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

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

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.

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 riskBetter 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

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.

Great product great price and quick delivery

Used this to changeover 2 inverter inputs to 1 AC output. There is extremely little space available in this unit to make all the connections. A jumper wire has to be installed to make it work as a changeover switch. The size of larger wires makes it very awkward to make all connections inside the supplied housing. I had to mount this unit onto another box and extend the connections to there. Also, the connections to the switch itself require small fork crimps: this limits the wire size and this may impact the highest safe working current. Other than these issues it seems to work fine.

This is a very well-made switch with accessible and secure connection terminals. I use it for switching between two standby mains generators before the current one runs out of fuel. If switched quickly the domestic load sees only a very brief interruption, not normally long enough to reset clocks, timers, etc.The central off position ensures that there is no possible short between inputs.This arrangement gives me effectively continuous standby power, necessary in our location from time to time, at the small cost of popping out to the generator shed every 4 hours or so, to switch over, and, after a cooling down period, re-fuel and check the oil level of the standby generator.I have two reservations about the switch:Firstly, the space inside the switch box is very tight. It is difficult to squeeze 3x13 amp cables and links into the available space.Secondly, the switch is provided with only two knock-out holes and weather-proof glands, each capable of accommodating one 13-amp cable, but not two. A change-over switch normally requires one input and two output cables. I used Gaffer Epoxy Putty to create a solid weather-proof seal for two input cables.On the hole, however, this switch is highly recommended - but make sure you figure out the wiring diagram carefully.

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

Facile à monter et bien expliqué

Works as it should

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

Lo he usado para poder alterna entre dos pozos de extracción de agua q no pueden funcionar a la vez y muy bien me daba un poco de miedo por el tema del arco eléctrico, pero ha resultado funcionar a la perfección. Ha dado muy buen resultado.