Taiss Universal Changeover Switch 32A 690V 4 Position 12 Terminals Latching Rotary Cam Selector Switch + SV2-4s Blue Connection Terminal LW26-32 0-3/3

Nice switch for the price. There is an incorrect review here (for the Taiss LW26-20 0-5/3 switch) which may be for another switch in the Taiss line. This switch behaves exactly the way the diagram in the listing shows and has no internal jumpers nor are any of the terminals strapped. Individual pairs of terminals 1-2, 3-4, 5-6, 7-8, and 9-10 are shorted one pair-at-a-time depending on the switch position with terminals 11-12 never being connected or affected by switch position (these are isolated and can be used as connection points). Position 0 leaves all terminals disconnected. As best as can be determined, connections are break-before-make which means one terminal set is disconnected before any other is connected (that description posted elsewhere is a bit confusing). The switch is listed to have silver plated contacts which is another plus if true. These switches are designed for heavy currents but will work for lower currents just fine. The switch operates with little effort and has clean detents for each position. Mounting is achieved by removing the knob and first panel (the one with printing). The small transparent cover and printed layer then pops out and screws pass through the holder and into bolts in the switch body section to sandwich the mounting panel (needs to be drilled with 4 corner holes (approximately 36.2mm center-to-center in a square pattern) between it and the switch body. These screws tighten and then the printed cover is replaced along with the knob, giving the mounted switch an excellent cosmetic appearance and sturdy mounting. Terminals and mounting screws are included, making this a good packaged product. There are no instructions provided with the switch itself, so the listing and the switch terminal connection diagram (shown with this review) are important to note though these can be deciphered fairly easily with a continuity tester. For this price, you get a heavy duty switch which appears to operate well and does exactly what it's supposed to do.

Important to Note: Terminals 2 & 4 are tied together, internally, and Term's 6 & 8 are tied together, internally. The diagram shows this as "1 Phase" and "2 Phase". These connections cannot be removed. There is also a supplied (removable) jumper, installed between Term's 4 & 6, which effectively ties all the even-numbered terminals together. If using a "common" supply (e.g., one input, with four selectable outputs), then leave the jumper in (between 4 & 6) and supply any one of the EVEN side terminals with your "common" supply power. Then the ODD numbered terminals will be switched ON in sequence, as the switch is rotated, as follows: Position 0 (zero) everything is OFF. Position 1: turns on terminal #1 only. Position 2: turns on Term. #3 only, #1 goes OFF. Position 3: turns on Term. #5 only, #3 goes OFF. Position 4: turns on Term. #7 only, #5 goes OFF. In addition, all of the contacts are "Break before Make", so there is "overlap" of the outputs (one turns OFF before the next turns ON). This is a decent rotary switch. It rotates easily without much force, but has good, firm detents in each position. The handle/knob is decently sized, and is easy to operate. I used the 4-position/8-contact unit, along with the small "Baomain" matching enclosure (sold separately, also on Amazon) as the selector switch for a remote, multi-port RF amplifier selector box. It operates remote relays that switch between 1 of 4 different radio amplifiers, using a 12-volts DC supply. Works very well.

Needed to switch between 2 different pieces of 220 equipment. Solved my problem. I bought a larger box to mount it in as the box it comes with is kind of tight for getting 3 leads of 12/3 into it.

If you really need to switch 4 pairs of contacts, this isn't for you. The switch I received has 4 of the contacts common, and simply switches continuity to each of the other 4 contacts individually one at a time (or to none at all, at 0). This works fine for me, and saves me the step of jumpering all the commons (I'm switching one common line among 4 potential outputs). The other issue is that the screw that holds the knob to the selector shaft is comically short. In a piece of notebook paper it might get enough purchase to hold, but in an 1/8" panel it barely bites and mounted in a piece of 1/4" ABS it can't even feel the female threads of the shaft. So I'm going to have to order this tiny silly metric screw from McMaster. Other than those issues, it seems well made and is working fine so far.

I use this for my campervan so I can manually toggle between my new inverter, shorepower and on-board generator to power my outlets as there was limited number of automatic transfer switches to handle three different power sources and they took up more space than my 2 source auto transfer switch. There was no real wiring diagram but the internet has some videos and pictures that show it. As for wiring there is just a load and nuetral and there is no ground on the switch, so the ground should go to the common bus which should be wired to the fuse box. As for placement, it is easy to mount but i would reccomend using a box to cover the wilre also surround the wire and maybe use some liquid electrical tape on the terminals. So far, there has no problems and I have used it for draws up to 30 amps.

Item arrived in good working order, everything was as expected.

semble très solide.

Nice switch, no continuity between switch positions, gives source isolation which is good. Solid feel, good mounting system. 4 stars because I bought the 30 amp switch and although it came with crimp spade connectors they were for max 14 AWG, 30 amp needs 10 AWG, Hence the not perfect rating, it’s a small complaint really, I’d do 4.5. It did exactly what I needed it to do, switch clean between 3 AC sources.