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H-STRNGTH SPLITBLT CONN 4SLD-8SLD
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 4H3 – Frequently Asked Questions
1) What wire sizes does the Blackburn 4H3 split bolt connector take?
The 4H3 is rated for a run of #4 solid down to a tap of #8 solid, which is where the "4SLD-8SLD" in the part description comes from. It is a mechanical connector, so the conductors are clamped between the bolt body and the pressure bar rather than crimped or soldered.
2) Can I use a 4H3 split bolt on a copper ground conductor?
The 4H3 body is bronze alloy, which is the standard material for copper-to-copper mechanical taps and grounding connections. Keep it to copper conductors within the #4 to #8 solid range; bronze split bolts are not intended for aluminum or copper-to-aluminum transitions, which need a connector specifically rated AL/CU.
3) Do split bolt connectors like the Blackburn 4H3 need to be taped or insulated after installation?
Yes. The 4H3 is a bare bronze mechanical connector with no insulation of its own, so the completed tap has to be insulated to the level of the conductor insulation, normally with rubber splicing tape covered by vinyl electrical tape, or with a snap-on split bolt insulating cover sized to the connector.
4) How is a 4H3 split bolt different from a crimp sleeve or a set screw tap?
A split bolt is a bolt with a slot through it: the run and tap conductors drop into the slot and a nut draws a pressure bar down on them, so it installs with nothing but a wrench and can be taken apart later. Crimp connectors need a matching die tool and are permanent. Set screw taps and insulated multi-taps are quicker where several conductors land on one point, but a split bolt is the usual choice for a single tap off a run.
5) Is the Blackburn 4H3 sold individually or in a bag?
It is sold each, one connector per unit, under manufacturer part number 4H3. Order quantity to match the number of taps in the job, and remember each one needs its own tape or insulating cover.
6) Where is the Blackburn 4H3 connector made?
Manufactured in Mexico. That matters if you are filing country-of-origin documentation on a government or institutional project.
How fast can I get the Blackburn 4H3 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 4H3 come with a warranty?
Absolutely. The Blackburn 4H3 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 4H3?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the Blackburn 4H3 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support,
and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.