Congsin Low-Frequency Solar Inverter with MPPT & UPS — Reliable Power Anywhere
Overview
The Congsin low-frequency solar inverter integrates a powerful power inverter, MPPT solar charge controller and UPS in one compact unit. Designed for off-grid homes, RVs, trucks and portable power stations, it delivers stable pure sine wave output and reliable DC→AC conversion even in harsh conditions. With over 27 years of expertise, Guangzhou Congsin ensures durability and intelligent performance.
Key Advantages
Robust Low Frequency Design
Low frequency topology gives stronger surge capability and better compatibility with inductive loads like pumps and motors. This means safer starts and long-term reliability for demanding applications.
Built-in MPPT for Faster Solar Charging
Integrated MPPT maximizes energy harvest from solar panels, charging batteries faster and improving system efficiency compared to traditional chargers. Ideal when paired with solar panels for off-grid or hybrid systems.
Seamless UPS Function
Automatic, near-instant switch to battery power protects sensitive devices and keeps critical loads running during grid outages. Perfect for home offices, surveillance, medical equipment and telecoms.
Why Choose Congsin
Guangzhou Congsin Electronic Technology Co., Ltd. has 27+ years' focus on power inverter R&D and manufacturing. Our automated production lines and strict testing ensure quality. Products meet ISO9001 and hold global approvals like CE, EMC, LVD, ETL, FCC, RoHS and E-MARK. We offer OEM/ODM, private labeling and customization to match your project needs.
Typical Applications
Use this unit as a solar inverter for homes, a power inverter for vehicles and RVs, a portable power station backbone, or as a reliable low frequency UPS for field operations and construction sites.
Buy with Confidence
Choose Congsin for a balanced mix of efficiency, endurance and smart features. Contact us to discuss model options, OEM requirements or bulk orders. Experience dependable power solutions that keep you running—anywhere, anytime.
Product Images
Certificate display
ROSH -Certificate Number - TST20220503108-3RC
SGS Certificate
CE Certifcate Nomber - TS120220503108.2FC
Question you may concern
How long does it take to become an authorized distributor?
The process typically takes 2-4 weeks, depending on the discussion and agreement finalization.
Can I order samples before production?
Yes, we offer sample evaluation and prototype testing.
What capacity battery can be used with it?
It is recommended to use a 12V 100Ah-200Ah lead-acid battery or lithium battery; the larger the battery capacity, the longer the UPS power supply time (e.g., a 100Ah battery can support a 100W device to work continuously for about 10 hours).
Does it have protection features?
Yes, it includes overload, overheat, and short-circuit protection.
low frequency solar inverter 12v/24v/48v pure sine wave power inverter2000w 3000w 4000w 5000w 6000w 8000w 10000w 12000w
Pure sine waveform output with built-in transformer and AvR stabilizer(Specially designed to startup inductive
loads such as air conditioner,refrigerators, motors, water pumps, compressorsand laser printers)
Solar hybridinverter built-in 8oA MppT solar controller and ACcharger.
Output voltage(200V/210V/220V/230V/240V)&Output frequency(50Hz/60Hz) can be manuallyregulated at site.
Support Lead acid battery/Gel battery/lithium iron phosphate battery/ternary lithium battery/customized battery.
RS232/RS485 Communicationsportis available.
3 times start-up peak power ofresistingvoltaicimpingement, excellent loading capability.
High conversion efficiency is up to 90%.
Built-in Lithium battery activation function
PVarray Open circuit voltage 230v DC
Support 3 working modes:Mains priority,Battery priority,Pv priority
low frequency solar inverter 12v/24v/48v pure sine wave power inverter2000w 3000w 4000w 5000w 6000w 8000w 10000w 12000w
Pure sine waveform output with built-in transformer and AvR stabilizer(Specially designed to startup inductive
loads such as air conditioner,refrigerators, motors, water pumps, compressorsand laser printers)
Solar hybridinverter built-in 8oA MppT solar controller and ACcharger.
Output voltage(200V/210V/220V/230V/240V)&Output frequency(50Hz/60Hz) can be manuallyregulated at site.
Support Lead acid battery/Gel battery/lithium iron phosphate battery/ternary lithium battery/customized battery.
RS232/RS485 Communicationsportis available.
3 times start-up peak power ofresistingvoltaicimpingement, excellent loading capability.
High conversion efficiency is up to 90%.
Built-in Lithium battery activation function
PVarray Open circuit voltage 230v DC
Support 3 working modes:Mains priority,Battery priority,Pv priority
3000W Full-Power Pure Sine Wave Inverter (Labeled 6000W), DC 12V to AC 220V Power Converter, Suitable for High-Power Devices
This pure sine wave inverter (Model: CS3000PSW-L6000) features "3000W full continuous power output + labeled 6000W peak power." Adopting pure sine wave output technology (waveform distortion rate <2%), its power quality is close to mains power, which can safely drive high-power precision devices such as air conditioners, refrigerators, electric tools, and medical instruments, avoiding equipment malfunctions caused by unstable waveforms. The device supports DC 12V input (compatible with 10.5V-14.8V wide voltage): 3000W continuous power meets long-term stable power supply, and 6000W peak power easily copes with the instantaneous startup impact of devices. Equipped with 4 AC universal sockets (16A) and 2 USB 3.0 fast-charging ports (22.5W/port), it can supply power to 6 devices simultaneously. Built-in six-fold protection (overload, overvoltage, undervoltage, short circuit, overtemperature, and reverse connection), combined with dual intelligent silent cooling fans (noise ≤45dB), balances high-power performance and safety, making it suitable for home emergencies, outdoor engineering, vehicle-mounted power supplies, small commercial and other scenarios.
500W Modified Sine Wave Inverter (Rated 360W Peak 720W) DC12V to AC220V Inverter with LED Display Universal Socket
This 500W modified sine wave inverter has a rated power of 360W and a peak power of 720W, with DC12V input and AC220V output. Equipped with 1 USB port, universal socket, LED display, external fuse design, and battery clip, it has an exquisite appearance and stable performance. It can provide reliable AC power conversion for mobile phones, small home appliances, electronic devices, etc. in scenarios such as vehicle, outdoor, and home emergency, meeting the power needs of various devices.
CONGSIN is a trusted OEM factory for power inverters, solar charge controllers, and DC converters. Reliable solutions for global B2B buyers.
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