Blackburn OB 1 AL H-TYPE COMP CONN 1-1/2IN DIE-O

The OB 1 uses die index O. That code is stamped into the connector body, and your compression tool needs the matching O die set to make a listed crimp. Using a different die index on it will not give you the correct compression.

It ships bare with no insulation, so the splice has to be insulated in the field. On a tap you would normally wrap it with rubber splicing tape and an overlay of vinyl electrical tape, or slip an insulating cover over the finished crimp. The bare surface also means it needs an oxide inhibitor treatment typical of aluminum connections.

The OB 1 is an aluminum body connector. Aluminum bodied H-taps are intended for aluminum to aluminum service unless the connector is specifically marked AL9CU for dual rated use. For a copper run or a copper to aluminum tap, ask for a connector marked for both metals rather than forcing this one into the joint.

An H-tap joins a tap conductor to a run conductor without cutting the run. The two conductors sit side by side in the H shaped channel and one compression crimp closes the wings around both. That makes it the go-to for tapping a service lateral, a feeder, or a parallel run where a split bolt would be bulky or a mechanical lug is not practical. It is a permanent, non-reusable joint, so if you need to break the connection later use a mechanical tap instead.

The body is 1-1/2 inches long. Allow for that plus the taped insulation overlap on each end when you are figuring whether the completed splice will lay into a pedestal, a handhole, or a box without crowding the conductors past their bend radius.

They are sold each, so the quantity you order is the number of connectors you get. Worth counting your taps before ordering, since every tap point consumes one connector and they cannot be reopened once crimped.

Manufacturer part number is OB 1, brand Blackburn, and country of origin is Mexico. It is an aluminum H-type compression tap connector, bare, die index O, 1-1/2 inch length.