Delta MS300 Variable Frequency Drives
Compact Delta MS300 AC drives for variable-speed motor control. Find standard models by input supply, enclosure rating and EMC filter configuration, with complete ordering codes listed below.
- VFD11AMS21ANSAA
- VFD11AMS21AFSAA
- VFD9A0MS43ANSAA
- VFD9A0MS43AFSAA
- VFD17AMS43ANSAA
- VFD25AMS43ANSAA
The Delta MS300 VFD is a compact inverter for variable-speed AC motor control. Use this page to identify standard MS300 models and compare input supply, enclosure and EMC filter options before ordering. Keep the complete part number when checking a drive: matching only the MS300 series name is not enough to establish suitability.
MS300 series functions and configuration
The series supports induction and permanent-magnet motor control, with an integrated PLC and USB connectivity. Delta also provides communication option cards. Specify the required network and check the appropriate card and drive combination rather than assuming every protocol is built in.
For parameter access while a drive is operating on a Modbus network, Delta identifies the MS300 USB connection as a separate access route from the Modbus connections. Follow the relevant communication instructions for the selected drive. See Delta’s communication FAQ.
Choose the correct MS300 model
Start with the actual supply voltage and phase count. The voltage labels below are catalogue classes, not a substitute for checking the permitted input range on the drive nameplate and in the manual. Then confirm the motor data, load duty, installation space, enclosure requirement and required interfaces.
For example, VFD11AMS21ANSAA and VFD11AMS21AFSAA are both listed as IP20 models in the 230 V single-phase input group. The AFSAA version includes an EMC filter; the ANSAA version does not. This difference should be considered alongside the installation requirements, not treated as an interchangeable suffix.
MS300 high-speed and IP66 versions are separate selections within the family. The tables on this page cover standard IP20/IP40 models; check the dedicated type and complete ordering code when a high-speed or higher-enclosure-protection version is required.
Delta MS300 standard model numbers
Motor capacities below are catalogue references, not a substitute for checking drive output current and load duty. Each entry is a complete ordering code; compare its configuration with the existing equipment or project requirements before selection.
115 V class, single-phase input
IP20 enclosure; no built-in EMC filter.
| Complete model number | Catalogue motor capacity (kW) | Enclosure | Built-in EMC filter |
|---|---|---|---|
| VFD4A8MS11ANSAA | 0.75 | IP20 | No |
230 V class, single-phase input
Compare the EMC filter configurations within each model pair.
| Complete model number | Catalogue motor capacity (kW) | Enclosure | Built-in EMC filter |
|---|---|---|---|
| VFD1A6MS21ANSAA | 0.2 | IP20 | No |
| VFD1A6MS21AFSAA | 0.2 | IP20 | Yes |
| VFD2A8MS21ANSAA | 0.4 | IP20 | No |
| VFD2A8MS21AFSAA | 0.4 | IP20 | Yes |
| VFD4A8MS21ANSAA | 0.75 | IP20 | No |
| VFD4A8MS21AFSAA | 0.75 | IP20 | Yes |
| VFD7A5MS21ANSAA | 1.5 | IP20 | No |
| VFD7A5MS21AFSAA | 1.5 | IP20 | Yes |
| VFD11AMS21ANSAA | 2.2 | IP20 | No |
| VFD11AMS21AFSAA | 2.2 | IP20 | Yes |
230 V class, three-phase input
IP20 enclosures; no built-in EMC filters in the models listed here.
| Complete model number | Catalogue motor capacity (kW) | Enclosure | Built-in EMC filter |
|---|---|---|---|
| VFD1A6MS23ANSAA | 0.2 | IP20 | No |
| VFD2A8MS23ANSAA | 0.4 | IP20 | No |
| VFD4A8MS23ANSAA | 0.75 | IP20 | No |
| VFD7A5MS23ANSAA | 1.5 | IP20 | No |
| VFD11AMS23ANSAA | 2.2 | IP20 | No |
| VFD17AMS23ANSAA | 3.7 / 4 | IP20 | No |
| VFD25AMS23ANSAA | 5.5 | IP20 | No |
| VFD33AMS23ANSAA | 7.5 | IP20 | No |
| VFD49AMS23ANSAA | 11 | IP20 | No |
| VFD65AMS23ANSAA | 15 | IP20 | No |
460 V class, three-phase input: IP20 models
Models without a built-in EMC filter.
| Complete model number | Catalogue motor capacity (kW) | Enclosure | Built-in EMC filter |
|---|---|---|---|
| VFD1A5MS43ANSAA | 0.4 | IP20 | No |
| VFD2A7MS43ANSAA | 0.75 | IP20 | No |
| VFD4A2MS43ANSAA | 1.5 | IP20 | No |
| VFD5A5MS43ANSAA | 2.2 | IP20 | No |
| VFD9A0MS43ANSAA | 3.7 / 4 | IP20 | No |
| VFD13AMS43ANSAA | 5.5 | IP20 | No |
| VFD17AMS43ANSAA | 7.5 | IP20 | No |
| VFD25AMS43ANSAA | 11 | IP20 | No |
| VFD32AMS43ANSAA | 15 | IP20 | No |
| VFD38AMS43ANSAA | 18.5 | IP20 | No |
| VFD45AMS43ANSAA | 22 | IP20 | No |
460 V class, three-phase input: built-in EMC filter
IP20 models with a built-in EMC filter.
| Complete model number | Catalogue motor capacity (kW) | Enclosure | Built-in EMC filter |
|---|---|---|---|
| VFD2A7MS43AFSAA | 0.75 | IP20 | Yes |
| VFD4A2MS43AFSAA | 1.5 | IP20 | Yes |
| VFD5A5MS43AFSAA | 2.2 | IP20 | Yes |
| VFD9A0MS43AFSAA | 3.7 / 4 | IP20 | Yes |
| VFD13AMS43AFSAA | 5.5 | IP20 | Yes |
| VFD17AMS43AFSAA | 7.5 | IP20 | Yes |
| VFD25AMS43AFSAA | 11 | IP20 | Yes |
| VFD32AMS43AFSAA | 15 | IP20 | Yes |
| VFD38AMS43AFSAA | 18.5 | IP20 | Yes |
460 V class, three-phase input: IP40 model
This IP40 model has no built-in EMC filter.
| Complete model number | Catalogue motor capacity (kW) | Enclosure | Built-in EMC filter |
|---|---|---|---|
| VFD9A0MS43ENSAA | 3.7 / 4 | IP40 | No |
Model identification and configuration reference: Delta MS300 catalogue, ordering tables on printed pages 33–34.
Checks before selecting or replacing a drive
- Electrical supply and motor: Check input voltage, phase count, motor nameplate data and the required drive output current for the duty. Do not select solely by a similar model number.
- Load and operating conditions: Identify the load, operating cycle, acceleration and braking requirements. Confirm any derating conditions in the applicable documentation.
- Installation and configuration: Check enclosure, mounting dimensions, cooling clearance, EMC requirements and any external components required by the installation.
- Controls, communication and safety: Confirm command signals, communication hardware and any required safety function, including its wiring and system-level implementation.
- Replacement work: Record the complete installed model and any connected options. A shared series name does not establish a direct replacement.
MS300 manuals and technical documents
Use the official catalogue for model identification and ordering tables. Consult the applicable user manual for wiring, parameter settings, fault codes and installation limits; the model lists above do not replace those instructions.
- Delta MS300 catalogue: model codes and ordering information
- Delta MS300 manufacturer page and documentation access
Browse other series in our Delta VFD range.
Quotation information
When requesting a quotation, please include the complete model number, quantity and destination. For replacement enquiries, a clear nameplate photograph helps identify the installed version.