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The Mitsubishi Electric MR-CX402EJ-OB-A1 is a 402 L Onyx Black, bottom-mount refrigerator listed with an ice-only dispenser that requires plumbing. Its published dimensions, energy figures and capacity depend on which source and measurement convention you use, so check the exact suffix and installation requirements before buying. CHOICE lists the closely related MR-CX402EJ-OB-A as tested in 2018 and discontinued, but its public page does not show detailed performance scores.
What is the MR-CX402EJ-OB-A1?
Appliances Online identifies the exact MR-CX402EJ-OB-A1 suffix as an Onyx Black, multi-drawer refrigerator with the freezer below the refrigerator. Its listing specifies ice-only dispensing and says plumbing is required. Confirm that the unit, seller listing and any parts or service information all match the complete model code; the related OB-A model identifier is not identical to OB-A1.
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Mitsubishi Electric’s official flyer and operating manual cover the broader MR-CX402EJ family. The manual says the MR-CX402EJ illustrations are used and that operation is the same as the MR-CX370EJ, despite differences in capacity and dimensions. See the manufacturer’s April 2021 CX Steel Series flyer and the MR-CX370EJ/MR-CX402EJ operating instructions.
How much storage does it offer?
Mitsubishi Electric Australia’s 2021 flyer gives 402 L of total gross capacity, divided into 221 L for the refrigerator, 104 L for the freezer and 77 L for the vegetable compartment. Appliances Online’s exact OB-A1 listing instead gives 402 L total, with 298 L for the fridge and 104 L for the freezer. These compartment figures use different capacity conventions and should not be combined or treated as directly interchangeable. Check the basis used by the seller when comparing usable storage with another refrigerator.
#1 Best Overall
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What are the dimensions and installation clearances?
Mitsubishi Electric Australia’s 2021 flyer lists the family model at 1,820 mm high, 600 mm wide and 656 mm deep, or 660 mm deep with the leg cover. The manufacturer recommends clearances of 100 mm above, 20 mm on each side and 50 mm at the back. Appliances Online lists the exact OB-A1 variant as 1,820 × 600 × 660 mm and 68 kg. The retailer’s depth figure and manufacturer’s depth-with-leg-cover figure are close, but measure the actual delivery route and installation space rather than relying on nominal dimensions alone.
Check that the refrigerator can pass through doorways, hallways and turns, and that the site can accommodate the stated clearances. Mitsubishi Electric’s residential support page lists manuals and dimension materials for the MR-CX370EJ/MR-CX402EJ family.
Rank #2
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Does the ice maker need a water connection?
Appliances Online describes the OB-A1 as having ice-only dispensing and requiring plumbing. That means an appropriate water connection is part of the installation, not an optional feature to assume is already included. Confirm the connection requirements with the seller or installer for the specific unit, especially if buying used or from old stock.
How much electricity does it use?
Mitsubishi Electric Australia’s 2021 flyer publishes an energy rating of 3.5 stars and consumption of 351 kWh per year. CHOICE’s public listing repeats those figures for the related MR-CX402EJ-OB-A. Treat them as published figures, not a new measurement or a guarantee of a particular household’s bill; actual cost depends on the applicable electricity rate and use.
Rank #3
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What do independent reviews establish?
CHOICE identifies the MR-CX402EJ-OB-A as a medium-size, freezer-on-bottom refrigerator, lists a 2018 test year and marks that model discontinued. Its public page does not disclose detailed temperature, noise, running-cost or performance results, nor the expert rating and pros and cons. CHOICE lists a 2018 test year, but the public page does not disclose its detailed scores. The identifier also lacks the final A1 suffix, so those public details do not establish identical test results or current status for every OB-A1 unit.
Consequently, the available public evidence supports checking specifications and fit, but not claiming the refrigerator is quiet, especially reliable, or a top performer. Mitsubishi’s residential refrigerator category page provides current category context, not proof that this older model remains available.
Rank #4
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Is the exact OB-A1 model still available?
Current stock for the exact MR-CX402EJ-OB-A1 is not established here. CHOICE marks the related OB-A listing discontinued, while Appliances Online has a listing for the A1 variant; a listing alone does not confirm present inventory. Ask the seller to confirm stock, condition, delivery, installation, warranty coverage and the precise suffix on the unit before purchase.
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What should you verify before buying?
- Confirm the complete model code, including the final A1 suffix, on the product and sales documentation.
- Compare capacity only when the measurement basis is consistent; the manufacturer’s gross compartment breakdown differs from the retailer’s fridge/freezer listing.
- Measure the cavity, clearances and delivery route against the manufacturer’s dimensions.
- Confirm that plumbing is available and suitable for the ice maker.
- Ask for current warranty terms. Appliances Online states a five-year manufacturer warranty and a 10-year compressor/5-year parts-and-labour warranty note on its listing; these are retailer-stated details, so verify which terms apply to the specific unit.
- For a comparison with other refrigerators, use consistent capacity definitions and check dimensions, ice setup, energy information, layout, door access, warranty and current stock and price.
Care and intended use
The manufacturer’s operating instructions describe the refrigerator as intended for general household food refrigeration and freezing, and direct commercial users to choose a commercial refrigerator-freezer. For cleaning, the manual recommends lukewarm water and a soft cloth, warning that cleaning agents can crack plastic components. Follow the manual’s full safety, installation, ice-maker and maintenance instructions for the exact appliance.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

