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Voltsafe PLUS - Single Phase Air Cooled
Voltsafe PLUS Single Phase Air Cooled is a 1–20 kVA servo stabilizer engineered with advanced MCU and in-built SMPS technology to ensure a stable, constant output voltage of 230 VAC across a wide input range. Designed for single-phase applications, it delivers precise automatic voltage correction at 27 V/sec with true RMS sensing, and achieves greater than 97% AC-AC efficiency. It provides robust protection against neutral failure, frequency cut-off, surges, overload and short circuits, and is ideal for medical equipment, home appliances, fitness equipment, IT peripherals, critical desktop publishing equipment and lighting loads. It is IS 9815 compliant and generator compatible.
- 1–20 kVA single-phase servo stabilizer – air cooled
- Advanced MCU-based technology with in-built SMPS
- Correction speed: 27 V/sec (Ph-N) for fast response
- Normal range: 170–270 V; Wide range: 140–280 V
- AC-AC efficiency > 97% – lower cost of ownership
- Seven segment LED display with true RMS measurement
- Generator compatible; IS 9815 compliant
Best Suited For
Advanced MCU-based technology with in-built SMPS
Microprocessor-based control with integrated SMPS ensures precise voltage regulation, high reliability and uninterrupted operational performance even under varying load conditions.
Fast correction speed (27 V/sec)
A correction speed of 27 V/sec (Ph-N) responds rapidly to voltage fluctuations, minimising the impact of sags and surges on sensitive connected equipment.
Wide input voltage range (140–280 V)
Operates across a broad input range – Normal 170–270 V and Wide 140–280 V – maintaining a stable 230 VAC output without switching to bypass under most grid conditions.
AC-AC efficiency > 97%
High efficiency reduces energy losses and operating costs, making the stabilizer economical for continuous 24x7 operation.
Comprehensive protection suite
Protects connected equipment against neutral failure, frequency cut-off, surge, input/output over- and under-voltage, overload (electronic trip) and short circuit (MCB/MCCB), including carbon brush failure detection.
Seven segment LED display with true RMS measurement
Displays input voltage, output voltage, output frequency and load current using true RMS measurement for accurate monitoring in non-sinusoidal waveform environments.
Frequently Asked Questions
It is designed for medical equipment, home appliances, fitness equipment, IT peripherals, critical desktop publishing equipment and lighting loads within the 1–20 kVA range.
It supports a Normal range of 170–270 V and a Wide range of 140–280 V, maintaining a stable 230 VAC ± 2% output.
The correction speed is 27 V/sec (Ph-N), ensuring rapid response to fluctuations.
Yes. It is designed to work downstream of a generator for uninterrupted operation.


