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OTC Insulation Multimeter,1000 AC Volts 3990, Black
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OTC Insulation Multimeter,1000 AC Volts 3990, Black
The Insulation Multimeter is a versatile and powerful tool with a wide range of features to make your job easier and more efficient.
OTC Insulation Multimeter,1000 AC Volts 3990, Black
OTC

Item #: 10845167

OTC Insulation Multimeter,1000 AC Volts 3990, Black

Item #: 10845167

BHD 361

Price Details

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*All items will import from US

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Order now and get it around Sunday, September 06
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The Insulation Multimeter is a versatile and powerful tool with a wide range of features to make your job easier and more efficient.
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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

High Voltage Rating
Rated for 1000 AC volts, this multimeter is ideal for safely measuring high voltage applications, making it a reliable tool for electricians and technicians in diverse environments.
Durable Design
The rugged construction ensures long-term durability and reliability, designed to withstand harsh working conditions while providing accurate insulation resistance measurements.
User-Friendly Interface
Featuring an intuitive display and easy-to-navigate controls, this multimeter simplifies operation, enabling users to quickly perform tests without extensive training or experience.

Product Details

Shop the OTC Insulation Multimeter with a wide range of features including hybrid insulation resistance test, true RMS, and diode test. Available at Ubuy Bahrain.
BrandOTC
Power SourceBattery Powered
ColorBlack
Item Weight16 ounces (453.6 grams)
Item dimensions L x W x H9 x 6.8 x 2.75 inches (22.9 x 17.3 x 7 cm)

Who Should Buy?

Suitable For
  • Electrical Technicians

    Ideal for technicians performing insulation resistance tests in various electrical applications, ensuring safety and reliability.

  • HVAC Professionals

    Useful for HVAC professionals to check insulation resistance in motors and compressors, preventing equipment failures.

  • Field Service Engineers

    Perfect for field service engineers needing portable tools to diagnose issues quickly on-site during service calls.

Not Suitable For
  • Casual Users

    Not suitable for casual users or homeowners who may lack the expertise to properly use a multimeter.

Product Description

OTC Insulation Multimeter,1000 AC Volts 3990, Black

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is an OTC Insulation Multimeter and how is it used?

    Answer: The OTC Insulation Multimeter, model 3990, is a versatile tool designed to measure insulation resistance up to 1000 AC volts. It is primarily used by electricians and technicians to diagnose insulation issues in electrical systems. For instance, when troubleshooting a motor, the multimeter can help identify if insulation breakdown is causing current leaks, ensuring safety and system reliability.
  • Question: What are the key features of the OTC Insulation Multimeter, 1000 AC Volts?

    Answer: The OTC Insulation Multimeter 3990 features high insulation resistance measurement capabilities, multiple voltage ranges, and a user-friendly display. These features enhance accuracy and ease of use in various testing scenarios, from simple home electrical inspections to complex industrial applications. This multimeter also includes safety measures against overload, ensuring safe operations in demanding environments.
  • Question: Can the OTC Insulation Multimeter measure both AC and DC voltages?

    Answer: No, the OTC Insulation Multimeter 3990 is specifically designed to measure insulation resistance and AC voltages. It excels in providing readings essential for diagnosing insulation quality and electrical safety, particularly in alternating current scenarios. For DC measurements, users would need a different instrument, ensuring the appropriate tool is used for accurate results.
  • Question: What is the maximum insulation resistance that the OTC 3990 can measure?

    Answer: The OTC Insulation Multimeter 3990 can measure insulation resistance up to 2 GΩ (gigaohms). This high range allows technicians to effectively evaluate the quality of insulation in various electrical appliances and systems. For example, evaluating older wiring systems will help prevent failures and enhance system safety by identifying potential problems before they arise.
  • Question: How can the OTC multimeter assist in diagnosing electrical issues?

    Answer: The OTC Insulation Multimeter 3990 helps diagnose electrical issues by measuring insulation resistance, which indicates the health of electrical insulation. For example, when inspecting an old generator, the multimeter can detect low insulation readings, signaling potential breakdown and the need for repairs. This proactive approach helps avoid dangerous electrical failures and extends equipment lifespan.
  • Question: What types of industries typically use the OTC Insulation Multimeter?

    Answer: The OTC Insulation Multimeter 3990 is widely used in various industries, including electrical contracting, manufacturing, and facility maintenance. Electricians use it to ensure the safety of installations, while manufacturing plants utilize it for equipment maintenance. For instance, a factory might conduct regular checks on their motors to prevent downtime due to insulation failures, highlighting its importance in maintaining operational efficiency.
  • Question: Is the OTC Insulation Multimeter portable?

    Answer: Yes, the OTC Insulation Multimeter 3990 is designed for portability. Its lightweight design and compact size make it convenient for technicians to carry around on job sites. This portability is especially beneficial for electricians who need to conduct on-site diagnostics in various locations, allowing them to perform insulation tests efficiently without being burdened by heavy equipment.
  • Question: Can the OTC Multimeter be used for non-destructive testing?

    Answer: Yes, the OTC Insulation Multimeter 3990 is suitable for non-destructive testing of insulation in electrical systems. This capability allows users to assess insulation effectiveness without damaging the components being tested. Electricians can use this feature to inspect sensitive equipment, ensuring they remain operational without compromising their integrity during testing.
  • Question: What safety features are included in the OTC 3990?

    Answer: The OTC Insulation Multimeter 3990 includes several safety features, such as overload protection and a clear, insulated casing. These features protect both the user and the instrument during high-voltage tests, reducing the risk of accidental shocks. For example, when performing insulation tests on high-voltage lines, these safety measures offer peace of mind, enabling technicians to focus on obtaining accurate readings without undue concern for their safety.
  • Question: Where can I buy OTC Insulation Multimeter, 1000 AC Volts (3990) in Bahrain?

    Answer: You can purchase the OTC Insulation Multimeter, 1000 AC Volts (3990), from Ubuy in Bahrain. Ubuy offers a seamless shopping experience, along with various purchasing options that cater to your needs, ensuring the product reaches you efficiently. With its comprehensive catalog, Ubuy is a reliable source for acquiring quality tools like the OTC multimeter.

OTC Multi Testers Editorial Review

The OTC Insulation Multimeter,1000 AC Volts 3990 is a solid and well-built unit that offers high-end features at an affordable price. It is an excellent tool for both professional use and DIY repairs. The meter works as expected and provides accurate readings for electrical and temperature measurements. While some customers have reported issues with the temperature attachment and basic functions like DC voltage and continuity, overall, the OTC 3990 is highly recommended for its performance and value.

Customer Reviews & Ratings

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Pros

  • Solid and well-built unit
  • Affordable compared to other brand names
  • Accurate readings for electrical and temperature measurements
  • Suitable for professional and DIY use

Cons

  • Temperature attachment has an open circuit issue

Platform Trust & Buyer Confidence

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4.6/5 148 reviews
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MB
Maryam
Verified buyer

“The order arrived fast and in perfect condition”

2 June 2026 · via Trustpilot
T
trusttaker
Verified buyer

“I loved it. That was my second order, and I am already thinking of placing a third order.”

16-Jul-26 · via Trustpilot
HA
Haitham
Verified buyer

“Trusted merchant”

11 July 2026 · via Trustpilot
MA
Mohammad
Verified buyer

“Excellent quality and very fast delivery, I really appreciate your service, when you work good I will appreciate that, I am very satisfied , thank you”

13 June 2026 · via Trustpilot
LA
Lulwa
Verified buyer

“I like the package arrived safely”

17 June 2026 · via Trustpilot
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BHD 361

Order now and get it around Sunday, September 06

QTY:

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Features & Benefits

  • Output test voltages of 50/100/250/500/1000VDC
  • Measure insulation resistance from 0.1 megohm to 600 megohm
  • Backlit LCD display for easy reading
  • Maximum AC amps of 600mA and maximum DC amps of 600mA
  • Maximum AC volts of 1000 and maximum DC volts of 1000
  • Includes features like auto power off, diode test, auto ranging, and data logging

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