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

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Hard Case 15kg 50L 40W 20H
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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
  • 5 meter cables


  • Circuit breaker testing — The DV Power RMO-H23 300A micro-ohmmeter is essential for precisely measuring contact resistance in circuit breakers. This task is vital for their reliable operation and safety in electrical systems, preventing malfunctions and ensuring efficient power distribution.
  • Disconnecting switches inspection — Designed to inspect disconnecting switches, the H23 plays a crucial role in maintaining electrical safety and system integrity by identifying potential wear or damage and ensuring proper functioning.
  • High-current busbar joint analysis — This micro-ohmmeter excels in analysing busbar joints, critical for maintaining low resistance and optimal electrical flow in high-current environments. This guarantees system efficiency and reduced risk of overheating.
  • Cable splices assessment — Ideal for assessing cable splices, the device ensures secure and effective electrical connections, critical for uninterrupted power supply and the longevity of electrical installations.
  • Welding joint evaluation — Perfect for evaluating the integrity of welding joints, it helps ensure strong, durable connections in various applications, critical for structural stability and safety in industrial and construction environments.

Rent the DV Power RMO-H23 300A micro-ohmmeter today

Choose Brandis Hire for your equipment rental needs and enjoy the most efficient service in Australia. Our user-friendly online platform lets you hire the DV Power RMO-H23 300A micro-ohmmeter in no time. We pride ourselves on excellent customer service and adaptable rental terms, including flexible durations and up to four hours of complimentary technical support. Submit a booking request now or contact us for more information.


Why choose the DV Power RMO-H23 300A micro-ohmmeter?

The DV Power RMO-H23 300A micro-ohmmeter stands out for its high-current testing capability, making it ideal for those needing precise contact resistance measurements in various settings. Its ability to generate up to 300A of DC allows for thorough and reliable testing of non-inductive test objects like circuit breakers, disconnecting switches and welding joints. The device is particularly effective in environments with high-voltage electric fields due to its advanced filtration system, which efficiently cancels out electrostatic and electromagnetic interference.

Additionally, its lightweight and handheld design makes it user-friendly and convenient for field use. The micro-ohmmeter’s long battery life supports extensive testing periods without frequent recharging. Its IP54 mechanical protection rating further ensures durability and reliability in various working conditions.

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. Some of the most popular models in our range are:

  • DV Power RMO200A — Specialised in high-precision resistance measurements up to 200A, ideal for testing switchgear and busbar joints.
  • AEMC 6240 — This versatile micro-ohmmeter offers accurate low-resistance measurements, suitable for quality control and maintenance.
  • DV Power RMO-H 300A — This is a robust tool for heavy-duty applications, providing reliable measurements with high test current capabilities.
  • Sonel MMR-650 — This user-friendly micro-ohmmeter excels in precision for low-resistance measurements, ideal for electrical connections and components.
  • Megger DLRO10 — Practical and precise for low-resistance measurements, the Megger DLRO10 is suitable for various industrial and electrical applications.
  • Megger MOM2 — The MOM2 is known for ease of use and accurate resistance measurements in electrical installations.
  • Megger DLRO600 — Designed for precision in industrial applications, the DLRO600 is ideal where high current output is essential.
  • AEMC 6250 — This device lets you conduct tests on both resistive and inductive materials, offering flexibility and precision in testing.
  • Megger DLRO100X — The Megger DLRO100x is known for its safety features and portability, ideal for low-resistance measurements in remote locations without mains power.
  • AEMC 6255 — This model features 0.05% tolerance accuracy, with three test modes for versatile resistive and inductive material testing.

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