Setavolt mSA / mSA-3 — motorised variable autotransformers 3–200 A
Country: United Kingdom · Model: Setavolt mSA / mSA-3
The Setavolt mSA (single-phase, 3–100 A) and mSA-3 (three-phase, 10–200 A) motorised autotransformers change voltage smoothly from zero to 117 % of the input. The electric drive makes regulation remote, so the series is taken for building into OEM equipment and for laboratory benches.
- Current
- mSA (1 phase) 3–100 A, mSA-3 (3 phases) 10–200 A
- Output voltage
- 0–117 % of the input
- mSA-3 grid
- 400 V (HB), 208 V (LB), 480 V (HB-480)
- mSA-3 version
- IP20 on wheels, digital voltmeter and ammeter, input circuit breaker
Technical specifications
| Current | mSA (1 phase) 3–100 A, mSA-3 (3 phases) 10–200 A |
|---|---|
| Output voltage | 0–117 % of the input |
| mSA-3 grid | 400 V (HB), 208 V (LB), 480 V (HB-480) |
| mSA-3 version | IP20 on wheels, digital voltmeter and ammeter, input circuit breaker |
| mSA version | open assembly for OEM |
Replacement for
LATR-1M, LATR-2M, RNO-250-2, RNO-250-5, RNO-250-10, RNT (voltage regulators)
selected by purpose and main parameters, please confirm with the manager
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
An electric motor turns the regulating assembly, so voltage is set from a console or a control system and not by hand at the unit. The single-phase mSA is supplied as an open assembly without a cover and is mounted inside the cabinet or machine of the equipment manufacturer. The three-phase mSA-3 is made as a separate mobile unit in an IP20 enclosure on wheels. A digital voltmeter and ammeter are on the front panel and a circuit breaker is installed at the input, so a separate protective panel is not needed for it. For the mSA-3 there are three grid options: HB for the European three-phase grid, LB for 208 V and HB-480 for 480 V.
How to choose
First determine the number of phases and the load current. The mSA for 3–100 A suits building into a machine, and the mSA-3 for 10–200 A with its own instruments is more convenient for a laboratory or workshop. When more than 200 A is needed, move to the induction Setavolt iSA for 150–800 A, and without an electric drive the manual SA series for 3–100 A will do.
Request a price and lead time
Setavolt mSA / mSA-3 — motorised variable autotransformers 3–200 A. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
Up to what voltage does the mSA autotransformer regulate?
The output changes from 0 to 117 % of the input voltage, so the unit can raise the voltage slightly above the mains.
What is the difference between mSA and mSA-3?
The mSA is single-phase, 3–100 A, in an open version for OEM. The mSA-3 is three-phase, 10–200 A, in an IP20 enclosure on wheels with a voltmeter, ammeter and input circuit breaker.
What grid is the three-phase mSA-3 designed for?
There is an HB version for the European three-phase grid, LB for 208 V and HB-480 for 480 V, and the letter is chosen by the supply voltage.
Can the mSA be built into your own equipment?
Yes, the single-phase mSA is supplied as an open assembly precisely for building into OEM equipment, and the electric drive is connected to the machine's control system.
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.







