Heschen Changeover Switch SZW26-20/D202.2D with Box 3 Position 8 Terminals

This changeover switch is nicely made inside and out with a good positive action. Be aware though that there's not much space inside the enclosure. If you want to put jumper wires between terminals (for example if you want to be able to divert mains electricity to one of two devices) then fitting all the wiring into the box gets pretty tight. There's nothing in the way of instructions with the switch, but there are good YouTube videos which will tell you what to do.

I fitted this switch onto my Amateur radio gear to throw power between the mains transformer and a high capacity battery. it's really solid and sure and had a zero position in the middle so as to avoid any chance of cross connecting. I see a few people online complaining that the space is a bit tight to wire it up but if you take your time and measure the wires properly you'll get it back together without a problem. I would buy it again if needed. Very solid and sure with positive click when changing position.

Seems well made, but beware this might not do what you think it will do, or least not with out some extra and fiddley wiring. If you want to simply switch between two mains sources, this is not an out of the box solution, its a cam Selector changeover switch, which means that effectively 4 switches, with two being on (closed) in position 1 or 2 or all open (off) in center position. This means you have to join up two for Live output and two for the N output. Not that difficult, but a proverbial pain in the ..... Get it wrong and things can go spectacularly wrong rather quickly! Have attached a possible solution, but check your connections, they may be different, and buzz things out before applying mains! Its your risk Better solution for a simple change over of main sources: Decided it was a neater, safer and and better solution to go for a DIN rail switch over with a separate indicator light - housed in a 5 slot Din box - also here of course on Amazon. Should add if you want flexibility in switching then this fits the bill! Would I buy again?- Yes if I needed this switch configuration, for simple mains change over No

A very good switch for the money, nice and a good 45 degree action and a robust box. Can use it for multiple applications but I use it to switch between a boat inverter and Shore power

Very cool item

My only grip, as others have observed too, is that the mounting box is a little too small IMO. Cables can only just be fitted in place within the mounting case. The kit includes all that you need but it's strange that only 2 cable outlets are provided when you really need 3 surely? (Power in, power out 1, and power out 2). The lack of an earthing option also means that you need to provide your own connection block for the (3) earth cables and then squeeze this in too. However, it all worked and I was just about able to then secure the rotary switch to the casing (just) - albeit I used 1.5mm heat proof cable. My use was to be able to select 1 of 2 power options for my immersion heating element in the Hot Water tank: Solar control, or (overnight cheap rate) grid power.

Seems well built. Not much space for your wires once the back is on and all tight but easy to wire up, and feels solid. You could remove the switch from the box and panel mount if you needed. Used in my case to power a diesel heater from one of two sources.

Being in regular use for 6 months works great can't fault it nice and compact but enough room to get the wiring in nicely Highly recommended

EV充電に使用しました、200Vで充電すると契約ブレーカーがトリップする場合に100V切替て使用する。電気工事士免許がある方のみ参考

Funktioniert Preis auch okay

Facile à monter et bien expliqué

Works as it should

Fungerar utmärkt. Använder för omkoppling mellan batteri och landström i husbilen.