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H-STRNGTH SPLITBLT CONN 350-250
Manufacturer Resources
Product Specs
- Country Of Origin:
- Mexico (MX)
- Product Group:
- Wire & Cable Management
- Product Type:
- Split-Bolt
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Type2:
- Mechanical connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Color:
- Metallic
- Product Material:
- Bronze Alloy
Blackburn 350M – Frequently Asked Questions
1) What conductor sizes does the Blackburn 350M split-bolt connector take?
The 350M is the 350-250 size in Blackburn's high-strength split-bolt line, so it's built for the run and tap combination in that range rather than for small branch-circuit wire. If you're splicing feeders or bonding jumpers in the 350 to 250 range, this is the right body size; for smaller conductors you need a lower-numbered split bolt in the series.
2) Is the Blackburn 350M split bolt UL listed?
Yes. The 350M carries UL file E9809 as a mechanical connector, which is what an inspector or a spec writer wants to see on a tap or splice connection in a panel, pull box, or service enclosure.
3) Can I use this split bolt on both copper and aluminum conductors?
The 350M body is bronze alloy, which is a copper-based material intended for copper conductors. Bronze split bolts are not dual-rated for aluminum; for aluminum or combination copper-to-aluminum taps you want an aluminum-bodied connector rated AL9CU instead.
4) Do I need to tape or insulate a 350M split-bolt connection?
Yes. A split bolt is a bare mechanical connector, so the finished tap has to be insulated after tightening, normally with rubber splicing tape built up over the connector and then covered with vinyl electrical tape, or with an insulating cover sized for the connector. Nothing insulating ships with the connector itself.
5) Should I use a split bolt or a compression connector for a 350 kcmil tap?
A split bolt like the 350M is mechanical: you tighten it with a wrench, so no hydraulic crimper or die set is needed and the connection can be taken apart later for testing or reconfiguration. Compression connectors need the right tool and die and are permanent once crimped. For service and feeder taps in enclosures and pull boxes where you may need access again, the mechanical split bolt is the practical choice; where space is tight or a permanent inline splice is specified, go compression.
6) Is the Blackburn 350M sold individually or in a box?
Sold each. Order the quantity of connectors you need for the job rather than a carton, which is handy when a panel change only calls for two or three taps.
7) What is the exact part number and country of origin on the Blackburn 350M?
Manufacturer part number 350M from Blackburn, made in Mexico. That's the number to quote if you're standardizing tap connectors for the 350-250 range across a facility or matching what's already installed.
How fast can I get the Blackburn 350M delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Blackburn 350M come with a warranty?
Absolutely. The Blackburn 350M is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Blackburn 350M?
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