Blackburn CSP300 CU TP SPLICE SHORT BRL 300 WHT

The CSP300 is sized for 300 kcmil copper conductor, which is what the 300 in the catalog number and the white color code both indicate. It is a compression splice, so the conductor is inserted and crimped with a die-matched compression tool rather than bolted.

No. The CSP300 is a copper-bodied splice made for copper conductor. For aluminum or AL/CU dual-rated work you need a barrel marked for aluminum, typically one supplied with oxide-inhibiting compound. Putting aluminum in a copper-only barrel risks a galvanic connection.

Yes, it carries a 35 kV rating, so it can be used in medium voltage splices up to that class as well as in 600 V work. The rating covers the connector itself; the insulation and shielding over the splice come from your splice kit or tape build.

A short barrel splice uses fewer crimps per side and takes up less length along the cable, which matters in tight pull boxes, manholes, and inside premolded or heat shrink medium voltage splice bodies where the finished joint has to sit within a fixed sleeve length. Long barrel splices give more contact area and more crimps, and are the usual pick where there is room and where higher pull-out resistance is wanted.

The barrel is tin plated over copper, which is the standard treatment for splices that sit in wet locations, manholes, and underground enclosures. Tin slows oxidation of the copper at the conductor interface and keeps contact resistance stable over time.

White is the color code stripe on this barrel, and it is how a crew identifies the correct compression die and conductor size on the job without reading the stamped catalog number. Match the white die index on your crimper head to the white band on the splice.

It is sold each, so you order the exact count of splices the job needs rather than a fixed carton quantity. Remember a three-phase cable splice needs one per phase plus any neutral or ground splices.