mSVS Series
Servo Electronic
Voltage Stabilisers / Regulators
Single Phase
1 to 10 kVA
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mSVS Series - Single-Phase
Servo Electronic AC Voltage Stabilizers -
1 to 10kVA
Our long-standing traditional smaller rated Servo Electronic / Electro-Dynamic range, offering a permissible input voltage window of ±15%, whilst delivering on the output an output voltage accuracy of ±1%.
Suitable for 98% of all applications. Especially popular as a highly endurable regulation solution for more industrial-style applications.
Offered as two ranges, in ratings from 1 to 10 kVA, H Series models support international 220 to 240 Volt mains supplies and L Series models support US-Style utility supplies of 100 to 127 volts.
To learn more about the range of Single-Phase SVS Voltage Stabilisers and Power Conditioners available from Sinalda UK, please check out the following listings, or download the brochure below:

Standard Features include:
![]() | Automatic Step-Less Voltage Stabilisation / Regulation | |
![]() | Cost-Efficient Servo Electronic Design | |
![]() | Precise Output Voltage Accuracy (Adjustable ±1% to ±5%) | |
![]() | Extremely Low Maintenance | |
![]() | TVSS – Transient Voltage Surge & Spike Suppression Protection | |
![]() | Inbuilt High Overload Capability | |
![]() | Over / Low Voltage Indication | |
![]() | Start Up Load Protection | |
![]() | Front Display Panel & Monitoring
| |
![]() | Automatic Restart on Mains Failure | |
![]() | Input Circuit Breaker | |
![]() | Electronic Controls Bypass Switch | |
![]() | Hard Wire Input & Output (with Rear Cable Entry) | |
![]() | Freestanding IP20 Indoor Enclosure | |
![]() | Built to comply with leading International Standards | |
![]() | Supplied with a 3 Year / 36 Months Warranty |
SELECT | Permissible Input Voltage Window Options (–S*):
Swing Options | Nominal Voltage | Max Model Rating | |||
220V | 230V | 240V | |||
S15 | ±15% | 187 to 253V | 196 to 265V | 204 to 276V | 10 kVA |
S20 | ±20% | 176 to 264V | 184 to 276V | 192 to 288V | 5 kVA |
S25 | ±25% | 165 to 275V | 173 to 288V | 180 to 300V | 5 kVA |
SELECT | Required Power Rating:
Power Rating (kVA) | Max Rating (Amps per Phase) | SVS-H-S* Model No (S*=Select Swing Option Required) | ||
220V | 230V | 240V | ||
1 kVA | 4.5A | 4.3A | 4.2A | mSVS-1H-S15~S25 |
2 kVA | 9.1A | 8.7A | 8.3A | mSVS-2H-S15~S25 |
3 kVA | 13.6A | 13.0A | 12.5A | mSVS-3H-S15~S25 |
4 kVA | 18A | 17A | 17A | mSVS-4H-S15~S25 |
5 kVA | 23A | 22A | 21A | mSVS-5H-S15~S25 |
8 kVA | 36A | 35A | 33A | mSVS-8H-S15 |
10 kVA | 46A | 44A | 42A | mSVS-10H-S15 |
Note: All mSVS-Stabilisers are designed to support the full load at minimum input volts and maximum ambient temperature.
SELECT | Permissible Input Voltage Window Options (–S15):
Swing Options | Nominal Voltage | Max Model Rating | |||||
100V | 110V | 115V | 120V | 127V | |||
S15 | ±15% | 85 to 115V | 94 to 127V | 98 to 132V | 102 to 138V | 106 to 146V | 3 kVA |
SELECT | Required Power Rating:
Power Rating (kVA) | Max Rating (Amps per Phase) | SVS-L-S15 Model No | ||||
100V | 110V | 115V | 120V | 127V | ||
1 kVA | 10A | 9A | 8.7A | 8.3A | 7.9A | mSVS-1L-S15 |
2 kVA | 20A | 18A | 17.4A | 16.7A | 15.7A | SVS-2L-S15 |
3 kVA | 30A | 27A | 26A | 25A | 23A | SVS-3L-S15 |
Note:
All mSVS Stabilisers are designed to support the full load at minimum input volts and maximum ambient temperature
General Technical Specification
General: | ||
– Design Topology: | Servo Electronic – Variable Transformer controlled | |
– Phase: | Single Phase, 2 Wire (L+N+GE) | |
– Model Nos: | H Series | SVS-1H-S* to SVS-100H-S* ( 1 to 100 kVA) |
L Series | SVS-1L-S* to SVS-60L-S* (1 to 60 kVA) | |
– Power Ratings: | 17 Model Ratings- 1kVA, 2 kVA, 3kVA, 4kVA, 5 kVA, 8 kVA, 10kVA, 15kVA, 20kVA, 25kVA, 30kVA, 40kVA, 50kVA, 60kVA, 75kVA, 80 kVA & 100kVA | |
– Frequency: | 50 / 60Hz (47 to 63Hz) | |
– Power Factor: | The Power Factor has no effect on performance providing the stabilizer is being used within its rated capacity | |
Input: | ||
– Nominal Voltage: | H Series | 220V – 230V – 240V, Single Phase, 2 Wire (L+N+GE) |
L Series | 110V – 120V – 127V, Single Phase, 2 Wire (L+N+GE) | |
– Input Voltage Window Options (S*): | S15 | Nominal ±15% (All Series) |
S20 | Nominal ±20% (All Series) | |
S25 | Nominal ±25% (All Series) | |
S30 | Nominal ±30% (All Series) | |
S35 | Nominal ±35% (H Series Only) | |
S40 | Nominal ±40% (H Series Only) | |
Output: | ||
– Voltage: | H Series | 220V – 230V – 240V (Customer to Specify), Single Phase, 2 Wire (L+N+GE) |
L Series | 100V – 110V – 120V – 127V (Customer to Specify), Single Phase, 2 Wire (L+N+GE) | |
– Voltage Accuracy: | S15 to S30 Option Models | ±1% (Default) – adjustable ±1% to ±5% |
S35 to S40 Option Models | ±1% (Default) – adjustable ±3% to ±5% | |
– Response Time: | Typically a 10% supply variation will be corrected to within 2.5% in 0.6 seconds | |
– Overload Ratings: | 150% max. current rating for 10 seconds | |
– Efficiency: | ≥98% | |
Metering, Alerts & Communication: | ||
– Front Display Panel: | Digital Metering: | Output Volts, and Load |
Status Indication: | On, Output Over and Under Volts & Output Normal & SPD Fault | |
Protection Features: | ||
– Surge Protection: | TVSS – Protects loads against high-energy Spikes and Transient Voltages | |
– Lightning Surge Protection: | Class II SPD – protection against extremely high voltage surges and transients caused by lightning strikes on the utility mains supply line | |
– Input Breaker: | Standard on all models – delivers over current input protection | |
– Bypass: | Inbuilt Bypass Switch enabling the bypassing of the electronic controls circuitry to provide power direct to the load | |
Environmental: | ||
– Operating Temperature Range: | -15°C to +45°C Derate by 2% for each additional °C up to max 60°C | |
– Maximum Altitude: | 1000 meters (derate by 2.5% per additional 500 meters) | |
– Relative Humidity: | Suitable for indoor tropical use – 0 to 95% (non-condensing) | |
Physical: | ||
– Power Connections: | Hardwire Input & Output (with bottom cable entry) | |
– Construction: | IP20 / NEMA 1 Style – BS EN 60529 | |
– Paint Colour: | RAL 7032 (Pebble Grey – Epoxy Powder Coating) – Other paint colours on specific request | |
– Dimensions & Weights: | Dependent on model rating and configuration Sizes and weights available on individual request | |
Certification & Conformance: | ||
– EMC Conformance: | BS EN 55022 and relevant parts of BS EN 61000 | |
– CE Certification: | CE Marked – 2014/30/EU (The EMC Directive) and 2014/35/EU (The Low Voltage Directive) | |
– Warranty: | 3 Years / 36 Months from date of supply | |
Optional Add-Ons: | ||
– Outdoor IP54 Enclosure (-IP54) | Stabiliser presented in endurable IP54 (BS / EN 60529) / NEMA 3 free-standing steel cubicles suitable for external use, or more challenging internal environments | |
– Input Isolating Transformer (-PC) | Through the integration of a shielded isolation transformer, provides enhanced spike & electrical noise (Common Mode: 120db @ 100khz & Normal Mode Noise: 60db @ 100khz) suppression and neutral ground bonding. Delivers what is commonly referred to as a ‘CLEAN’ supply | |
– Full Manual Maintenance Bypass (-MBS) | An integrated/inbuilt traditional ‘Break Before Make’ bypass facility. Handy when performing remedial works, or deep maintenance on the system. | |
– AquaStop (-AS) | PCB protective coating offering protection against damp and moisture ingress | |
– Digital Metering (-DPM) | Output Digital Power Metering for monitoring V, A, W, VAR, PF, W Hrs & VAR Hrs and offering RS-485 interface and event logging | |
– Output Circuit Breaker (-OCB) | Replacement of the Output Contactor with an Output Circuit Breaker | |
– Alternative Paint Colour (-RAL) | Alternative Paint Colour Finish – customer to specify | |
– UL Recognised Components (-URC) | For applications where UL compliance is required, the Stabilizer / Conditioner can be supplied with UL approved Input Breakers and Output Contactors / Breakers, so that the client can obtain on-site UL approval of the installation |
Note:
All SVR Stabilisers are designed to support the full load at minimum input volts and maximum ambient temperature.
Sales & Support
![]() | Data Sheet – H Series [220V, 230V, or 240V Models] |
![]() | Data Sheet – L Series [100V, 110V, 115V, 120V or 127V Models] |
![]() | Guide Specification |
![]() | Operator / User Manual |
CE Certification
SVS Series Single Phase Servo Electronic AC Voltage Stabilisers / Conditioners comply with the relevant European Union (EU) health, safety and environmental protection directives and regulations and are duly CE marked.
Sinalda Declaration
EMC Directive – 2014/30/EU – in force from April 2016 Low Voltage Directive – 2014/35/EU – in force from April 2016 |
mSVS Series | Image Gallery







If you do not find the Voltage Stabiliser or Power Line Conditioner that meets your application’s exact needs, please contact us with your specific detailed requirements.