Schneider ATV320D11N4B 11kW VFD — Specs, Variants & Buyer Guide

By Abdullah Zahid
14 min read
Schneider Electric ATV320D11N4B Altivar Machine 11kW three-phase variable speed drive for packaging and conveyor control

Schneider ATV320D11N4B Variable Speed Drive, Altivar Machine ATV320, 11kW, 380 to 500V, 3 Phases — Specifications, Pricing, and Alternatives

Controls engineers and procurement specialists searching for the Schneider ATV320D11N4B are typically at one of two moments: verifying that this 11kW three-phase drive matches a motor they need to control, or replacing an existing unit and checking whether a direct swap is correct. The ATV320D11N4B is a three-phase AC variable speed drive in the Altivar Machine ATV320 family, rated for 11kW continuous duty on a 380 to 500V supply, with Class 10 overload protection and integral soft-start and DC injection braking. Getting the power rating and phase configuration right at the order stage is everything — this article exists to help you confirm both before committing to a purchase order.

If you have already confirmed this is the right part, check current pricing and availability at LeadTime.ca — ships worldwide.

Who Should Buy the ATV320D11N4B — and Who Shouldn't

The ATV320D11N4B is the right drive if all of the following apply to your application:

  • Your facility provides stable three-phase 380 to 500V AC power at 50 or 60 Hz
  • Your motor nameplate power does not exceed 11kW continuous duty
  • Your motor is AC induction (asynchronous) or synchronous — both are supported
  • The drive will be installed indoors in a dry, clean control cabinet where IP20 rating is sufficient
  • Your application benefits from soft-start ramp acceleration and DC injection braking without requiring advanced fieldbus beyond Modbus RTU
  • You are specifying for packaging, material handling, conveyor, pump, fan, or light machine-tool duty

If your motor exceeds 11kW, step up to the ATV320D15N4B (15kW) or ATV320D22N4B (22kW). If you have single-phase input only, or if your environment involves washdown spray or outdoor exposure, this drive is the wrong choice — a different ATV320 phase variant or the Altivar Machine IP65 series is required.

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What the ATV320D11N4B Does in a Motor Control System

The ATV320D11N4B sits between your facility's three-phase power supply and the motor it controls, acting as the authority over motor speed and torque from 0 to 100% of rated output. Rather than running a motor at fixed line frequency, this drive converts the incoming 380 to 500V three-phase AC into a variable-frequency, variable-voltage PWM output — allowing the connected motor to accelerate smoothly, hold speed under varying load, and decelerate in a controlled manner without mechanical shock.

Two firmware-integral features define this drive's practical value in industrial installations. Soft-start ramp acceleration reduces inrush current stress on the motor and driven equipment, which extends winding and bearing life on legacy motors. DC injection braking allows the drive to hold the motor shaft at rest by injecting DC current into the stator — critical for vertical hoist applications where the load must not drift when the speed command is removed. Both features are included without external accessory modules, which lowers system cost and cabinet complexity.

Class 10 overload protection, confirmed in Schneider Electric's official ATV320 datasheet, allows the drive to tolerate 150% of rated load for 60 seconds without a nuisance trip. On variable-torque applications — conveyors hitting a product surge, mixers encountering thick media, or pumps starting against a closed valve — this tolerance is the difference between continuous operation and an unplanned shutdown.

Typical System Architecture for the ATV320D11N4B

The ATV320D11N4B occupies the speed regulation layer in a standard motor control architecture, sitting downstream of the incoming feeder and upstream of the motor terminals. A typical installation chain looks like this:

  • Three-phase 380 to 500V AC supply breaker or disconnect — feeds the drive's input terminals; breaker must be sized for 36.6A input current at 380V
  • Optional line reactor — recommended in high-noise environments (welding bays, heavy motor startup areas) to suppress EMI per EN 61326 requirements
  • ATV320D11N4B drive — converts fixed-frequency supply to variable-frequency PWM output rated at up to 27.7A output current
  • Three-phase motor cable — carries PWM output to motor terminals; size cable for 27.7A output rating
  • AC induction or synchronous motor up to 11kW — driven load (conveyor, pump, fan, spindle, hoist)
  • PLC or control system — provides speed reference and run/stop commands via Modbus RTU or discrete I/O to the drive's control terminals

Industries and Applications Where This Drive Is Specified

The ATV320D11N4B is consistently specified in packaging machinery where multiple drive units must run at coordinated speeds across a production line. The 11kW rating covers most form-fill-seal, case erector, and labeling machine motors without the cost overhead of a larger drive frame.

Material handling integrators select this drive for conveyor belt speed control in warehouse and distribution environments. The soft-start ramp prevents product spillage or mechanical jerk at startup, while DC injection braking provides controlled stops that protect both conveyor structure and transported goods.

Centrifugal pump and HVAC fan applications benefit directly from the ATV320D11N4B's ability to match motor speed to actual flow or pressure demand. Running a pump at 70% speed rather than full speed on a throttling valve reduces energy consumption and extends pump seal life — the dual 50/60 Hz frequency support means a single SKU covers both North American and international installations.

Machine-tool builders specifying spindle drives for light cutting operations and automotive component assembly integrators building end-of-line test stations both use this power class. The Class 10 overload tolerance accommodates the momentary load spikes typical of tool engagement without tripping the drive during a production run.

Application Typical Deployment
Conveyor belt speed control Warehouse automation — soft-start ramp and DC injection braking prevent product spillage and control stopping
Packaging machine motor control Form-fill-seal and labeling lines — coordinated speed across multiple drive units via Modbus RTU
Centrifugal pump speed optimization Water treatment and HVAC — variable speed matches flow demand, reducing energy and seal wear
Machine-tool spindle speed management Light cutting and assembly stations — soft start reduces electrical stress on legacy motor windings
Vertical hoist and lift Industrial hoists — DC injection braking holds motor shaft at rest and prevents load drift
Food processing conveyors Dry process areas only — IP20 requires sealed cabinet; IP65 series required for washdown lines

Key Specifications and Technical Ratings

Parameter Value Notes
Rated Power 11kW (15 HP) Continuous duty; do not connect motors exceeding this rating
Input Voltage 380–500V AC, 3-Phase -15% to +10% tolerance per Schneider specification
Supply Frequency 50/60 Hz -5% to +5% tolerance; single SKU for both North American and international supply
Input Current (Heavy Duty) 36.6A at 380V / 25.6A at 500V Size incoming breaker and feeder cable accordingly
Output Current Max 27.7A Size motor lead cable and thermal protection to this rating
Output Voltage 0–500V PWM Variable frequency and voltage for motor speed control
Switching Frequency 4 kHz default Affects motor temperature rise and EMI generation
Overload Protection Class Class 10 150% load for 60 seconds without nuisance trip — IEC-standardized specification
IP Rating IP20 Indoor, dry control cabinet only; not rated for washdown or outdoor without additional enclosure
Motor Types Supported AC Induction (Asynchronous) and Synchronous Confirm motor type from nameplate before commissioning

Full technical specifications are available on the product page at LeadTime.ca.

ATV320D11N4B vs. Other ATV320 Power Variants

The Altivar Machine ATV320 family spans multiple power ratings sharing the same firmware, commissioning interface, and physical form factor. Selecting the correct power variant is the single most consequential ordering decision for this product family.

Model Power Rating Input Phase Typical Application When to Choose
ATV320D05N4B 5.5kW 3-Phase, 380–500V Small conveyors, light pumps Motor nameplate is 5.5kW or below
ATV320D11N4B 11kW (this model) 3-Phase, 380–500V Packaging, material handling, machine tools Motor nameplate is up to 11kW; three-phase supply confirmed
ATV320D15N4B 15kW 3-Phase, 380–500V Larger conveyors, heavier pumps, higher-torque machines Motor nameplate exceeds 11kW or thermal headroom is needed for variable-duty loads
ATV320D22N4B 22kW 3-Phase, 380–500V Mid-range machine tools, large material handling Motor nameplate is 15–22kW; planning capacity expansion within 18–24 months
Altivar Machine IP65 series Various 3-Phase Washdown, food/beverage, outdoor Environment involves moisture, spray, dust, or corrosive vapor — IP20 insufficient

If your motor nameplate shows 15kW or if your application runs at high duty cycle with intermittent overloads, the ATV320D15N4B is the safer choice — check current availability and speak with the LeadTime.ca team to confirm the right variant for your system.

Expert Verdict: Is the ATV320D11N4B Worth Buying?

The ATV320D11N4B earns its place on the bill of materials for plant engineers and OEM equipment designers who need a reliable, straightforward three-phase variable speed drive for motors up to 11kW. Its Class 10 overload tolerance — permitting 150% load for 60 seconds — is not a marketing claim but an IEC-standardized specification verified in Schneider Electric's own documentation, and it matters practically on conveyor and mixer applications where product surges create momentary load spikes. The inclusion of both soft-start ramp and DC injection braking as firmware-integral features, without requiring additional accessory modules, lowers cabinet cost and commissioning time. Dual 50/60 Hz support makes this a single SKU for multinational OEMs building equipment for both North American and European markets.

Where the ATV320D11N4B has clear limits: it is not the right drive if your motor exceeds 11kW continuous duty — thermal overloading will occur and the drive will trip or fail under sustained load. It is also not suitable for washdown, corrosive vapor, or outdoor environments without an additional sealed enclosure, as the IP20 rating offers no protection against moisture ingress. Applications requiring coordinated multi-drive synchronization via advanced fieldbus protocols beyond Modbus RTU, or facilities planning to upgrade motor size beyond 11kW within the next 18 to 24 months, would be better served by the ATV320D15N4B or ATV320D22N4B from the outset. Selecting the next power step up now avoids a complete drive replacement during a future upgrade cycle.

From a procurement standpoint, the ATV320D11N4B is not a component that benefits from being sourced through a generic online channel. Pre-sale compatibility verification — confirming motor type, input voltage tolerance, and terminal type before the purchase order is placed — prevents the most costly outcomes: wrong-part returns, project delays, and installation faults on first power-up. Typical distributor lead times run two to four weeks for authorized stock, and that window narrows significantly when working with a specialist who holds regional inventory. For volume orders or time-critical builds, check current pricing and lead time directly on the product page at LeadTime.ca — the team ships worldwide and can confirm availability before you commit to your project schedule.

For volume pricing or to confirm lead time before committing to a build, contact the LeadTime.ca team directly — we ship worldwide.

What Engineers Need to Know Before Ordering the ATV320D11N4B

Because the ATV320D11N4B is a specification-driven B2B industrial component rather than a product with a large consumer or hobbyist user base, public forum discussions and peer reviews for this specific model are essentially nonexistent. Engineers specifying this drive are not searching Reddit or automation forums for reassurance — they are working from datasheets, motor nameplates, and distributor technical consultations. That means the pre-order mistakes that do occur are not widely documented in community threads; they surface instead as warranty inquiries, return requests, and commissioning support calls. The patterns are well understood by distributors who handle this product family regularly, and they follow predictable categories.

The most common ordering error in the ATV320 family is phase configuration mismatch — receiving a single-phase unit when three-phase was required, or vice versa. Part numbers in the ATV320 family differ by power rating, and engineers under deadline pressure occasionally transpose digits when entering catalog numbers into a purchase order. The ATV320D11N4B (11kW, three-phase) is distinct from the 5.5kW variant (ATV320D05N4B) and the 15kW variant (ATV320D15N4B); these look similar in a parts list but represent meaningfully different electrical ratings. A specialist distributor will catch this mismatch at order entry when the purchase order comment field includes motor nameplate data — a simple precaution worth building into your standard ordering procedure.

Environmental rating confusion is the second most consequential pre-purchase mistake. IP20 is a dry, indoor cabinet rating. Engineers who specify this drive for a food processing line with periodic washdown, or for a panel located in a humid pump house, may not discover the mismatch until the drive fails. Schneider's Altivar Machine IP65 series exists precisely for those environments — if there is any doubt about moisture exposure, the correct answer is to specify the IP65 family, not to rely on the cabinet's sealing alone. LeadTime.ca's pre-sale consultation process is designed to surface this question before the order is placed, not after the drive is installed.

Wiring and Installation Overview

The following points cover the key requirements and checks for a standard ATV320D11N4B installation. For full wiring diagrams and step-by-step commissioning procedures, consult the official Schneider Electric Altivar Machine ATV320 installation manual.

  • Input power connection: three-phase 380 to 500V AC supply must be connected to the drive's L1, L2, L3 input terminals; incoming feeder and breaker must be sized for 36.6A at 380V input current
  • Motor output connection: three-phase motor leads connect to T1, T2, T3 output terminals; cable must be rated for 27.7A output current and appropriate for PWM switching frequency
  • Mounting orientation: install vertically in a control cabinet with a minimum 10cm airflow clearance above and below the drive to support passive convection cooling; ambient temperature must not exceed 50°C (derating applies above 40°C)
  • Control wiring: speed reference and run/stop commands connect via discrete I/O terminals or Modbus RTU interface; verify control voltage levels match the drive's input specification before energizing
  • EMC consideration: in high-noise environments such as welding areas or facilities with multiple large motor startups, an external line reactor is recommended at the input to meet EN 61326 industrial immunity requirements

Wrong-Part Prevention Checklist

Before finalizing your purchase order for the ATV320D11N4B, verify each of the following against your motor nameplate and facility power documentation:

  1. Confirm your facility provides three-phase 380-500V power; if you have single-phase input, this is the wrong model.
  2. Verify motor nameplate power does not exceed 11kW continuous; if motor is rated 15kW or higher, select a larger drive.
  3. Check motor type: is it AC induction (asynchronous) or synchronous? ATV320D11N4B supports both; most factory motors are induction, but specialty spindles may differ.
  4. Confirm indoor, dry, cabinet-mounted installation; if drive will face water spray, dust ingress, or outdoor conditions, IP20 is insufficient.
  5. Check if DC injection braking is required for your load (e.g., vertical hoist); this drive supports it but affects commissioning.
  6. Ensure you are not confusing this 11kW model with the 5.5kW (ATV320D05N4B) or 15kW (ATV320D15N4B) variants; part numbers differ by power rating.

If any item on this checklist raises a question, contact the LeadTime.ca team before placing your order — confirming compatibility at the order stage is faster and less expensive than a wrong-part return.

Frequently Asked Questions

Can the ATV320D11N4B be used with a single-phase 230V supply if a transformer steps it up to 400V three-phase?

No. The ATV320D11N4B requires a genuine three-phase 380 to 500V supply at its input terminals. A single-phase source converted via a phase converter may not provide the balanced three-phase waveform the drive's internal rectifier requires, and operating the drive outside its specified input conditions will void the warranty and risk internal damage. If single-phase input is your only available source, a different drive variant designed for single-phase input is required.

What happens if my motor occasionally exceeds 11kW peak during acceleration — will the drive shut down or tolerate it?

The ATV320D11N4B's Class 10 overload protection, confirmed in Schneider Electric's official datasheet, allows 150% of rated load for 60 seconds before the drive trips. This means short-duration overloads during motor acceleration or load surges are handled without nuisance shutdown. However, sustained operation above the 11kW continuous rating will cause the drive to overheat and eventually fault. If your application regularly demands more than 11kW, select the ATV320D15N4B to provide adequate thermal headroom.

Is the ATV320D11N4B a direct replacement for an existing 11kW Altivar drive without rewiring the enclosure?

Within the Altivar Machine ATV320 family, drives of the same power rating share a consistent terminal layout and commissioning interface, making like-for-like replacement straightforward in most cases. However, terminal type selection (book flat vs. screw terminal) can affect cable routing in an existing panel. Confirm the terminal type of the installed unit before ordering the replacement to avoid rework. If replacing from a different Altivar generation, consult the Schneider Electric migration guide for dimensional and wiring differences.

Does the ATV320D11N4B require an external braking resistor for DC injection braking on a hoist application?

DC injection braking is an integral firmware feature of the ATV320D11N4B and does not require an external braking resistor for standard operation. However, for vertical hoist applications with significant regenerative energy — where the load drives the motor during lowering — an external braking resistor may be required to dissipate that energy safely. Consult the Schneider Electric Altivar Machine ATV320 application manual for hoist-specific configuration parameters and resistor sizing guidance.

What does the LED fault indicator on the ATV320D11N4B show, and how do I interpret a fault during commissioning?

The ATV320D11N4B includes an LED status display that indicates drive state and fault conditions during operation and commissioning. A green steady LED typically indicates normal run state, while a flashing or red indicator signals a fault condition. Specific fault codes appear on the drive's integrated display and correspond to conditions such as input voltage out of range, motor overload, phase loss, or overtemperature. The complete fault code reference is documented in the Schneider Electric ATV320 programming and commissioning manual; if a fault code appears during initial startup, document it before cycling power so that the distributor or technical support team can assist with diagnosis.

What is the typical lead time and pricing for the ATV320D11N4B when ordering through an authorized distributor?

Authorized distributors with regional stock typically deliver within two to four weeks for standard orders. Lead times can extend to eight weeks depending on terminal type selection and broader supply chain conditions — the book flat and screw terminal variants may have different stock availability. Pricing is available on the product page and varies by order quantity, with volume discounts typically available for orders of five or more units. Contact LeadTime.ca directly for current pricing and confirmed lead time before finalizing your project schedule.

Why Order From LeadTime.ca

  • Global shipping: LeadTime.ca ships the ATV320D11N4B worldwide — no geographic restriction on sourcing
  • Pre-sale technical consultation: the team verifies motor power rating, phase configuration, and terminal type before the order is placed, preventing wrong-part returns
  • Authorized distributor access: regional stock availability reduces lead time compared to direct or gray-market channels
  • Volume pricing: contact for current pricing on orders of multiple units — discounts are available and not listed publicly
  • Post-sale support: commissioning questions and fault diagnosis support available through the distributor channel, not just manufacturer hotlines

At-a-Glance Summary

  • Official product: Variable Speed Drive, Altivar Machine ATV320, 11kW, 380 to 500V, 3 Phases
  • Catalog number: ATV320D11N4B — confirm D11 in part number for 11kW three-phase variant
  • Input: 380–500V AC, three-phase, 50/60 Hz; maximum input current 36.6A at 380V
  • Output: up to 27.7A; 0–500V PWM at 4 kHz switching frequency default
  • Class 10 overload: 150% load for 60 seconds — IEC-standardized, not a marketing claim
  • Integral soft-start ramp and DC injection braking — no external modules required
  • Supports both AC induction (asynchronous) and synchronous motors
  • IP20 rating: indoor, dry, cabinet-mounted installations only
  • Dual 50/60 Hz support: single SKU for North American and international projects
  • Step up to ATV320D15N4B (15kW) or ATV320D22N4B (22kW) if motor exceeds 11kW
  • Typical authorized distributor lead time: two to four weeks for stocked variants

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