Central Surplus Bearing Finder
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1 HP / 0.75 kW AC microdrive that takes 115 V single-phase in and delivers 230 V three-phase out at 4.3 A. V/Hz PWM control, IP20 open panel, built for replacing a fixed-speed motor starter. Drive unit only, no keypad or resistor.
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Single-Phase DIN-Rail Energy Meter, 230 V L-N, 5(100) A Direct, M-Bus, Bidirectional MID Class B$76.46| MFR / Brand | Baldor |
|---|---|
| MPN | VS1ST11-0 |
| GTIN | 781568454404 |
| Model | VS1ST 11-0 |
| Base Number | VS1ST11 |
|---|---|
| Industry Terms | VFD, microdrive, AC drive, inverter, variable frequency drive, single phase to three phase drive, motor speed control |
| Application Types | small machine tools, pumps, fans, conveyors, shops without three-phase service |
| Output Amperage | 4.3 A rated (output); 16 A input current |
| Output Voltage | 230 V AC class, three phase |
| Mpn Variants | VS1ST11-0; VS1ST110; VS1ST11 0; VS1ST-11-0; VS1ST |
| Manufacturer Status | Discontinued; Baldor drives supported under ABB |
| Compatible With Replaces | Three-phase 230 V induction motors to 1 HP; replaces fixed-speed motor starters on single-phase 115 V supplies |
| Additional Attributes | Output: 230 V class three-phase; Control method V/Hz PWM open loop (not vector); Enclosure IP20; Option codes: none; Braking resistor external and not included; Manual reference MN767 |
| Nominal Rated Input Voltage | 115 V AC single phase, 50/60 Hz |
| Part Number | VS1ST11-0 |
| Mounting Type | Panel mount, IP20 open |
| Cross Reference 1 | VS1ST110 |
|---|---|
| Cross Reference 2 | ABB / Baldor VS1ST11-0 |
A Baldor VS1ST11-0 — a 1 HP / 0.75 kW AC microdrive from the VS1 Microdrive range, sold by Baldor as a “starter replacer”: a compact adjustable-frequency drive intended to go in where a fixed-speed contactor starter was, and run out of the box with minimal setup. It is a V/Hz (volts-per-hertz) PWM inverter for standard three-phase induction motors.
VS1 — Baldor VS1 general-purpose inverter family.
ST — Starter Replacer microdrive variant.
1 (first digit) — input voltage code: 115 V AC single phase.
1 (second digit) — horsepower: 1 HP.
-0 — option code: none fitted (a T suffix on other models denotes fitted keypad or other options).
Type: AC variable frequency microdrive, PWM.
Motor rating: 1 HP / 0.75 kW.
Input: 115 V AC, single phase, 50/60 Hz.
Output: 230 V AC class, three phase, 4.3 A rated.
Control method: V/Hz (volts per hertz) open loop.
Enclosure: IP20, open panel-mount.
Option codes fitted: none.
UPC: 781568454404.
Origin: United Kingdom (nameplate).
The single-phase 115 V input is the reason to buy this drive: it lets a three-phase 230 V motor run from an ordinary single-phase supply, which is why these turn up on small machine tools, pumps and conveyors in shops with no three-phase service. The trade-off is control performance. V/Hz gives smooth speed adjustment but not the low-speed torque or speed holding of a vector drive, so it is not the right choice for a hoist, a winder or a spindle needing constant torque near zero speed.
Braking: what you still need:
Any braking resistor is external and is not supplied. For an overhauling or high-inertia load, a resistor must be sized and fitted per the VS1ST manual (MN767).
Drive unit only. No braking resistor, no input or output reactor, no EMC/RFI filter, no remote keypad or operator panel, no communication option module, no potentiometer or speed pot kit, no enclosure, no motor cable, no terminal or connector kits and no printed manual.
Sold as one drive unit.
VS1ST11-0, VS1ST110 and VS1ST11 0 are the same drive. Within the range the voltage digit is decisive: VS1ST21-0 and VS1ST81-0 are 230 V input models and are not substitutes for a 115 V feed, while VS1ST11P5-0T is 1.5 HP with options fitted. VS1STS is the extreme-duty variant (manual MN767S) with a different enclosure. Baldor drives of this era are now supported under ABB; the VS1 range is discontinued.
Rockwell’s own product page for the Kinetix 6000 is down
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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