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PRAG 20KVA 45-280V Relay Voltage Stabilizer

605,000.00
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Estimated Delivery:
07 - 14 Dec, 2025
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The 20KVA Relay 45-280V Wall Voltage Stabilizer in light grey is the perfect solution for safeguarding your electrical appliances from unstable power fluctuations. Designed for high-capacity performance, this voltage stabilizer ensures a steady AC 220V output with a precise ±10% variance, making it ideal for areas with extreme voltage variations ranging from AC 45-280V. Its powerful 20000VA capacity is suitable for residential or commercial use, offering reliable protection for sensitive equipment.

Equipped with advanced over-voltage protection (246V±4V), overload protection, and high-temperature safety, this stabilizer guarantees the longevity of your devices by shielding them against unexpected surges or spikes. The stabilizer also includes a short delay of 3-5 seconds and a long delay of 3-7 minutes to further protect appliances during power restoration.

This compact yet sturdy device has a sleek, space-saving design, with a product size of 39 x 35 x 35 cm and a total weight of 29.9 kg (net). The stabilizer is packed with added durability in mind, ensuring it withstands everyday wear and tear. With short circuit protection and a robust build, the 20KVA Relay Stabilizer is engineered to deliver consistent performance for years. Choose this light grey stabilizer to experience unmatched power stability and peace of mind for all your electrical needs.

Quick Comparison

Vertiv Liebert itON 400VA removeVertiv Liebert itON 1500VA E 230V IEC-IEC UPS removeMercury Maverick 1550va UPS removePrag 20kva 45-280v Relay Voltage Stabilizer removeMercury Maverick 650VA UPS remove
NameVertiv Liebert itON 400VA removeVertiv Liebert itON 1500VA E 230V IEC-IEC UPS removeMercury Maverick 1550va UPS removePrag 20kva 45-280v Relay Voltage Stabilizer removeMercury Maverick 650VA UPS remove
ImageVertiv Liebert itON 400VAVertiv Liebert itON 1500VA E 230V IEC-IEC UPSMercury Maverick 1550va UPSPrag 20kva 45-280v Relay Voltage StabilizerMercury Maverick 650VA UPS
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Description
  • Apparent power: 400 VA
  • UPS architecture: line-interactive
  • Number of phases at the input: 1 (230V)
  • Number of batteries: 1
  • Voltage: 12 V
  • Battery capacity: 4.5 Ah
  • Charging time: 4 hours
  • Automatic voltage regulator (AVR with boost and trim)
  • Compact size
  • Light weight
  • Easy operation
  • Overload protection and alarm
  • Auto re-start with AC recovery
  • Fast charging
  • Cold start function
Frequent power interruptions can lead to stress and delays in meeting project deadlines while working on your computer. The Mercury Maverick 1550VA line interactive UPS provides a reliable power back up that enables you save your work the moment there is power interruption or public power outage. It has a wide voltage input range of 140~300VAC with a transfer time of 2 – 6ms and is compatible with generators and the erratic public power supply. Features • Built in AVR with wide input range of 140~300VAC • Auto restart • Output short circuit protection • Overload protection • Overcharge protection • Sleek and compact design with cpu control • Green function ( No load cut off ) Country wide maintenance and service centres available   Input Voltage                                                  220VAC Input Frequency                                              50Hz or 60Hz Input Phase                                                      Single Input Socket                                                    With Fuse Input Range (220v)                                         140V – 300VAC Rating Output                                                   1550VA/930V Output Waveform                                   Simulated Sine wave Battery Type                                                    12V/8.2AH x2 Dimension(mm)                                               313 x 129 x 175 Weight (Kg)                                                     4.4
  • Input Voltage Range (45V-280V)
  • Steady output voltage
  • Digital Control
  • Relay Control + Toroidal Transformer Technology
  • LED display
  • Low and Over voltage protection
  • Single Phase
  • 650va UPS
  • overlaod protection
Content
Liebert itON 400VA is a reliable line-interactive UPS designed for the protection of desktop computers and standalone IT equipment. Liebert itON comes complete with an automatic voltage regulator (AVR) allowing flexibility and reliability for PCs and other sensitive electronic equipment. With its compact design and easy to use controls, Liebert itON also provides sufficient back up time, allowing work in progress to be saved safely before proceeding with the system shutdown. Liebert itON also comes complete with automatic restart and cold start functions for increased continuity and availability.
  • Apparent power: 400 VA
  • UPS architecture: line-interactive
  • Number of phases at the input: 1 (230V)
  • Number of batteries: 1
  • Voltage: 12 V
  • Battery capacity: 4.5 Ah
  • Hold time (100% load): 4 min
  • Charging time: 4 hours
  • Enclosure type: Tower
  • Security / filters: Excessive discharge, Overload
  • Special functions: - Cold start - Automatic voltage regulation system (AVR) - Sine when working on the battery LEDs indicating: - Charging the battery - Overloading the UPS - Low battery - Overload - Necessary battery replacement - Battery failure
  • Power supply ports: Type F Schuko
  • Power ports: 2 x type C / F (Schuko)
  • Connectors: None
  • Environmental requirements: - Operating temperature: from 0 to 40 degrees C- Storage temperature: from -20 to 50 degrees C- Operating humidity / storage: 0 - 90% (non-condensing)
  • Accessories in the set: Operating instructions
  • Color: Black, Gray
  • Dimensions: - Width: 100 mm - Height: 142 mm - Depth: 287 mm
  • Weight: 3.55 kg
  • Other parameters: - Real power: 240W- Input connector: cable with Schuko plug (10A) - Hold time at 50% load: 8 minutes - Input voltage range in basic mode: 162-290V- Variable input voltage range: 220-240V
The Liebert itON 1500 VA is a reliable line interactive ups designed to protect desktops and standalone computing equipment. The Liebert itON comes with an automatic voltage regulator (AVR) to provide flexibility and reliability to computers and other sensitive electronic equipment. With its compact design and easy –to use controls, the Liebert itON offer sufficient autonomy to safely back up current tasks before shutting down the system.   LI32141CT21 is ideally suited for the following equipment:
  • Desktop PCs
  • Professional workstations
  • Small routers, bridges, and hubs
  • Point-of-sale terminals
  • Other sensitive electronics
Features
  • Equipment with boost and buck AVR to stabilize the input voltage
  • Microprocessor control guarantees high reliability
  • Provides AC overload protection
  • Auto-restart with AC recover
  • Compact size, lightweight
  • Fast charging
  • Off mode charging
  • Cold start function
  • Overload protection and alarm
  • USB communication port for monitoring and shutdown software (UX models only)
Top Benefits
  • Smart RS232/USB interface for power management
  • Excellent microprocessor control guarantees high reliability
  • AVR Boost and buck for voltage stabilization
  • Auto restart while AC is recovering
  • Simulated sine wave
  • Auto charging at Off-mode
  • Cold start function
  • Generator compatible
Key Specifications CAPACITY 1500 VA/900 Watt. INPUT
  • Voltage 220/230 VAC
  • INPUT Voltage Range 140-300 VAC
  • Frequency Range 50 Hz
OUTPUT
  • AC Voltage Regulation (Batt. Mode) ±10%
  • Frequency Range (Batt. Mode) 50 Hz ±1 Hz
  • Transfer Time Typical 2-6 ms
  • Waveform (Batt. Mode) Simulated Sine Wave
  • Overload 110% +/-10% Shutdown after 5 mins
BATTERY
  • Battery Type & Number 12 V/7 Ah x 2
  • Typical Recharge Time 6-8 hours up to 90% capacity
TRANSFER TIME Minimum line break for Typical 4-8 msec transfer to battery
Frequent power interruptions can lead to stress and delays in meeting project deadlines while working on your computer. The Mercury Maverick 1550VA line interactive UPS provides a reliable power back up that enables you save your work the moment there is power interruption or public power outage. It has a wide voltage input range of 140~300VAC with a transfer time of 2 – 6ms and is compatible with generators and the erratic public power supply. Features • Built in AVR with wide input range of 140~300VAC • Auto restart • Output short circuit protection • Overload protection • Overcharge protection • Sleek and compact design with cpu control • Green function ( No load cut off ) Country wide maintenance and service centres available   Input Voltage                                                  220VAC Input Frequency                                              50Hz or 60Hz Input Phase                                                      Single Input Socket                                                    With Fuse Input Range (220v)                                         140V – 300VAC Rating Output                                                   1550VA/930V Output Waveform                                   Simulated Sine wave Battery Type                                                    12V/8.2AH x2 Dimension(mm)                                               313 x 129 x 175 Weight (Kg)                                                     4.4Low, High, Fluctuating NEPA Voltage? One Central Stabilizer for your entire Flat, Home, Office, etc. Extreme Wide Input Voltage (45-280V) Stabilizer and Protect all electrical appliances in your premises: Air Conditioners, Fridges, Freezers, TV, Home Theatre, DVD, Satellite Decoder, Electronics, Lights, Fans, Washing Machine, Microwave, Pumping Machine, Photocopier, Printer, Desktops, Notebooks, etc. TMH45-20K Relay Automatic Voltage Stabilizer Series is based on digital technology; provides voltage stabilization and protection to appliances and equipment; designed as a central stabilizer to handle all house loads. Features
  • Input Voltage Range (45V-280V)
  • Steady output voltage
  • Digital Control
  • Relay Control + Toroidal Transformer Technology
  • LED display
  • Low and Over voltage protection
  • Single Phase
Ensure you charge this UPS for Minimum of 6 hrs before using it. Always on point with Mercury line of products. It has stood the test of times to be one of the leading makers of Line interactive backup ups for all applications. It has no dulling effect whatsoever. No need to get your desktop computer hard drive crashing or loosing your work when on the PC. No need having to loose your favorite TV program due to power failure and having to wait for minutes getting it back up again. This unit will sustain power until you put on your generator for continuity of use again. Mercury Maverick 650VA UPS features a Boost and buck AVR, three LED indicators for easy understanding and is fully digitized microprocessor controlled. Efficient and durable, Ideal for PC, TV, Sound system etc Backup now to protect your valuables from surge, brown outs and over voltages that might arise from your generator or public utility power. It is guaranteed that with the use of UPS for your gadgets, you have over a lifetime of us of your power devices. No more frequent purchases of that your laptop power adapter or Phone chargers. This UPS can be sure to protect your system from damage, especially an unpleasant crash when the power supply suddenly fails. Being able to achieve this protection with a relatively inexpensive uninterruptible power supply unit is certainly a benefit you should take advantage of. What's more, you prevent loss of vital data and other digital resources that can result from sudden power outage, when there is no UPS backup.Technical Specifications:   Input voltage 220VAC Input frequency 50Hz Input phase Single phase Input socket With Fuse Cold Start (0 to 100% load) Press the ON/OFF switch Input range (220V) 140V-300V Rating output (VA). 650VA Rating output (W). 390W Rating output (W). Battery mode(simulated sine wave), AC mode (sine wave) Power factor 0.6 Rating voltage 220V Output range 220Vac-7%+15% ( in battary mode ) Rear Output Socket 2xUniversal - Battery backup Transfer time TYPICAL 4-8 ms Communication Interface NIL Rating frequency 50Hz Output Frequency Line-mode Synchronize with the Utility Battery mode 50 Hz±1Hz Output Frequency Line Mode Synchronize with the utility Short Circuit Protection Line Mode FUSE & firmware protection Battery Mode Software protection controlled by firmware Overload Protection Line Mode 110%+-5% (Go to fault mode after 5 minutes), 120%+-5% (Go to fault mode immediately) Battery Mode 110%+-5% (Shutdown after 5 minutes) 120%+-5% (Shut down immediately) Rating frequency 12V/4.5AH x 1 Backup Tim - Typical 10mins to 18mins (depending on load) Charge Current About 1A at normal mode Over Charge Protection >14.5V +/- 0.2V stop charging Weight 5.6kg +/- 0.3Kg Dimension 390x 145 x 220 (mm)
Weight3.55 kg5 kg4.4 kg40 kg5.6 kg
Dimensions287 × 100 × 142 cmN/A313 × 129 × 175 cmN/A390 × 145 × 220 cm
Additional information
Weight 3.55 kg
Dimensions 287 × 100 × 142 cm
Weight 5 kg
Weight 4.4 kg
Dimensions 313 × 129 × 175 cm
Weight 40 kg
Weight 5.6 kg
Dimensions 390 × 145 × 220 cm
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