3M H-33-POUCH 3M, Highland, Wire Connector H-33-POUCH, 18-12 AWG, Yellow, 100 perPouch, 100 Pack

The Highland H-33 yellow twist-on connector covers 18 AWG through 12 AWG conductors. That range takes in the common branch-circuit wire an electrician works with day to day, 14 and 12 AWG for lighting and receptacle circuits and 18 through 16 for fixture leads and control wire. Yellow is the color 3M assigns this size band, so a tech pulling one out of the pouch knows the range without reading the box.

No. The H-33 yellow connector carries a maximum recommended voltage rating of 600 V, so 277V line-to-neutral lighting is inside that rating and so is 480V wiring. Where it does not belong is anything above 600 V. For standard 120/277V commercial lighting and 120/208 or 277/480 branch circuits, the rating is not the limiting factor; wire size is.

No, the H-33 is not a flame-retardant connector. If a job spec or a facility standard calls for a flame-retardant insulator on the connector shell, this is the wrong part and you want a connector that states that property. For ordinary branch-circuit splicing in a box, it is a conventional twist-on.

One hundred yellow connectors per pouch. The pouch format is meant for a service van or a tool pouch rather than a shelf, which is the difference between this and a boxed or jar count of the same connector. For a crew trimming out a floor of devices, one pouch covers a day of splices in the 18 to 12 AWG range.

A twist-on like the H-33 is threaded down over stripped conductor ends by hand, the internal spring bites the copper, and the shell insulates the splice. That makes it the standard choice for pigtailing in a device box, joining a hot to a device lead and the feed-through. Push-in and lever connectors are the alternative when you want a straight-in termination without twisting, usually in tight boxes or where conductors are different materials. For ordinary copper-to-copper pigtails in 18 to 12 AWG, the twist-on is what most electricians reach for.

Both. The Highland line is offered in hand driver and power driver options, so a crew running high volume can drive them with a tool instead of finger-tightening every splice. The H-33 itself also suits 3M Performance Plus and 3M Secure Grip wire connector drivers.

Order it as 3M H-33-POUCH. 3M also carries it under catalog number 7010318552. Highland is 3M's economy electrical line, so the H-33 is distinct from the 3M Performance Plus and Secure Grip connectors even though the drivers cross over.