What is the AA400510 window contact switch used for?

It is used as an optional installation accessory and suitable safety switch for ventilation hoods with air extraction mode when these are installed together with a chimney-vented fireplace, where the hood’s power supply line requires such a device.

Which ventilation appliances can the AA400510 be combined with?

It can be combined with motorless appliances and is intended for use with appliances that have a connecting contact for a window contact switch, including the ventilation 400 series and Vario downdraft ventilation 200 series.

How does the window contact switch affect appliance operation?

When connected, the ventilation appliance only works when the window is open. However, the lighting on the appliance continues to work even if the window is closed.

Who is allowed to install or connect the AA400510?

Work on the connecting contact for the window contact switch may only be carried out by a suitably qualified electrician and must comply with the applicable national regulations and standards.

Does the lighting switch off when the window is closed?

No. With the window contact switch connected, the ventilation function only operates when the window is open, but the lighting works even when the window is closed.

Product Information Sheet

Gaggenau Window Contact Switch

SKU: AA400510

Woodalls 1053–1055 Finchley Road, London, NW11 7ES
+44 (0)208 455 3925 · [email protected] · www.woodalls.co.uk

Mon–Fri: 9:00am – 5:00pm | Sat–Sun: Closed

Printed 20 July 2026

Gaggenau AA400510 Window Contact Switch

SKU: AA400510

The AA400510 window contact switch is an optional installation accessory designed for use with suitable ventilation appliances, including the ventilation 400 series and Vario downdraft ventilation 200 series. It functions as a safety switch for ventilation hoods with air extraction mode when used with a chimney-vented fireplace. When correctly connected, the ventilation appliance only works when the window is open, while the lighting continues to operate even if the window is closed.

5 Year Warranty

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Product code	AA400510
Product type	Window contact switch
Category	Optional accessories – installation accessories
Suitable for	Ventilation hoods with air extraction mode used with a chimney-vented fireplace
Compatible ventilation series	Ventilation 400 series; Vario downdraft ventilation 200 series (with connecting contact)
Appliance type compatibility	Can be combined with motorless appliances
Operating condition	Ventilation appliance operates only when the window is open (with switch connected)
Lighting behaviour	Lighting works even if the window is closed
Installation work requirement	Connecting contact work only by suitably qualified electrician, following applicable national regulations and standards
Dimensions	Not stated in source
Electrical data	Not stated in source

Delivery & Returns

Delivery

Free delivery to London addresses to ground floor only (service lift access accepted). Some appliances carry standard manufacturer delivery charges — confirmed at time of quotation. UK mainland delivery available for an additional charge. Lead times vary by make, model, and manufacturer availability.

Installation

We do not install appliances. We can recommend vetted fitters operating within London — payments are made directly with the fitter. Woodalls accepts no responsibility for installation work carried out by any third party.

Returns

14-day return window from the day after delivery. Items must be unused, uninstalled, and in original packaging. View our full returns policy →

Authorised Dealer

All products are supplied as an authorised Gaggenau dealer, with full manufacturer warranty. Established 1967.