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Handheld Micro-Ohmmeter which generates DC current up to 300A.

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Box 8kg 44L 38W 18H
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The RMO-H micro ohmmeters are ideal for a number of applications for contact resistance measurements of non-inductive test objects. Typical applications are testing a circuit breakers and disconnecting switches, high-current bus bar joints, cable splices, welding joints, etc.

The set is equipped with the thermal and overcurrent protection. The RMO-H has a very high ability to cancel electrostatic and electro-magnetic interference in HV electric fields. This is achieved by very efficient filtration utilizing a proprietary hardware and software.

Operation: Central push button testing and function keys Working temperature range: -10 °C … +50 °C

Operating temperature range: 0 °C … +35 °C Nominal temperature range: 18 °C … +28 °C Storage temperature range: -30 °C … +60 °C

Battery life span: with IEC LR6/type AA: typ. 3000

Weight: ≤ 1.1 kg without accessories ≤ 5.5 kg incl. accessories and batteries in carrying case |

Case material: NORYL, shock -and scratch proof thermoplast

Key Features

  • Measuring range: 0,1 μΩ – 3000 mΩ
  • Resolution: 0,1 μΩ
  • Typical accuracy: ± (0,1 % rdg + 0,1 % FS) up to 1Ω range
  • Handheld, only 0,95 kg (2.1 lbs) weight
  • IP54 mechanical protection rating
  • Designed to make multiple measurements and full day’s work of testing without a battery recharge
  • Safe testing in Both Sides Grounded (BSG) conditions
  • 1 meter cables


  • Circuit breaker testing — The DV Power RMO-H 300A micro-ohmmeter is essential for assessing the contact resistance of circuit breakers. Its precise measurement capabilities ensure that the breakers function reliably, preventing potential failures due to poor contact quality or degradation over time.
  • Disconnecting switches inspection — This micro-ohmmeter is adept at evaluating disconnecting switches. By measuring contact resistance, it helps in identifying issues like wear or corrosion. Timely detection and maintenance of these switches are crucial for the safe operation of electrical networks.
  • High-current busbar joint analysis — The device is ideal for inspecting high-current busbar joints, ensuring these critical connectors in electrical systems have low and stable resistance.
  • Cable splices assessment — By measuring the contact resistance of cable splices, the RMO-H 300A plays a crucial role in verifying the quality of cable connections. This ensures effective electrical conductivity and the long-term reliability of cable networks, particularly in high-stakes environments.
  • Welding joint evaluation — This micro-ohmmeter is highly effective in testing the resistance of welding joints. Accurate resistance measurements help assess welds’ quality and durability, which is crucial in various industries.

Rent the DV Power RMO-H 300A micro-ohmmeter today

Choose Brandis Hire for your technical equipment needs and experience seamless service. With our straightforward online ordering system, you can hire the DV Power RMO-H 300A micro-ohmmeter in minutes. Our commitment to customer care and flexible hire options make us the ideal partner for your project needs. For efficient delivery and pickup options, submit a booking request or contact us for more information.


Why choose the DV Power RMO-H 300A micro-ohmmeter?

The DV Power RMO-H 300A micro-ohmmeter is a top-tier choice for precision testing in electrical systems. Its standout feature is the ability to generate up to 300A DC, ideal for rigorous testing scenarios. It’s uniquely equipped to cancel electrostatic and electromagnetic interference, ensuring accuracy even in high-voltage environments.

Lightweight and portable, it’s designed for field use, with a robust IP54 rating and a long battery life for extensive testing without frequent recharging. Its versatility makes it suitable for various applications, from circuit breakers to welding joint inspections.

What other micro-ohmmeters do you offer for hire?

At Brandis Hire, we offer a broad array of other micro-ohmmeters for various settings and applications. Here’s a glimpse of our available options:

  • DV Power RMO200A Micro-Ohmmeter — Specialising in high-precision resistance measurement, it offers a test current of up to 200A and is ideal for various applications, including switchgear and busbar joints testing​​.
  • AEMC 6240 — Known for its versatility, this model provides accurate low-resistance measurement, suitable for quality control and maintenance tasks​​.
  • Sonel MMR-650 — It stands out for its user-friendly interface and precision in low-resistance measurements, suitable for testing electrical connections and components​​.
  • Megger DLRO10 — This model is renowned for its practicality and precision in low-resistance measurement, making it a suitable choice for various industrial and electrical applications​​.
  • Megger MOM2 — A portable and efficient micro-ohmmeter known for its ease of use and accuracy in resistance measurements in electrical installations and components​​.
  • Megger DLRO600 — This is a robust and reliable tool designed for precision in measuring resistances in various industrial applications, especially where high-current output is required​​.
  • AEMC 6250 — This model is distinguished by its ability to conduct tests on both resistive and inductive materials, offering flexibility and precision in a variety of testing scenarios​​.
  • Megger DLRO100X — Notable for its portability and safety features, it’s designed for low-resistance measurements across multiple applications, including remote locations without mains power​.
  • AEMC 6255 — The AEMC 6255 stands out with its 0.05% tolerance accuracy and ability to test both resistive and inductive materials. It offers three test modes — resistive, inductive and auto​​​​.
  • DV Power RMO-H23 300A — This model measures the contact resistance of non-inductive test objects like circuit breakers, disconnecting switches and cable splices. It features thermal and overcurrent protection, a high-accuracy measurement range and efficient cancellation of electrostatic and electromagnetic interference.

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