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COMP STIRRUP W/CNTX 477-336ASCR 2/0
Manufacturer Resources
Product Specs
- Connection Type:
- Compression
- Country Of Origin:
- Mexico (MX)
- Insulation Material:
- None
- Product Group:
- Wire Connectors & Terminals
- Product Type:
- Compression Connector with Stirrup
- Selling Unit Of Measure:
- each
- Type2:
- Wire connectors
- Wire Size:
- 477(26/7) to 266CSR A500 to 336 STR AWG
- Department:
- Electrical
- Product Subgroup:
- Wire Connectors
- Product Size:
- 12-1/4 X 3-3/16 inches Tall
- Product Material:
- Aluminum with Tin Plated Copper Bails
Blackburn WRS819 – Frequently Asked Questions
1) What conductor sizes does the Blackburn WRS819 compression stirrup connector take?
The WRS819 is built for main conductors from 477 (26/7) through 266 CSR A500 to 336 STR AWG. The stirrup bail side is sized for a 2/0 tap connection. If your main run falls outside that 477 to 336 range, this is the wrong body and you need a different WRS number.
2) Is the WRS819 a bolted connector or does it need a crimp tool?
Compression only. The WRS819 body is installed with a hydraulic compression tool and the correct die for the conductor size, not bolted or set-screwed. Plan on a crimper on site, because once compressed it is a permanent connection.
3) Can I use an aluminum compression stirrup like the WRS819 on copper conductors?
The body is aluminum with tin plated copper bails, so the bail side is suited to copper hot-line clamp contact while the compression barrel is aluminum. Aluminum bodies are normally applied to aluminum or ACSR mains, which matches the 477 to 336 ACSR/AWG range it is rated for. For an all-copper main run, specify a copper-bodied stirrup instead.
4) Why would I install a stirrup connector instead of clamping a hot line clamp straight to the conductor?
The stirrup gives the hot-line clamp a dedicated tin plated copper bail to grab, so the clamp never bites the main conductor itself. That keeps repeated live-line taps and service drops from damaging the strands of the 477 through 336 main. It is the standard approach on overhead distribution where a tap is connected and disconnected more than once.
5) Is the Blackburn WRS819 insulated, or do I have to cover it after installation?
It ships bare, with no insulation on the connector. On energized overhead work that means any required covering, boot, or taping is a separate item you add in the field.
6) How much room do I need on the conductor for the WRS819 body?
Overall size is 12-1/4 x 3-3/16 inches, so allow better than a foot of clear conductor length for the barrel and bail assembly. Worth checking on congested spans or close to a dead-end where spacing to adjacent hardware is tight.
7) What is the exact part number and origin for the Blackburn compression stirrup with contact?
Blackburn WRS819 is the manufacturer part number, and there is no sub-variant to pick, it is a single configuration. Country of origin is Mexico.
How fast can I get the Blackburn WRS819 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 WRS819 come with a warranty?
Absolutely. The Blackburn WRS819 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 WRS819?
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installation tips, and troubleshooting. Contact Us
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