Swiss SEV 1011 (Swiss 10 A/250 V)(Type J)

regular SEV 1011 plug and covered socket

Switzerland has its own standard which is described in SEV 1011 (ASE1011/1959 SW10A-R).This plug is similar to the Europlug (CEE 7/16), except that it has an offset earth pin and the pin shanks are not necessarily insulated (the pins of most modern appliances are), so plugs partially inserted into non-recessed sockets present a shock hazard. However, since 1 January 2013, only partially insulated plugs of type CEE 7/16 (Europlug, unearthed, SEV 1011 type 11) and of type J plugs (SEV 1011 type 12) are allowed to be imported and distributed and therefore reducing the risk of electric shocks. Sockets used in kitchens, bathrooms and other wet areas are recessed, while those used elsewhere are not (after 2016, only recessed sockets are allowed to be installed in any setting, minimizing the risk of electric shocks). Some plugs and adaptors have a tapered form and can be used in either environment, while others will fit only the non-recessed sockets. Swiss sockets accept Swiss plugs or Europlugs (CEE 7/16). There is also a non-earthed two-pin variant with the same pin shape, size, and spacing as the SEV 1011’s line and neutral pins, but with a more flattened hexagonal form. It fits into Swiss sockets and CEE 7/16 sockets, and is rated 10 A.

The SEV 1011 earth pin is offset by 5mm from the centre line of the line and neutral pins.

The system is modular and allows variants with 5 pins for 3 phases and square pins for 16 A (and the combination of both – see reference). Above 16 A, equipment must either be hardwired to the electrical supply system with appropriate branch circuit protection, or connected to the mains with an appropriate high power industrial connector.

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