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At a glance
A compact 20 litre built-in microwave with 800 watts of power, seven automatic programmes and a QuickStart button that runs full power for thirty seconds.
The Series 2 BFL523MS3B is a solo microwave designed to sit in a 50 cm wall unit, freeing the worktop of a countertop model. Its stainless steel front and steel-trimmed controls match the rest of a Bosch kitchen, and at 38.2 cm tall it slots neatly above or below other compact appliances.
Inside there is a 20 litre cavity and a 27 cm glass turntable, driven by up to 800 watts across five power levels from 90 to 800. AutoPilot offers seven preset programmes, four for defrosting and three for cooking, so the common jobs are one dial turn away rather than a calculation.
Ideal for
Compact kitchens
Built for a 50 cm wide wall unit at least 30 cm deep, it takes the microwave off the worktop in a kitchen where surface space is the scarce thing.
Everyday reheating
Five power levels from 90 to 800 watts cover softening butter through to reheating a full plate, and QuickStart gets there in a single press.
Households with children
A control panel lock and an automatic safety switch-off are built in, along with a door contact switch, so the appliance is straightforward to make safe.
Key features
20 litre cavity
A 20 litre interior with a 27 cm glass turntable takes a dinner plate comfortably, with a lacquered grey lining and LED light so you can see what is happening.
800 W maximum power
Full power reaches 800 watts, with 90, 180, 360 and 600 watt settings underneath for defrosting, softening and gentler reheating without drying food out.
AutoPilot 7
Seven automatic programmes, four for defrosting and three for cooking, set power and time for you so the everyday jobs do not need thinking about.
QuickStart button
One tap runs the microwave at maximum power for thirty seconds. For a cup of coffee or a plate that needs a moment longer, it is the fastest route.
Hydrolytic cleaning
A hydrolytic cleaning programme loosens light soiling inside the cavity, so wiping down afterwards takes a cloth rather than a scouring session.
Favourite setting
A favourite button stores one setting you use often, so a repeated power and time combination is recalled with a press instead of being dialled in again.
More to know
Built in, not on the worktop
A countertop microwave takes up the best part of half a metre of surface. This one goes into a 50 cm wall unit, at least 30 cm deep, with a niche of 362 to 365 mm high by 460 to 468 mm wide by 320 mm deep. At 38.2 by 49.5 by 33.5 cm it is a genuinely compact appliance, and the mains cable runs to 130 cm.
Controls you can learn in minutes
There is a rotary dial, a set of membrane keys and a start button with a steel trim, plus a red LED display with an electronic clock timer. Nothing here needs a manual on the second use. Turn the dial, set the power, press start. For anyone who has spent time fighting a touchscreen appliance, that simplicity is a feature rather than an omission.
What a solo microwave does well
This is a microwave only: no grill element, no fan oven function. That focus is why it stays compact and why the controls stay short. It defrosts, heats and cooks, with seven AutoPilot programmes covering the routine tasks and five power levels for everything else. If you already have an oven in the run and want the microwave to be quick and easy to clean, a solo model is the sensible choice. If you want browning or crisping, you need a combination appliance instead.
Specifications
| Brand | Bosch |
|---|---|
| Model | BFL523MS3B |
| Product Type | Built-In Solo Microwave |
| Series | Series 2 |
| Microwave Function | Microwave only (solo) |
| Cavity Capacity | 20 L |
| Maximum Microwave Power | 800 W |
| Power Levels | 90 W, 180 W, 360 W, 600 W, 800 W |
| Automatic Programmes | AutoPilot 7 - 4 defrost and 3 cooking programmes |
| Turntable | 27 cm glass turntable |
| Display | Red LED display with electronic clock timer |
| Controls | Rotary dial, membrane keys and start button with steel trim |
| Interior | Lacquered grey cavity with LED light |
| Cleaning | Hydrolytic cleaning programme (Cleaning Assistance) |
| Door | Side-opening, left-hinged, with open door button |
| Other Features | QuickStart 30-second full power, favourite button (1 setting), control panel lock, automatic safety switch-off, door contact switch, integral cooling fan |
| Cavity Dimensions (H x W x D) | 18 x 28 x 30 cm |
| Dimensions (H x W x D) | 38.2 x 49.5 x 33.5 cm |
| Niche Size (H x W x D) | 362-365 x 460-468 x 320 mm |
| Installation | For a 50 cm wide wall unit, minimum 30 cm deep |
| Connected Load | 1.27 kW, 230-240 V, 10 A |
| Cable Length | 130 cm |
| Weight | 14.0 kg |
| Warranty | 2 Year Warranty |
What's in the box
- Built-in microwave x1
- 27 cm glass turntable x1
- Installation/user manual x1
Compare Similar Models

| Specification | Bosch Series 2 Built-In Microwave 20L - Stainless Steel | Bosch 800W Integrated Black Microwave | Candy Built-In Microwave with Grill - Stainless Steel | Belling 23L Integrated Microwave |
|---|
At a glance
Product information
Delivery
- Delivery for this item:
- Estimated delivery:
- A 2-person delivery service is available for large appliances.
Returns
- Changed your mind? Online orders can be cancelled within 14 days of delivery under EU distance-selling rules.
- Faulty goods are covered by your statutory consumer rights, in addition to any manufacturer warranty.
- Need help? Call us on 01 531 0700.
Recycling your old electricals
Waste Electrical and Electronic Equipment (WEEE) is taken back free of charge on a one-for-one, like-for-like basis. Waste batteries including rechargeable batteries are taken back free of charge. You are not obliged to make any purchase when returning old batteries. Each local authority must also accept household WEEE and small batteries free of charge at its recycling facilities. All WEEE and waste batteries must be recycled and should not be placed in any of your household wheelie bins. Make sure you always recycle all your old electrical goods and batteries.
Take-back is available at Euronics member stores. Find your nearest store or see how take-back works, including collection when we deliver a large appliance.
Warranty and your rights
- Manufacturer warranty
- 2 Year Warranty
A manufacturer warranty is provided by the manufacturer and is separate from your legal rights. By law you are entitled to remedies from the seller, free of charge, if goods are not in conformity with the contract. Those rights are not affected by any manufacturer warranty.
Your legal guarantee: the official EU notice
Tap the notice to open it full size, or read the text version below.
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In Ireland the two-year period is a minimum. The six-year limitation period in which consumers in Ireland can raise a problem with goods is not affected.
Read the notice as text
Legal guarantee
Minimum two-year legal guarantee protection for goods sold in the European Union.
Consumers can claim their rights under the legal guarantee of conformity, for example if goods:
- do not match the description;
- do not function as intended.
Sellers are liable for any lack of conformity which existed when the goods were delivered, and which becomes apparent within the legal guarantee period. Sellers in such a situation are required to offer:
- free repair or free replacement;
- in some cases, a price reduction or full reimbursement.
Some countries have a longer legal guarantee period. For second-hand goods, a shorter period may apply, but not less than one year.
For more information on your rights in a specific country, scan the QR code below or ask the seller. europa.eu/youreurope/guarantees
What to do if you receive non-conforming goods:
- Contact the seller as soon as possible to report the issue;
- Provide proof of purchase, such as a receipt, invoice, or bank statement.
Sellers and producers may also offer commercial guarantees, which apply independently from the legal guarantee. For example, you may see this GARAN label representing a commercial guarantee of durability offered by the producer at no additional cost and covering the entire good.



