warranty on every item we sell and repair. We stand behind all of our products and guarantee them for the full 2 years. If there is an issue with any of our products within the warranty period, we will evaluate the unit and repair or replace it under warranty.

Schneider Electric ATV71HD18N4 Overview

The Altivar 71 module ATV71HD18N4 is a variable speed drive, and it is a 480 V, three-phase unit that is available by Schneider Electric. The Schneider Electric ATV71HD18N4 can be used for controlling asynchronous motors in sensor/sensorless flux vector control mode.  The ATV71HD18N4 Altivar 71 comes ready to operate numerous extendable functions as well as integrating the Modbus and CANopen protocols as standard. Using external option modules with the Schneider Electric ATV71HD18N4 is simple. This module is an 18.5kW/25 HP to 480 V. The Schneider Electric ATV71HD18N4 variable speed drive has an EMC filter, and it also has an IP rating of IP 20. These products are manufactured in France and are designed for Material handling, packaging, and textile machines usage. They come with a 2-year warranty from MRO Electric. We also carry AC Drives from other manufacturers such as Modicon and ABB.


Manufactured for complex, high power machines, the variable speed drive as a motor power of 18.5 kW, 3 phase 380...480 V. The maximum Horse Power Rating is 25 hp, 3 phase 380...480 V. The power supply voltage for the Schneider Electric ATV71HD18N4 is 380...480 V - 15...10 %. The line current for the ATV71HD18N4 is 37.5 A 480 V 3 phase 18.5 kW / 25 hp, 45.5 A 380 V 3 phase 18.5 kW / 25 hp. The assembly style for the Schneider Electric variable speed drive is with a heat sink and it has an integrated EMC filter. The apparent power is 29.9 kVA 380 V 3 phase 18.5 kW / 25 hp for the ATV71HD18N4. The output frequency is 0.1…599 Hz. The nominal switching frequency for this variable speed drive is 4 kHz.


The Schneider Electric ATV71HD18N4 variable speed drive has one diagnostic LED. The LED (red) is an indicator for the drive voltage. There are 2 analog inputs and one analog output.

The input type for the Schneider Electric ATV71HD18N4 variable speed drive is:

AI1-/Al1+ bipolar differential voltage +/- 10 V DC 24 V max 11 bits + sign

AI2 software-configurable current 0...20 mA 242 Ohm 11 bits

AI2 software-configurable voltage 0...10 V DC 24 V max 30000 Ohm 11 bits

The output type for this variable speed drive module is:

Configurable relay logic R1A, R1B, R1C) NO/NC - 100000 cycles

Configurable relay logic R2A, R2B) NO - 100000 cycles

There are 7 discrete inputs. The discrete input type for this variable speed drive is LI1...LI5 programmable 24 V DC level 1 PLC 3500 Ohm

LI6 switch-configurable 24 V DC level 1 PLC 3500 Ohm

LI6 switch-configurable PTC probe 0…6 1500 Ohm

PWR safety input 24 V DC 1500 Ohm ISO 13849-1 level d.

The discrete input logic for the Schneider Electric ATV71HD18N4 is Negative logic (sink) LI1...LI5), > 16 V, < 10 V

Positive logic (source) LI1...LI5), < 5 V, > 11 V

Negative logic (sink) LI6) if configured as logic input, > 16 V, < 10 V

Positive logic (source) LI6) if configured as logic input, < 5 V, > 11 V

The communication port protocol for the Schneider Electric variable speed drive is Modbus and

CANopen. There are three connector types for the ATV71HD18N4. These connectors are 1 RJ45 on the front face) Modbus 1 RJ45 on the terminal) Modbus and Male SUB-D 9 on RJ45CANopen.

Contact Us Today For More Information About Schneider Electric Products

Check out the rest of our Schneider Electric product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or emailing us at, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like ATV71HD18N4, take a look at more from our AC Drives line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our ATV71HD18N4 products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.

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Over 1700 Ratings from Actual Customers

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Very happy with the overall service, delivery, communication and delivery,

Conley Cooke

I needed a special drive, found it, and I was quickly assisted by Joe Kaminski. Everything was exactly as it should be....


We have an older DMU80 CNC Machine and the Handheld Control was damaged beyond repair. MRO was very helpful in confirmin...

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