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Bronze split-bolt connector with hex head, plain finish, 2.16 inches long

Thomas & Betts

Thomas & Betts BLACKBURN 40H Split-Bolt Connector 1 AWG to 250 kcmil

SKU CH-5GD2-2S51H

Split-bolt connector joins copper conductors from 1 AWG to 250 kcmil at up to 600 V

  • Product typeElectrical Connectors
  • Connects 1 AWG to 250 kcmil copper conductors
  • Bronze body handles 600 V maximum voltage
  • Hex head design accepts 400 in-lb torque
  • 16 in overall length fits tight spaces
  • 313 in hex nut allows standard tool use

Connector for 1 AWG to 250 kcmil Copper

The Blackburn 40H split-bolt connector joins copper conductors from 1 AWG up to 250 kcmil. It is built with a plain-finish bronze body and a hex head for secure tightening. The connector is rated for 600 volts maximum and suits industrial and automotive electrical work. Torque specification is 400 in-lb for reliable connections.

Verify wire size and torque tool before install

Confirm that all conductors fall within the 1 AWG to 250 kcmil range for equal, run and tap sizes. Ensure a torque wrench capable of 400 in-lb is available for the hex nut. Check that the 600 volt rating matches the circuit voltage. The overall length is 2.16 inches and width is 1 inch for space planning.

Replaces worn or undersized split-bolt connectors

This connector upgrades from damaged, corroded or lower-capacity split bolts that cannot handle the full 250 kcmil range. The jump is worth it when existing hardware shows heat damage, loose fits or voltage-drop issues. It is not for aluminium conductors or for applications above 600 volts. Buyers needing multi-tap blocks or insulated bodies must look elsewhere.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 56% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand nameBLACKBURN
Product typeElectrical Connectors

Questions about this item

Does the BLACKBURN 40H split-bolt connector come with any additional hardware or installation tools?

The connector is supplied as a single bronze split-bolt with a hex head. No extra hardware or tools are included.

Should I choose this 40H model for a 1 AWG copper tap or a 250 kcmil copper run?

This model accepts copper conductors from 1 AWG up to 250 kcmil for run, tap and equal sizes, so it covers both ends of that range.

What does the 600 V rating mean when the connector is installed in a panel?

The 600 V rating is the maximum voltage the bronze body and hex-head bolt are designed to withstand in copper-to-copper connections.

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