Blackburn 30SBC-B1-10 1/0 STR-250 KCMIL COPPER SPLIT BOLT

The Blackburn 30SBC-B1-10 covers a range of 1/0 stranded up to 250 kcmil conductors. Both the run and the tap have to fall inside that window, so pairing a 250 kcmil feeder with a small #6 tap is outside what this body will clamp properly. For conductors below 1/0, step down to a smaller split bolt in the range.

It's a copper-bodied split bolt. Copper split bolts are intended for copper-to-copper connections; aluminum and copper-to-aluminum splices call for a connector rated and listed for that combination, typically a tin-plated aluminum body used with an inhibitor compound. Don't put bare aluminum in a plain copper connector.

It ships as a bare mechanical split bolt, sold each. Insulating the finished splice is a separate step: either build it up with rubber splicing tape and vinyl jacket tape, or slip a molded split bolt cover over it. Budget for that on the job, since the connector alone doesn't provide it.

A split bolt like the 30SBC-B1-10 is a mechanical connector: you land the conductors and torque the nut with a wrench, no hydraulic crimp tool and no dies. That makes it the practical choice for field taps, one-off splices, and pull-box work where you aren't carrying a crimper. Compression connectors are the better call when you want a permanent, non-adjustable splice or where the installation spec calls for a crimped connection. For grounding taps, an irreversible compression or exothermic connection is often required instead.

Blackburn 30SBC-B1-10 is the catalog number for the 1/0 stranded to 250 kcmil copper split bolt connector. Order it by that number; it is sold as a single piece rather than in a carton quantity.

The rating on the 30SBC-B1-10 is written for 1/0 stranded through 250 kcmil, which is the size class you'll actually see in feeders and service conductors at those ampacities. In that range conductors are stranded in practice, so the connector is sized around stranded cable.