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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Group:
- Wire & Cable Management
- Product Type:
- AMT Connector
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809, CSA 6591
- Type2:
- Electrical taps
- Voltage Rating:
- 600 V
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Color:
- Black
- Product Material:
- Aluminum
Blackburn AMTSR250 – Frequently Asked Questions
1) What wire sizes does the Blackburn AMTSR250 aluminum splice connector accept?
The AMTSR250 is rated for conductors from 250 kcmil down to 6 AWG, which is what the "250-6" in the part number designates. It is a single-port splice reducer, so it lets you join a larger run conductor to a smaller tap or continuation within that range.
2) Can I use this Blackburn splice on aluminum conductors, or copper only?
The body is aluminum, which is what makes it suitable for aluminum conductor work. Blackburn builds these AMT-style mechanical connectors as dual-rated AL/CU parts, but confirm the AL9CU marking stamped on the connector body before landing copper on it.
3) Does the AMTSR250 come pre-insulated, or do I have to tape and heat shrink the splice?
It ships with a PVC insulating cover already on it, so you are not building up tape layers or sliding on shrink tube after the crimp. The cover is black. You still need to make sure the cover seats fully over the connector body and conductor insulation once the set screws are torqued.
4) Is this Blackburn connector UL listed and CSA certified for inspection?
It carries UL file E9809 and CSA 6591. Those are the file numbers an inspector or a submittal package will ask for on a 600 V mechanical connector.
5) What size hex wrench or socket do I need to torque the AMTSR250 set screws?
The set screws take a 5/16 inch hex key, as noted by the HEX5/16 in the part designation. Bring an Allen wrench or a 5/16 hex bit driver to the job; nothing is bundled with the connector.
6) Is the AMTSR250 rated for 600 volt service work?
Yes, 600 V is the rating, which covers standard commercial and industrial feeder, branch, and service-entrance splicing at 600 volts or less.
7) Should I use a mechanical screw splice like this or a compression connector for a 250 kcmil aluminum feeder?
A set screw splice such as the AMTSR250 is the choice when you do not want to haul a hydraulic crimper and die set to the work, or when the splice may need to be opened later. You torque a 5/16 hex screw and you are done. Compression connectors make a permanent joint and require the matching die, so they suit shop-prepped or high-vibration installations. For a one-off pull box or panel splice on a 250 kcmil to 6 AWG conductor, the mechanical splice is the faster path.
8) Is the Blackburn AMTSR250 made in the USA for Buy American projects?
Country of origin is the United States, which is the answer procurement needs on federal, state, and institutional jobs with domestic content requirements.
9) Can I use the AMTSR250 as a tap connector and not just an in-line splice?
It is catalogued for electrical tap use as well as straight splicing. Because it accepts a range from 250 kcmil down to 6 AWG, you can land a large conductor on one side and a much smaller tap on the other, which is the common use for a reducing splice in a gutter or wireway.
10) Is the AMTSR250 sold individually or in a bag of multiples?
Pricing and packaging are per each, so one connector is one unit. Count the number of splices on the job and order that quantity, plus spares if the run is long.
How fast can I get the Blackburn AMTSR250 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 AMTSR250 come with a warranty?
Absolutely. The Blackburn AMTSR250 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 AMTSR250?
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selection,
installation tips, and troubleshooting. Contact Us
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