500VA Wall Mount Automatic Voltage Regulator

The AVS-500P is a wall-mountable AC voltage regulator built around a high-efficiency toroidal transformer and an MCU-based control board. It automatically corrects input voltage fluctuations from 100-270VAC to a stable output of 220/230/240V ±8%. Its zero-cross switching technology ensures fast response without transient spikes.

The unit’s compact dimensions (180×170×100 mm) and lightweight design allow installation in tight spaces – behind a TV, inside a cabinet, or on a wall near workstations. Ideal for environments with unstable grid power, 500VA Wall Mount Automatic Voltage Regulator safeguards valuable electronics from brownouts and surges.

Core Advantages

1. Ultra-Light and Space-Saving

Weighing just 2.4 kg and with a footprint smaller than a sheet of A4 paper, the AVS-500P can be mounted on any wall with two screws. Its slim profile (100mm depth) keeps it out of the way, making it perfect for crowded desks and small apartments.

2. Precision Regulation with 7-Tap Relay

The 7-tap automatic transformer adjusts voltage in small steps, providing ±8% regulation accuracy. This ensures your devices receive clean, stable power even when mains voltage swings wildly – preventing premature ageing of power supplies.

3. Smart Delay Protection

Select-able start-up delay (6 or 180 seconds) protects connected appliances from the instantaneous voltage impact that occurs when mains power is restored after an outage. This feature is especially valuable for compressors in refrigerators and air conditioners.

4. Comprehensive Safety Suite

Built-in protections include overload (120% cut-off), over-temperature (120°C sensor in transformer coil), short-circuit, and over/under-voltage (cut-off at 255V/180V). LED indicators clearly show “OL”, “OH”, “H”, or “L” with audible alarms for fault conditions.

Product Parameter

Key Application Scenarios

1. Home Networking – Protect routers, modems, and Wi-Fi extenders from voltage sags.

2. LED Lighting Systems – Prevent flickering and damage to expensive dimmable LED drivers.

3. Small TVs and Set-top Boxes – Ensure clear picture and sound without power-induced glitches.

4 DIY Electronics Workbenches – Stabilise power for soldering irons, oscilloscopes, and power supplies.

Why Choose the AVS-500P?

The AVS-500P is the lightest and most affordable model in the AVS-P series. 500VA Wall Mount Automatic Voltage Regulator is designed for users who need basic voltage stabilisation for low-power devices and prioritise minimal space occupation and cost. Its delay protection and multiple safety features make it a reliable first line of defence against unstable grid power.

Customization Services

KTAC provides flexible customization options for the AVS-500P to meet your specific application and brand requirements.

Input Voltage Range Configuration

The standard unit supports 100-270VAC or 100-260VAC selectable ranges. We can pre-configure the unit to your specific grid voltage range, ensuring optimal regulation performance for your region without requiring on-site adjustment.

Output Socket Types

Available in multiple socket configurations to match your regional standards (EU, UK, US, AU, South Africa, etc.). We can also supply units with terminal block outputs for permanent wiring installations.

Display and Indicator Options

The dual LED volt meters and fault indicators can be customised for colour, brightness, or simplified indicator sets for specific applications. For OEM projects, we can remove the voltage meters entirely for a cleaner panel design.

Visual Branding

Custom label printing with your brand logo, product name, and specifications. Enclosure colour options are available upon request for volume orders.

Packaging Design

Retail-ready custom boxes with your artwork and branding. Inner packing can be designed to secure the unit for export shipping. Multi-language user manuals available.

Parameter Adjustments

Regulation accuracy (±8% standard), delay settings (6s/180s default), and voltage cut-off thresholds can be adjusted at the factory to match specific equipment protection requirements.

Customization orders require minimum quantities. Typical lead time for customized units is 10-15 days. Please contact our technical team to discuss your specific requirements.

FAQ

1. Can I use the AVS-500P for a refrigerator?

Not recommended. Refrigerators have high startup currents; please choose at least AVS-1500P or higher.

2. How long does it take to respond to voltage changes?

The zero-cross switching technology ensures response within milliseconds, practically instantaneous for most appliances.

3. Does 500VA Wall Mount Automatic Voltage Regulator protect against lightning surges?

It provides basic surge suppression, but for severe lightning, we recommend additional external surge protection.

4. What is the difference between a voltage regulator and a UPS?

A voltage regulator (AVR) stabilises fluctuating input voltage to protect connected equipment from brownouts, overvoltage, and voltage sags. It does not provide battery backup during power outages. A UPS (Uninterruptible Power Supply) includes a battery and inverter to supply power when mains fails, in addition to voltage regulation. For complete protection, we recommend using a UPS for critical loads that cannot tolerate any interruption, and an AVR for equipment that can tolerate brief outages but is sensitive to voltage fluctuations.

5. How do I select the correct delay time (6 seconds vs 180 seconds)?

Use the 6-second delay for most electronic devices such as TVs, routers, and computers. This setting provides fast recovery after brief power interruptions. Use the 180-second delay for equipment with compressors or motors, such as refrigerators, air conditioners, and freezers. This longer delay allows the internal pressure to equalise before restarting, preventing damage to the compressor. The delay setting can be adjusted via a switch on the unit.

6. What does the LED volt meter show?

The AVS-500P features dual LED volt meters: one displays the input voltage from the mains, and the other displays the regulated output voltage delivered to your connected devices. This allows you to visually confirm that the regulator is functioning correctly and to monitor grid conditions in real time. If the input voltage falls outside the regulation range (100-270VAC), the unit will cut off output and display a fault indicator.