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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Group:
- Wire & Cable Management
- Product Type:
- Reducer Splice
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809, CSA 6591
- Type2:
- Electrical taps
- Voltage Rating:
- 600 V
- Department:
- Electrical
- Product Subgroup:
- Splices
- Product Color:
- Black
- Product Material:
- Aluminum
Blackburn AMTSR500 – Frequently Asked Questions
1) What wire range does the Blackburn AMTSR500 reducer splice cover?
The AMTSR500 is a reducer splice rated for 500 kcmil down to 4 AWG, which is what the 500-4 in the part number refers to. Because it is a reducer, the two ends take different conductor sizes, so it is the fitting to use when you are splicing a large feeder to a smaller conductor rather than joining two of the same size.
2) Can I use the Blackburn AMTSR500 on aluminum conductors, or copper only?
The body is aluminum, which is what makes it suitable for aluminum feeder conductors as well as copper in AL9CU style service. Aluminum bodied mechanical connectors are the standard choice on aluminum service and feeder cable where a copper-only crimp lug would not be listed for the job.
3) Is the AMTSR500 splice pre-insulated, or do I still have to tape and shrink it?
It comes with a PVC insulating cover on the body, so no separate taping or heat shrink is required over the connector itself in a 600 volt application. You still dress and insulate the conductor entrance the way your inspector expects.
4) Is the Blackburn AMTSR500 splice UL listed and CSA approved for an inspected job?
Yes. It carries UL file E9809 and CSA 6591, so it will pass on both sides of the border for inspected commercial and industrial work.
5) What size hex do I need to torque the Blackburn AMTSR500 splice?
Set screws on the AMTSR500 take a 5/16 inch hex key, so bring a 5/16 Allen or a hex bit driver to the pull. No crimp tool or die set is needed; this is a mechanical set screw splice.
6) What voltage class is this Blackburn aluminum splice good for?
600 volts. That covers normal building service, feeder, and branch work, panel and gutter splices, and motor feeder taps. It is not a medium voltage connector.
7) Is the Blackburn AMTSR500 made in the USA for a Buy American spec?
Country of origin on the AMTSR500 is the United States, which is the detail a government, school district, or federally funded project needs on the submittal.
8) What is the exact part number and manufacturer for this 500 kcmil to 4 AWG insulated reducer?
Blackburn AMTSR500. That is the number to quote when you are matching an existing installation or ordering a replacement for a splice already in a gutter or pull box.
9) Does the AMTSR500 come in a pack or is it sold as a single piece?
Sold each, one splice per unit, so order the exact count of splices your pull needs rather than working in carton multiples.
How fast can I get the Blackburn AMTSR500 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 AMTSR500 come with a warranty?
Absolutely. The Blackburn AMTSR500 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 AMTSR500?
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 AMTSR500 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.