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R438 AVR - Automatic Voltage Regulator - Exact Generic Replacement | Voltage 95-480V AC |
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R438 AVR - Automatic Voltage Regulator - Exact Generic Replacement | Voltage 95-480V AC |
Voltage regulation of ±0.5%
R438 AVR - Automatic Voltage Regulator - Exact Generic Replacement | Voltage 95-480V AC |
Item #: 18785307

R438 AVR - Automatic Voltage Regulator - Exact Generic Replacement | Voltage 95-480V AC |

Item #: 18785307

MWK 210717

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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Order now and get it around Thursday, September 10
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Voltage regulation of ±0.5%
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

Wide Voltage Range
Supports a broad voltage input of 95-480V AC, ensuring compatibility with various electrical systems and stabilizing performance under diverse conditions.
Exact Replacement
Engineered as a direct replacement, simplifying installation and minimizing downtime for users needing a quick and reliable voltage regulation solution.
Enhanced Reliability
Designed to ensure consistent voltage output, reducing the risk of equipment damage and providing peace of mind for homeowners and businesses alike.

Product Details

Shop R438 AVR - Automatic Voltage Regulator - Exact Generic Replacement | Voltage 95-480V AC | online at a best price in Malawi. B07H6W76MZ
  • Voltage regulation ±0.5%
  • Short circuit capability: 3 x Irated for 10 seconds (AREP or PMG excitation)
  • Voltage sensing: 95 to 140 volts (50/60 Hz) or 170 to 260 volts (50/60 Hz) or 340 to 520 volts (50/60 Hz)
  • Response time: Normal (1sec) for ±20% voltage variation or rapid (0.3 sec) for ∼±20% voltage variation
  • Remote voltage adjustment range of: ±5%
  • 1000 Series alternators do not have PMG option

Who Should Buy?

Suitable For
  • Homeowners

    Ideal for homeowners looking to stabilize voltage fluctuations in their appliances and electrical systems.

  • DIY Enthusiasts

    Great for DIY enthusiasts needing reliable voltage regulation for various electronic projects and installations.

  • Small Business Owners

    Beneficial for small businesses that require consistent power supply for sensitive machinery and equipment.

Not Suitable For
  • Large Industries

    Not suitable for large industrial applications where higher voltage stabilization and larger capacity are necessary.

Product Description

R438 AVR - Automatic Voltage Regulator - Exact Generic Replacement | Voltage 95-480V AC |

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the purpose of the R438 AVR - Automatic Voltage Regulator?

    Answer: The R438 AVR is designed to stabilize voltage output for electrical devices, ensuring they receive a consistent power supply. By regulating voltage levels between 95-480V AC, it mitigates fluctuations that could harm sensitive equipment. This automatic regulation is crucial in protecting generators or industrial machinery from voltage spikes or drops, enhancing their lifespan and operational efficiency.
  • Question: How does the R438 AVR work?

    Answer: The R438 AVR works by continuously monitoring the output voltage and making real-time adjustments to maintain the desired level. When it detects a deviation from the set voltage, it activates internal mechanisms to either boost or reduce the voltage as necessary. This functionality is especially beneficial for applications such as powering industrial equipment or backup generators, where voltage stability is critical for performance.
  • Question: What types of devices can use the R438 AVR?

    Answer: The R438 AVR is suitable for a wide range of applications, especially those involving generators, motors, and other power-dependent machinery. It is particularly valuable in settings like construction sites, factories, or residential backup systems, where reliable voltage regulation is essential to prevent equipment damage and ensure operational efficiency.
  • Question: Is the R438 AVR compatible with all generators?

    Answer: While the R438 AVR is designed as a generic replacement for many models, compatibility depends on the specific generator's design and voltage requirements. To ensure proper integration, users should verify that their generator's specifications align with the AVR's voltage range of 95-480V AC, thus guaranteeing optimal performance and safety.
  • Question: What are the installation requirements for the R438 AVR?

    Answer: Installation of the R438 AVR requires a basic understanding of electrical systems. It typically involves connecting the AVR to the generator's output and input terminals, following proper wiring protocols for safety. Depending on the complexity of the system, users may benefit from professional assistance to ensure accurate setup and functionality.
  • Question: Can the R438 AVR be used in residential applications?

    Answer: Yes, the R438 AVR is suitable for residential applications, particularly in homes that utilize generators as backup power during outages. By regulating voltage, the AVR protects household appliances from potential damage caused by inconsistent power supply, ensuring a safer and more reliable energy source for everyday use.
  • Question: What features should I look for in an Automatic Voltage Regulator?

    Answer: When choosing an Automatic Voltage Regulator like the R438 AVR, look for features such as voltage range compatibility, response time, and fail-safe mechanisms. Additional features to consider are overload protection, ease of installation, and durability under various environmental conditions. These factors play a crucial role in the AVR's performance and longevity.
  • Question: What benefits does the R438 AVR provide for industrial settings?

    Answer: In industrial settings, the R438 AVR offers significant benefits by ensuring consistent voltage supply to machinery and equipment, thus optimizing productivity and reducing downtime. Its ability to handle voltage variations helps protect critical systems from damage, ensuring that operations can run smoothly without electrical disruptions.
  • Question: What are the signs of a failing voltage regulator?

    Answer: Signs of a failing voltage regulator include persistent power fluctuations, equipment performance issues, or unusual noises from connected devices. Users may also notice that appliances are not operating at their expected efficiency. If these symptoms arise, checking the R438 AVR for proper functionality can help avoid further complications or equipment damage.
  • Question: Where can I buy the R438 AVR - Automatic Voltage Regulator in Malawi?

    Answer: You can purchase the R438 AVR - Automatic Voltage Regulator at Ubuy, which offers a range of electronic components including this AVR for your Voltage stabilization needs. Ubuy is known for its user-friendly interface and extensive selection, making it a convenient choice for finding quality replacement parts like the R438 AVR.

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Pros

  • High voltage adjustment range
  • Reliable voltage regulation
  • Durable construction
  • Compact and lightweight design
  • Easy installation

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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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MWK 210717

Order now and get it around Thursday, September 10

QTY:

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Fastest cross-border delivery

Features & Benefits

  • Voltage regulation of ±0.5%
  • Short circuit capability up to 3 x Irated for 10 seconds
  • Response time of 1sec for _+20% voltage variation or 0.3 sec for ∼+20% voltage variation
  • Remote voltage adjustment range of _+5%
  • Options for 95 to 140 volts, 170 to 260 volts, or 340 to 520 volts voltage sensing

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