A pass-through switch, also known as a pass-through switch or lamp switch, is a compact and inexpensive element used to control lighting in a home, apartment or company. Mounted on a cable, it increases the functionality and aesthetic value of the lamp. There are various types of pass-through switches to choose from. How do the individual models differ from each other? When is it worth using a pass-through switch? And what should you pay attention to when installing it?

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What is the difference between pass-through circuit breakers?
In the offer of electrical installation shops and wholesalers you can find various types of pass-through switches. Most of them are universal devices, mounted on a cable. Thanks to their simple mechanism of operation, they allow for convenient switching on and off of electrical devices and lighting fixtures connected to the current, e.g. wall lamps, table lamps or furniture lighting.
When choosing a pass-through switch for a planned project, it is worth paying attention to:
- IP protection class – this parameter indicates the resistance of the luminaire to moisture and dust, e.g. IP20 tightness class means that the product is intended for use inside buildings, at a safe distance from a water source;
- material of manufacture – pass-through switches are typically made of plastics, e.g. polypropylene (PP), which of course does not mean that all plastic models will offer the same quality and durability;
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input voltage – e.g. 220-240 V; - rated current – e.g. 2.5 A;
- minimum service life – it is worth choosing a product that has been tested for many thousands of switching on and off;
- mounting method – e.g. using a screw clamp;
- design and size - the cable is usually visible, so try to match the size, colour and style of the through switch to the aesthetics of the lamp and the overall interior design (most products offer a universal, black or white finish, but there are also models designed, for example, in a retro style);
- wire cross-section – make sure the selected switch is compatible with your cable, e.g. 2x 0.75 mm or 3x 0.75 mm;
- quality – check whether the selected switch has a sufficiently long warranty, whether it has a solid construction, is made of durable materials, etc.
Where would a pass-through switch be useful?
Through-hole switches are useful in homes, apartments and offices. They are useful wherever simple and convenient operation of small electrical devices is required. Their installation allows you to freely turn lamps on and off - without the need to carry out renovations, interfere with the electrical installation in the walls and constantly operate the cable. It is easy to imagine how troublesome it would be to connect and disconnect the plugs of all table lamps every day. Through-hole switches are often used in DIY projects. They give an individual character and extend the functionality of home appliances, e.g. night lights. They are also useful in repair work, e.g. of a damaged extension cord.
What to remember when installing a pass-through switch?
First of all, remember that you are working with electricity. So if you do not have the appropriate electrical qualifications, make sure that the switch you are buying offers easy, self-assembly. If such information is not available for a given product, consult the purchase with the seller or a specialist. Always follow the manufacturer's instructions for both the switch you have and the electrical device. Some companies create and share instructional videos on their websites.
Pass-through switches at the Onninen wholesaler
In the Onninen electrical wholesaler you will find through-wire switches of various parameters, coming exclusively from renowned suppliers of home, office and RTV equipment. Our assortment includes, among others, through-wire switches from Zamel – a Polish manufacturer with over 30 years of experience in the electrical industry.