Electronics-Salon DIN Rail Mount 30 Position 24A / 400V Screw Terminal Block Distribution Module.

I used these to tidy up a rats nest of wiring for my alarm and control system. The screw terminals are sturdy and they are the "guillotine" style connections, so they dont wear out after a few open/close uses. Its nice that it is DIN rail mount so I can have all the devices easy to move/relocate

This looks like a decent product with very interesting modification possibilities, but I have not burned it in yet!The numbers printed on the device are nice and clear. Quite legible. The black on yellow are formed from a single strip of material and appears to be stuck on nicely. The ones that are white on dark green are actually printed on an underlying green circuit board.I took photos of the 30 Amp device, but it is essentially the same construction as the 24 Amp device.I purchase two, the 30Amp 20 pin version and the 24Amp 30 pin version. Each one has a length of right at 6-3/8". I plan to put them both on a single 12 inch DIN rail and have 30 24Amp connectors and 15 (maybe 16) 30Amp connectors after cutting the 30Amp connector down a bit. I have attached some photos so that you can see other aspects of its construction. Both versions have similar construction. I needed the 30 Amp version for only a few power connections, but do not have space for all 20 connectors so I wanted to see if I could cut it down. It looks easy to do. The end cap comes off with two screws. The housing is a extruded plastic but seems to be strong enough. So it can easily be cut. The electrical connectors are simply soldered to a circuit board which has a thick layer of solder connecting the adjacent connectors and then the board is slid into slots in the extruded housing. Hence, the unit is hollow with some space below the circuit board and yet electrically isolated from the Aluminum DIN. It is not clear to me that the solder, nor the copper, of the circuit board under the solder is really going to hold up to 30Amp, but the metal clamps seem to be pretty good. (See photos)For the cases where there is higher amperage I may solder additional copper bars across the terminals or even simply add at thicker solder layer. My guess is the metal rods from the screw connectors will carry the current this short distance, but there is effectively no way to dissipate heat other than via the wires themselves. One of the advantages of this design is that one can actually build other connections or even a simple circuits inside the housing. In my case, for the low current connections I need some diodes connecting the various positions so I can just solder them inside and not have to add a small circuit board externally! Also, for some of the circuit runs need to be tied together at the terminal, as a common, so I could do this internally rather than trying to push 3 or 4 wires into one screw terminal hole. The biggest problem with doing this will be that the circuits are hidden so documentation is important! Maybe draw the circuit on the face of the device? On the other hand there is a small visible space between the screws running the length of the device. If one drills a small hole straight down between a pair of screws he hits the solder connection in the circuit board. Hence one could solder in the shorts, diodes, etc. at these points and they would be visible, electrically isolated, and yet be mechanically protected by the plastic screw housings! You can see this space in the photo showing the screw heads.The electrical clamps themselves are two pieces of, serrated surfaces, metal pieces with the upper one fixed and feeding down into the circuit board and the other pulls up by the screw mechanism to clamp against the upper one. (These are not simply a screw pushing down on the wire into a curved surface like some of the cheaper devices are made.) Hence, they should be much stronger, and in point of fact maybe able to hold more than one wire, even solid wire. They can certainly hold a ferrule, but because of the way most ferrules have insulating shoulders on them you may not be able to put more than one ferrule into the hole. There is a sharp plastic edge at the top of the hole that protrudes down below the metal clamp surface. My guess is that this is designed to bite into the wire insulation to help secure the wire from pulling out. However, with larger wires one may have to force the clamping screw hard to ensure the wire is properly connected.One other interesting thing is that the extruded housing has a pair of grooves just below the circuit board (visiable from the end view photo) that is just the right width to hold another circuit board. In fact the circuit board holding the screw connectors just fits in this width wise. This groove is used by small tabs of the end plates to mechanically grip the extruded housing. However, these tabs only protude a shore distance and so most of the groove is unused.There is a name molded into the end plate "DINKLE".Over all it looks like a pretty useful screw connector. One caveat might be that if it gets hot the extruded plastic housing might soften?! However, everything important except for the DIN clamp is built onto the circuit board.

After trying a number of alternatives, I keep coming back to these DIN terminal strips. They are well built, they are compact, and they just work really well.

Works perfectly for a 12 pair cable. Nice size screws/compact size. Also, easy to mount with the aluminum channel. (sold separately) Well made.

The first one arrived in the familiar Amazon Bag with no packing and was broken, This one arrived in a box that was factory sealed, Ir fits on the din rail nicely and will work great. Just as good as the more expensive units, maybe better. And as a bonus the Amazon driver actually rang the doorbell.

I know it is not much of an item to be discussing. But for what it is worth being a engineer, I really like this product. I used it for a self-made perimeter alarm. It is made of material that has a good feel and I like the color . More importantly, the terminal numbers are clearly marked in more than one place using different viewing angles which is nice. Sounds ridiculous, I know, but I was really impressed with this product right out of the box and would use this for any kind of project at any time. Anyone that does this kind of work would appreciate what I mean when I say it is really nice.

Lots of connections in a very small space. I'm using this in a Honeywell Vista-20P panel and with some surgical trace cutting on the top & bottom of the board, you can disconnect the terminals from each other (1 to 1 - 2 to 2,etc) and put a supervisory resistor across them. I had to cut 8 terminals and left the remaining intact. It makes the panel much neater and frees up space.

It looks smaller on the picture, but is super well made and very high quality. I'm a repeat customer of this seller and manufacturer.I looked expensive, but the size and quality I got is worth it!