Megger · Circuit breaker testing
Megger MOM3 Handheld Micro-Ohmmeter
$155 per day ex GST, 1 to 7 days
Per day, AUD ex GST. The rate for your total hire length applies to every day, and the total never drops at a band change. Minimum hire one day. Australia-only hire; freight and handling quoted separately. Hiring for more than 90 days? Call for a long-term rate: 1300 730 499
Work out your hire
Pick your first and last day to see the hire charge.
| 7 days | $1,085 |
|---|---|
| 14 days | $1,953 |
| 28 days | $3,255 |
| 60 days | $5,859 |
- Delivery or collection
- Freight Australia-wide, quoted with availability, or collect from Hobart, Launceston, Adelaide or Newcastle. Urgent? Call 1300 730 499 rather than send the form.
- Datasheet
- Manufacturer's datasheet (PDF). Calibration certificate supplied with the instrument.
Overview
About the Megger MOM3 Handheld Micro-Ohmmeter
Description
The Megger MOM3 is a 300 A handheld micro-ohmmeter: a powerful, portable instrument designed to measure very low resistances (typically in micro-ohms) with high accuracy at high current output. Delivering up to 300 A DC, it is well-suited for testing circuit breaker contacts, busbar joints, transformer tap changers, disconnectors, and welded bonds, where precise resistance measurement is essential to verifying integrity and performance. The handheld design allows for field portability without compromising power or accuracy, making it a preferred choice for utilities and HV service providers conducting commissioning, maintenance, or fault-finding.
Features
- High-output test current up to 300 A DC
- Resistance measurement range: 0.1 µΩ to 3,000 mΩ
- Four-terminal (Kelvin) measurement eliminates lead resistance errors
- Lightweight, handheld design for maximum portability
- Large digital display with real-time measurement updates
- Auto-hold or continuous test modes available
- Audible indicators and over-temperature protection
- Lithium-ion battery operation: up to 500 measurements at full current per charge
- Supplied with Kelvin clamps on a 3 m cable set, plus Kelvin probes
- Ideal for substations, switchyards, and industrial HV environments
Specifications
| Test current | 5 A to 300 A DC, selectable (300 A at up to 2 mΩ) |
|---|---|
| Resistance range | 0.1 µΩ to 3,000 mΩ, auto ranging |
| Resolution | 0.1 µΩ (lowest range) |
| Accuracy | ±0.1% of reading ±0.05% of range |
| Measurements per charge | Typically 2,000 at 50 A, 1,500 at 100 A, 500 at 300 A |
| Battery | Li-ion 19.8 Wh, typical recharge 3 h |
| Data storage and interfaces | More than 2,000 results, USB-C, Wi-Fi to Megger EGIL200 |
| Operating temperature | -20 °C to +50 °C |
| Weight and dimensions | 1.15 kg, 230 x 108 x 98.5 mm |
Manufacturer's published specifications. Your quote confirms the configuration supplied.
What’s in the case
- MOM3 300 A micro-ohmmeter
- Kelvin clamps with 3 m cable set
- Kelvin probes
- Power adapter or charger
- Quick-start guide
- Transport case
Calibration
All Megavar test equipment is maintained under a documented calibration programme. Instruments are calibrated either by external calibration laboratories or in-house against reference standards that are themselves laboratory-calibrated, with measurement traceable to Australian national measurement standards held by the National Measurement Institute. A current calibration certificate is available on request. If your project requires a specific calibration interval, test standard, or documentation for a client submission, tell us at enquiry on 1300 730 499 and we will confirm what applies before you commit.
Often hired with
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Why hire from Megavar
A Tailored Hire Experience That Works for You
At Megavar, our dedicated test equipment hire division provides high-quality electrical testing instruments for both short and long-term use. Our team makes sure you receive the right tools, ready to go, every time. From fast dispatch to door-to-door freight, our hiring process is streamlined to get you up and running quickly and confidently.
- Rapid delivery and collectionDoor-to-door freight for minimal downtime
- Fast, simple bookingsPlace an order and we’ll handle the rest
- Fault supportIf a set plays up, call us and we will arrange a fix or a replacement.
Our 3-step easy process
Hiring Made Easy in 3 Simple Steps
Step 1: Request a Quote
Submit your rental request online, and our team will respond promptly with availability and pricing.
Step 2: Organise Your Rental
Once confirmed, we’ll quickly process your booking and dispatch the equipment. Delivery and collection can be arranged to suit your schedule.
Step 3: Use with Confidence
Supplied with the manufacturer’s manuals. If a set plays up, call us and we will arrange a fix or a replacement.
How the hire works
Hire terms in brief
After you enquire
We confirm availability, rates and freight in a written quote, valid for the period it states (usually 14 days). An enquiry or quote does not reserve equipment: the hire is booked when your purchase order, signed quote or email acceptance reaches us.
Hire period
Our carrier: up to 72 hours of transit each way is not charged as hire. Hire starts at delivery or 72 hours after dispatch, whichever is earlier, and ends at handover to our carrier or 72 hours before the equipment arrives back, whichever is later. Delay caused by us or our carrier is not charged. For example, dispatched Monday 10am and delivered Wednesday 2pm: hire starts Wednesday 2pm. Routes that normally take longer than 72 hours are marked on the quote. Your own freight: hire runs from handover to your carrier at our office until the equipment arrives back at our office. Collect in person: from collection to return.
Extensions and early return
Contact us before the return deadline to extend; your quoted rates stay fixed and extended hire is invoiced every 7 days. Return early and you pay only for the days used, at the rate band for the days actually hired.
Delivery and returns
Freight for each leg, the handling fee and any express dispatch are on the quote, before you accept. Returns go to the dispatching office named on the quote, by carrier or in person, never by post.
Counter times
Returned to our counter before 9am on a business day counts as the previous day. Collected after 4pm on a business day, hire starts the next day. Weekends and public holidays count as hire days.
Calibration and checks
Supplied in working order with listed accessories, leads and manuals. Each measuring instrument is calibrated, and its current NATA-traceable calibration certificate is available on request. If calibration falls due during your hire, we tell you before dispatch.
Cancelling or moving a booking
Cancel 5 or more business days before dispatch or collection and nothing is charged. With 2 to 4 business days’ notice, the charge is the greater of one day’s hire and 5% of the booked hire; with less notice, the greater of one day’s hire and 10%. You can ask once to move the start by up to 30 days, with at least 2 business days’ notice.
Loss, damage and insurance
The equipment is your responsibility, other than fair wear and tear, from the start of hire until it is back with us, including in transit, up to the replacement value cap shown on the quote for each item. No damage waiver is offered. We recommend you insure the equipment for its replacement value.
Payment and bond
Account customers pay each invoice within 14 days. Without a credit account, or paying by card, you pay the booked hire, freight, handling fee and any bond before dispatch. A bond applies only where the quote states one, and is refunded after return and inspection, less anything owed.
Summary of our Terms and Conditions: Test Equipment Hire. Full hire terms
Enquire about Megger MOM3 Handheld Micro-Ohmmeter Hire
When and where do you need it?
Send your hire dates and delivery location and we will confirm availability and lead time by the end of the next business day.
Or call us directly on 1300 730 499
Need help with your rental?
1300 730 499 We’re available Monday to Friday, 8:30 am to 5:00 pm. Urgent hire: call rather than send the form. rentals@megavar.com.auQuestions about this hire?
Call 1300 730 499 for availability, rates and booking. If a set plays up during the hire, call us and we will arrange a fix or a replacement. Counter collection and returns 8:30 am to 5:00 pm, Monday to Friday.
FAQ
Frequently Asked Questions
Megger MOM3 Handheld Micro-Ohmmeter
What does a micro-ohmmeter measure?
It measures extremely low resistance values, typically in the micro-ohm range, to assess the quality of electrical connections in high-current paths.
What makes this model different?
This unit delivers up to 300 A DC, which ensures more accurate readings in real-world conditions, especially where surface oxidation or high-current validation is needed.
What applications is it used for?
• Circuit breaker contact resistance testing
• Busbar and switchgear joint testing
• Transformer tap changer resistance
• Earth bond verification
• Weld integrity testing
Is it safe to use in substations?
Yes. It’s designed for field and substation use, with rugged construction, insulated clamps, and built-in safety features.
Does it require special leads?
Yes. It uses Kelvin-connected high-current leads to ensure accurate measurements. Kelvin clamps on a 3 m cable set and Kelvin probes are supplied with the rental.
Can it log or store test results?
Yes. The MOM3 stores more than 2,000 test values and transfers them to a PC over USB-C as CSV files.
What’s included in the rental?
• 300 A Micro-ohmmeter main unit
• Kelvin clamps with a 3 m cable set, plus Kelvin probes
• Power adapter or charger
• Quick-start guide and transport case
What support comes with the hire?
Each instrument is supplied with the manufacturer’s manuals. If a set plays up, call us and we will arrange a fix or a replacement.
What’s the minimum hire period?
The minimum hire is one day. The daily rate steps down for hires of 8 days or more, and longer project hires can be quoted on 1300 730 499.
Do you deliver Australia-wide?
Yes. We provide nationwide delivery and collection. You may also arrange your own logistics if preferred.
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