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Eaton 3S 850 USB FR Off-line UPS - 510 W / 850 VA (3S850F)

Off-line UPS with 510 W of usable power, 8 FR outlets (4 of them backed up) and a USB port for automatic PC shutdown.

  • Real output 510 W (off-line)
  • 8 FR outlets (4 backed up + 4 protected)
  • USB port with Eaton UPS Companion software
  • Audible noise < 25 dB
Ref.: 3S850F

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1 669,00 DHincl. VAT1 749,00 DH

You save 80,00 DH incl. VAT

Ends in, ends in 3 days and 7 hours

Configuration · Eaton 3S

In stock

Earn 17 DH in loyalty credit with this purchaseHow does it work?Loyalty credit capped at 300 DH per order.

Receive it between Wed 23 Sept and Fri 25 Sept — delivery 40 DH incl. VAT all over Morocco

Delivery to your address

Receive it between Wed 23 Sept and Fri 25 Sept — delivery 40 DH incl. VAT all over Morocco

The estimate is refined using actual delivery rounds to your city.

  • Free delivery from 3 000 DH of purchases, all over Morocco.
  • Below that, the same rate in every city for parcels up to 30 kg (delivery to your home or workplace) — the exact amount is shown above, then in the basket.
  • Above 30 kg, the rate follows the parcel's weight. In Casablanca, the flat rate holds up to 120 kg.
  • You are notified by SMS, then called by the courier before your parcel is handed over (delivered by Sapress).
  • Observed delivery time: 1 to 5 working days depending on the city.
Free in-store collection: Casablanca (within 24 h) · Témara (within 48 h)

In-store collection — free

Casablanca store
We bring it to the store within 24 h
We call you as soon as it arrives in store.

Résidence Manoir des Roses, Lot. 18, Boulevard El Hachmi El Filali, Rond-point Bachkou, Casablanca

Opening hours

  • Mon–Fri: 10am – 7pm
  • Sat: 10am – 2pm
  • Closed on Sundays and public holidays

Payment on site: cash, bank card via terminal, certified cheque.

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Temara pickup point
We bring it to the store within 48 h
We call you as soon as it arrives in store.

Boulevard Hassan II, Résidence Les Perles de Témara, Immeuble 5, appartement 2, Témara

Opening hours

  • Mon–Fri: 8.30am – 1pm / 2pm – 6pm
  • Sat: 8.30am – 12.30pm
  • Closed on Sundays and public holidays

Payment on site: cash, bank card via terminal, certified cheque.

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1 year warranty — free repair in Morocco if it breaks down during the warranty period

1 year manufacturer's warranty

This product is covered for 1 year by a manufacturer's warranty (the brand's official warranty). Your iris.ma invoice serves as the warranty document: keep it safe.

A problem with your product? Don't worry: contact us by phone, WhatsApp or e-mail. Depending on the brand, we direct you either straight to the repairer appointed by the brand to fix your product, or to us — and we take care of the rest.

  • If a repair is possible, it is carried out free of charge.
  • If the product cannot be repaired, the brand offers an exchange for another product.
  • If no product is available, a refund is issued as soon as the brand confirms it.

Faulty straight out of the box? Some brands offer an immediate exchange, others a repair. Contact us to find out what applies to your product.

The warranty covers breakdowns occurring under normal use, as defined by the brand's terms. Product breakage (drop, impact, liquid…) is not covered, nor are certain consumable parts.

New, never opened — our commitment

All our products are new, delivered in their sealed original packaging.

We commit to never sending you a product that has been opened, unboxed or returned by another customer — even one “just opened for checking”.

Any doubt on delivery (damaged box, seal already opened)? Point it out to the courier or contact us immediately: we take the product back and send you another one.

Sales invoice

Every order comes with its sales invoice, included with the parcel (handed over in person for a store collection).

Ordering for a company? Using the details you give at checkout (company name and ICE), the invoice is issued in your company's name, with its ICE.

Need a quote? Request a free quote — reply within 24 working hours.

100% secure payment: Bank transfer · Bank card · Cash on delivery (deposit of 300 DH by card or bank transfer) · Certified cheque

Accepted payment methods

Bank transfer

Simply transfer the amount shown to account 007 826 0002684000000426 89 — SGM2I, Attijariwafa bank. The rest (the reference to quote, sending us the proof, tracking) is explained right after confirmation and by email. An instant transfer is recommended: it saves you 24 hours on the delivery time.

Bank card

Your everyday Moroccan bank card is enough — Visa, Mastercard or CMI, no special card required. Foreign cards are accepted too. Secure payment by Attijari Payment.

Cash on delivery (deposit of 300 DH by card or bank transfer)

Pay 300 MAD up front by card, then 1 369 MAD in cash on delivery. The deposit is not refunded if you cancel your order.

Certified cheque

Certified cheque payable to “sgm2i”. Have your bank certify the cheque, then send us a copy on WhatsApp (+212 6 64 10 46 24) or to service.client@iris.ma — we dispatch as soon as we receive it.

Cash at a bank branch

Pay the cash in at any of the 3,400 Attijariwafa Bank branches in Morocco, to the SGM2I account no. 0268 D 000 000 426. You do not need an account there: your ID and the cash are enough.

The methods offered depend on the order total and the carrier — checkout shows the final list.

Google reviews4.7(553 reviews)
Manufacturer's datasheetView the PDF · 623 Ko — downloadable

Product overview

Entry-level UPS to protect a home computer workstation: offline technology and 850 VA / 510 W.
Technology & protection: during a power cut, it switches to battery within a few milliseconds and protects against surges — the simple, affordable choice for everyday use.
Power: 850 VA for 510 W of real power — a PC, a monitor, an internet box and their accessories.
Outlets: 8 French outlets — 4 with battery backup, 4 with surge protection only — no adapter needed.
Management: USB port to connect the UPS to the PC and trigger its automatic, clean shutdown.
Ideal, for example, for a home computer workstation, an internet box or a games console.
Remember to check how much power your equipment draws and choose the rating according to the runtime you need.

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Technical specifications

Technical specifications
Output voltage230 V (adjustable 220/230/240 V)
Output connections4 FR outlets with battery backup and surge protection + 4 FR outlets with surge protection only
Input voltage220 - 240 V
Input frequency50/60 Hz (range 46 - 65 Hz)
Cord length1.5 m
Voltage range184-264 V (adjustable to 161-284 V)
Input circuit breaker rating10 A resettable circuit breaker
Battery typeCompact sealed lead-acid
Battery replacementBy the user
Battery managementAutomatic battery test, deep discharge protection, LED replacement indicator
Interface port1 USB port (HID compatible, cable supplied)
User interfaceStatus LED (including battery replacement indicator)
Power management softwareEaton UPS Companion (enables safe system shutdown, energy consumption measurement and UPS settings configuration)
Weight (kg)4.3 kg
Dimensions (W x D x H) (mm)335 x 170 x 86 mm
TechnologyOff-line
Power (VA)850 VA
Voltage stabiliserNo
Technical specifications (continued)
USB charging2 USB ports (2 A max)
Data line protectionTelephone / fax / modem / Internet and Ethernet line (RJ11 / xDSL)
Surge protection and filteringBuilt-in surge protector compliant with IEC 61643-1 (IEC 61643-11 class T3)
Cold startYes
Audible noise<25 dB at 1 metre
CertificationsIEC 62040-1 · IEC 62040-2 C2 · IEC 62040-3 · IEC 62040-4 · IEC 61643-11 T3 · CE · EAC · Ukr · Cm · CB report
MountingPlaced on or under a desk · Wall-mounted (built-in system on all models)
Operating temperature0 to 40 °C
Output frequency50/60 Hz
Phase (output/input)Single-phase / Single-phase
Output typeFR outlets
Power (W)510 W
Runtime20 min for a desktop computer; 9 min for an advanced PC or an Internet router; 4 min for a games console + a TV + an Internet router
Form factorTower
Battery-backed outlets3 to 4 outlets
Control & communicationUSB
Warranty1 year

Specific references

EAN743172101808

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Frequently asked questions about this product

How long does the Eaton 3S 850 run on battery?
20 minutes with a desktop computer, and 9 minutes with a more power-hungry PC plus an internet box. These backup times are approximate: they vary with the connected equipment, its configuration, the age of the battery and the room temperature.
Are all eight outlets powered during a power cut?
No: four French outlets are battery-backed and surge-protected, the other four are surge-protected only. So plan your connections accordingly — PC, monitor and internet box on the first four, printer and secondary peripherals on the others.
Does the UPS also protect the internet line and the phone?
Yes, a surge arrester covers the phone line and xDSL in addition to the power outlets, to the international standard IEC 61643-1. It is an often forgotten entry point: a surge coming in through the line can destroy an internet box that the UPS was nonetheless protecting on the mains side.
Can the Eaton 3S 850 be mounted on a wall?
Yes, a wall-mounting system is provided on every model in the range. It lets you get the UPS off the floor — behind a TV cabinet, under a worktop, next to the internet box enclosure — where a conventional tower UPS takes up space.
What happens if too many devices are plugged into it?
A 10 A thermal circuit breaker protects the installation and is reset with a reset button on the unit: there is no fuse to replace. Unplug the excess device before resetting, otherwise the protection will trip again immediately.
Can a phone or tablet be charged on the UPS?
Yes, the 700 and 850 VA models are fitted with two USB charging ports of 2 A maximum. They power a mobile phone or tablet without tying up one of the eight mains outlets, and without needing an extra charger.
Does the PC shut down on its own when the battery runs low?
Yes, thanks to the HID-compatible USB port and its supplied cable: the shutdown software saves your data and closes applications before the battery runs out. It is detected automatically under Windows, Linux and macOS, with no driver to look for.
Can the battery be replaced, and how do you know when?
The sealed lead-acid battery is replaceable, and an LED indicator signals when it is time to do so. The UPS tests it automatically, protects it against deep discharge and can cold start, with no mains power present.
Does this UPS correct mains voltage fluctuations?
No, it is an offline model with no AVR regulator: it passes mains power through as long as it stays within the accepted range, adjustable up to 161-284 V, and switches to battery outside it. Where the voltage rises and falls all day long, a line-interactive UPS is easier on the battery.
Can a NAS, a games console or a TV set-top box be plugged into it?
Yes: the range is aimed at PCs and their peripherals, TV, video and hi-fi equipment — home cinema, NAS, digital set-top boxes —, the internet box, games consoles and office equipment. The only ceiling is the 510 W of usable power, spread across the four battery-backed outlets.
Why are both 850 VA and 510 W quoted for the same unit?
The power factor is 0.6: 850 × 0.6 = 510 W actually available. Always size on watts rather than VA, since your equipment's consumption is measured in watts. Add up the desktop tower, the monitor and the internet box plugged into the battery-backed outlets.
Is the Eaton 3S 850 (3S850F) new and under warranty?
Yes, new equipment, with the invoice serving as the warranty document. The datasheet gives the backup times model by model, the outlet layout and the standards met (IEC 62040-1, 62040-2 C2, 62040-3 and 62040-4).

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