
I ordered these integrated connectors as well as T-connectors to make a low voltage modular wire harness for my lab testing. They worked great. I wasn't sure at first if the insulation knives would go through my wire, but after reading the instructions that said to use pliers to end the short it all made sense and worked great. I'm not sure if you should reuse them, but I made a few mistakes in my design initially and was able to unhook and successfully reuse them. So they are not disposable. I'll probably buy some more.

50-Pack Lever Connectors Nuts 5 Conductor Combination Compact Wire Connectors Fast Connection Terminal 28-12 AWG Multi Type Compatible
23 Review

π WAGO 221 LEVER-NUTS 36pc Compact Wire Connector Assortment: 16x 221-412, 12x 221-413, 8x 221-415
10 Review

Dolphin DC 100S Super Connector Sealant
9 Review

π 50-Piece Compact Wire Connectors with Lever Nuts for Easy and Fast 4-Conductor Combination Terminal Connections - Suitable for Multiple Types, 28-12 AWG
25 Review

π‘ High-Quality Advance ICN-4P32-SC Electronic Fluorescent Ballast: Ideal for 4 Lamps, 32W T8, 120/277V
3 Review

π‘ Hydrofarm Quantum QT400 Dimmable Ballast for 400W Grow Lights
5 Review

Wireless Electronic Ballast Interface Certified
8 Review

π‘ Electronic FL Ballast ICN-4P32-N (Formerly ICN-4P32-SC) for 3-4 F32T8 F40T8 F17T8 Lamps, 120V/277V Compatibility
5 Review