Line Interactive UPS

Line interactive UPS with automatic voltage regulation for offices, IT equipment, and small server rooms. Johsun Tec UPS systems are engineered to provide instantaneous backup power and comprehensive protection against outages, surges, sags, and voltage fluctuations.

500VA–3000VA Line Interactive UPS Simulated Sine Wave for PC & Printer 110–240VAC AK Series

AK Series line-interactive UPS (500–3000VA) offers simulated sine wave backup power, surge protection, and voltage

500VA–3000VA Line Interactive UPS Pure Sine Wave Uninterruptible Power Supply AP Series

AP Series line-interactive UPS (500–3000VA) delivers pure sine wave output with AVR, digital display, and

Johsun Tec Line Interactive UPS Manufacturer

Intelligent CPU control with automatic voltage regulation (AVR boost and buck)
Cold start function (start without mains power)
Optional USB or RS-232 communication port with RJ-45 support
Selectable LED/LCD multi-color panels, Digital display for real-time UPS status monitoring
Automatic Voltage Regulation (AVR) for seamless voltage correction
Surge protection against electrical spikes, Overload and short circuit protection

Series	Topology	Capacity Range	Output Waveform	Primary Applications
AK Series	Line Interactive	500VA–3000VA	Simulated Sine Wave	PCs, printers, POS terminals, home appliances
AP Series	Line Interactive	500VA–3000VA	Pure Sine Wave	Sensitive electronics, networking equipment, offices

Professional Manufacturing

Automatic Voltage Converter Factory

With a production history since 2007, our facility in the Xiangyang Industrial Zone integrates advanced R&D with rigorous ISO9001:2008 standards. We ensure a 100% yield through multiple stages of technical debugging, delivering certified power solutions to over 20 countries worldwide.

Voltage Regulators

Engineered with high-sensitivity response technology to ensure a consistent, safe voltage output.

Power Transformers

uilt with premium copper/aluminum materials for superior heat dissipation and low energy loss.

Smart Solar Inverter

High-efficiency power conversion optimized for solar photovoltaic ecosystems.

Best voltage converter company

We supply a wide range of 110V-to-220V and 220V-to-110V converters.

Trust our quality

Certifications & Quality Standards

Combining innovative technology with stringent quality standards to meet global demands.

Download Our Line Interactive UPS Catalog

Access our latest product catalog to explore the full range of voltage stabilizers and power regulation solutions. The catalog includes detailed specifications, model comparisons, technical parameters, capacity selection guidance, and customization options to help you choose the right solution for your market.

Inside the catalog, you will find:

Relay Type, Servo Motor Type & Static Type Models
Input/output voltage configurations
Protection features and application scenarios
OEM / ODM customization information

Source factory

What is a UPS and why do I need one?

A UPS (Uninterruptible Power Supply) provides backup power instantly when mains power fails or becomes abnormal. It protects connected equipment from outages, voltage fluctuations, surges, and other power disturbances. UPS systems are essential for data centers, medical equipment, security systems, and any application where power continuity is critical.

What is the difference between a Line Interactive UPS and an Online UPS?

A Line Interactive UPS powers the load directly from mains under normal conditions, using AVR to regulate voltage fluctuations, and switches to battery when mains fails (transfer time: 4–6ms). An Online UPS continuously powers the load through its inverter with 0ms transfer time, providing the highest level of power protection.

What is the difference between simulated sine wave and pure sine wave?

Pure sine wave output matches the utility grid waveform exactly, making it suitable for all devices, especially sensitive equipment with active PFC power supplies (servers, NAS, medical devices). Simulated sine wave (stepped approximation) provides a cost-effective alternative suitable for general loads like PCs and printers.

Which series should I choose?

For basic home/office equipment with budget priority, choose the AK Series For networking devices, NAS storage, and equipment with active PFC power supplies, choose the AP Series For servers, medical equipment, telecom systems, and any mission-critical applications requiring the highest power quality, choose the AF Series

How do I determine the right UPS capacity?

Calculate the total power consumption (watts) of all devices to be protected. Select a UPS model with at least 1.2–1.5 times the total wattage. For example, if total load is 400W, choose a UPS rated at least 600VA/480W or above.

What voltage standards do Johsun Tec UPS systems support?

All series support both 110/120VAC and 220/230/240VAC input with auto-sensing 50/60Hz frequency, making them compatible with electrical standards worldwide

What certifications do the products carry?

Products are CE certified, with select models carrying RoHS, FCC, and IC certifications.