IDEAL Industries In-Sure® Push-In Wire Connector

Three versions: a 2-port (30-1632), a 3-port (30-1633), and a 4-port (30-1634). You pick the port count to match how many conductors land in that splice, one wire per port.

Yes. The In-Sure push-in connectors are approved for bonding and grounding applications, so they can be used on the equipment grounding conductors as well as line and neutral splices.

For straight splices in a device or fixture box they are a direct alternative. You push the stripped conductor straight in instead of twisting, insertion force is low, and the clear shell lets you eyeball that each wire is seated to depth, which you cannot do inside an opaque wire nut. Wire nuts still have the edge when you need to combine a wide mix of conductor sizes in one splice or stuff a very crowded box, since the In-Sure body is a fixed port count, 2, 3, or 4.

The shell is UL 94V-2 flame retardant and rated to 105 C (221 F). That covers it for use in luminaire and device boxes where splices sit against warm ballasts or drivers.

Look through the shell. The In-Sure housing is clear specifically so you can see the stripped copper seated past the contact inside the port. Give the conductor a light pull test as well, but the visual check is the point of the clear body.

The Model 33 3-port orange (30-1633) is packaged as a box of 5,000, which is the quantity electricians buy for tract or multi-family rough-in rather than a service-call handful.

Box fill is where push-in connectors help. The In-Sure body is compact and the conductors enter from one end in a straight line, so the splice stacks flatter at the back of the box than a twisted bundle under a wire nut. The grip is shaped for one-handed insertion, which matters when you are working a deep box full of devices.