After posting the above, I found that there is a better deal on these blocks from the CZH-LABS website:

CZH-LABS web page for power distribution modules

UPDATE:  On some items you need to order at least ten units to get a lower price.  However, it appears they do offer free shipping regardless of quantity.

Pete,

They look like an excellent choice for wiring.

@PGentieu posted:

After posting the above, I found that there is a better deal on these blocks from the CZH-LABS website:

CZH-LABS web page for power distribution modules

There's quite a large variety of unique terminal strips at this site that you don't see every day. Some look pretty interesting. Thanks for the link!

Interesting, but I think they have a little error in their application suggestions...   This is a 16 amp rated block, but unless the PCB traces are rated at 64 amps, not to mention the end connectors as well, this wiring method imposes significant limitations on it's current carrying capability.

@gunrunnerjohn posted:

Interesting, but I think they have a little error in their application suggestions...   This is a 16 amp rated block, but unless the PCB traces are rated at 64 amps, not to mention the end connectors as well, this wiring method imposes significant limitations on it's current carrying capability.

Theoretically true.  However,  in practical applications, 64 amperes is many times over any current or power source used in O scale model railroading.  I think of it like the 15-ampere rated outlets or receptacles in a house wiring circuit - there may be four or more outlets on a single 15-ampere circuit breaker protected line but the total demand on the line does not normally exceed 15 amperes regardless of how many receptacles are in use. 

Certainly true Peter, I was just amused at the lack of expertise in hawking their product.

My recollection is that the MTH 24 port terminal block also provides "parallel" connections with both + and - terminals on the same side of the block; albeit at a more expensive price point. It's a little confusing, but note that the A+ and B- markings next to the red and black connection posts do not mean that + is all on the left side and - is all on the right side.

Has anyone used DIN Rail Terminal Blocks when wiring up their train table? I built and designed control panels for pump systems and other industrial/commercial equipment in another career/life. The blocks I used to build those out are completely scalable, modular, buss-able, and can really keep things tidy and serviceable. They tolerate up to 20~50 amps of up to 300~600 volts so I'm certain they'd tolerate my choo-choo trains. I am planning a table, I hope to start next year. The image is a section of a control panel from a pump station, but I'm sure you see how these could be used for complicated toy train tables. The two links below are just quickly searched from the web. The blocks mount on DIN Rail so that they can be moved/changed if needed and come in several colors that can be used to help keep things straight visually, and can be numbered & labelled.  Some screw down and some are screwless (they clamp/pinch the wire) and are still rated for similar electric loads.

https://a.co/d/7hziIqg

https://www.automationdirect.c...ccessories/dn-q12b-a

I used DIN rail extensively on my layout, particularly for extending Fastrack switch controller wires. I use 4 wire phone cable because the colors match. I have had to replace some Euro style strips because the screws will cut the wire, especially solid strand phone wire. The DIN rail style that clamps the wire is so much more reliable. I did have trouble finding buss bars for different styles, though. Some of them were two tiered. I never could find the ones that make the wires look like @woodsyT's picture.