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Burndy YS31 Hylink Copper Compression Splice, Long Barrel, 350 kcmil
The Burndy YS31 Hylink copper compression splice joins 350 kcmil copper conductors in heavy-duty, higher-voltage systems. It has an internal chamfer, a tin-plated finish, a 90°C rating, and is rated to 35kV with UL and CSA recognition to UL468A-468B. The RED color code and 18 or 324 die index speed die selection.
Key Features
- Conductor Size: Sized for 350 kcmil copper (Cu) conductors.
- Durable Construction: Copper barrel with a tin-plated, electro-plated finish for corrosion resistance.
- Long Barrel, Chamfered Design: Long-barrel splice with an internal chamfer that eases conductor insertion.
- Compression Termination: Compression-style splice for a secure mechanical and electrical connection.
- High-Voltage Rating: 600V minimum up to 35kV maximum, 90°C operating temperature.
- RED Color Code: Color-coded RED with an 18 or 324 die index for fast die selection.
- Dimensions: 4.35 in (110 mm) overall length, 1.95 in B length, 2-1/16 in strip length.
Certifications & Compliance
- UL Listed
- CSA Approved
- Meets UL468A-468B Industry Standards
Technical Specifications
- Product Material: Copper
- Termination Method: Compression
- Series: Hylink
- Feature - Barrel Style: Chamfered
- Voltage - Maximum: 35000
- Trade Name: HYLINK™
- Rating - KVA: 35 kV
- Dimension - Length Overall inch: 4.35 in
- Rating - Minimum Voltage: 600
- Certification - cULus: No
- Certification - ETL: No
- Standards - Industry Standards Met: UL468A-468B
- Plating Type: Tin - Electro Plated
- Standards - RoHS Compliance Status: CM
- Plated: Y
- Color Code: Red
- Application: For Heavy Duty Applications And Used At Higher Voltages Up To 35 KV
- Certification - CSA Approved: Yes
- Certification - UL Recognized: No
- Sub Brand: HYLINK
- Product Details: YS, Long Barrel
- Minimum Pack Quantity: 1
- UPC: 781810508251
- Conductor - Copper Str Navy Size: 350 (91) Navy
- Industry Standard(s): UL468A-468B
- UL Listed: Yes
- Dimension - Strip Length inch: 2-1/16
- Dimension - B Length inch: 1.95 in
- Dimension - L Length Overall mm: 110 mm
- UPC 12 Digit: 7818105082511
Typical Applications
- Heavy-Duty Industrial and Utility Power Distribution
- Higher-Voltage Circuits Up To 35kV
- Underground and Overhead Copper Conductor Splicing
- Utility Substation and Feeder Cable Connections
Why Burndy?
Burndy's Hylink YS31 pairs a tin-plated copper barrel and internal chamfer with RED die-index coding for a consistent connection, backed by UL and CSA recognition to UL468A-468B.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- BURNDY-20260915
- Wire Size:
- 350 KCMIL
- Plating:
- Tin Plated
- Termination Method:
- Compression
- Series:
- Hylink
- Feature - Barrel Style:
- Chamfered
- Conductor - Copper Str Size:
- 350 kcmil
- Voltage - Maximum:
- 35000
- Trade Name:
- HYLINK™
- Rating - KVA:
- 35 kV
- Dimension - Length Overall inch:
- 4.35 in
- Rating - Minimum Voltage:
- 600
- Certification - cULus:
- No
- Certification - ETL:
- No
- Connector Type:
- LONG BARREL
- Standards - Industry Standards Met:
- UL468A-468B
- Plating Type:
- Tin - Electro Plated
- Standards - RoHS Compliance Status:
- CM
- Plated:
- Y
- Color Code:
- Red
- Certification - CSA Approved:
- Yes
- Certification - UL Recognized:
- No
- Sub Brand:
- HYLINK
- Product Details:
- YS, Long Barrel
- Minimum Pack Quantity:
- 1
- UPC:
- 781810508251
- Feature - Barrel Type:
- Long
- Conductor - Copper Str Navy Size:
- 350 (91) Navy
- Industry Standard(s):
- UL468A-468B
- UL Listed:
- Yes
- Dimension - Strip Length inch:
- 2-1/16
- Dimension - B Length inch:
- 1.95 in
- Dimension - L Length Overall mm:
- 110 mm
- UPC 12 Digit:
- 7818105082511
- Product Type:
- Compression Splice
- Product Material:
- Copper
- Department:
- Electrical
- Product Group:
- Wire Connectors & Terminals
- Product Subgroup:
- Splice Kits
Burndy YS31 – Frequently Asked Questions
1) What conductor size does the Burndy YS31 splice take?
The YS31 Hylink splice is sized for 350 kcmil stranded copper conductors, and it is listed for 350 (91) Navy stranding as well. It is a copper-to-copper splice only, so aluminum conductors need a different connector.
2) How much insulation do I strip back on each conductor for a YS31 splice?
Strip 2-1/16 inches off each conductor end. The barrel is 4.35 inches (110 mm) overall with a 1.95 inch B length, so each end goes in roughly half the barrel and the strip length lands the conductor at the internal stop.
3) Which die do I use to crimp the Burndy YS31?
The YS31 is color coded RED, with die index 18 or 324. Match the RED code or that index number on your compression tool set; it is a compression splice, not a mechanical set screw connector, so it has to be crimped with the correct die to make the rated connection.
4) Can I use the Burndy YS31 on a 15kV or 35kV medium voltage cable splice?
Yes. The Hylink YS31 is rated 600V minimum up to 35kV maximum, which covers 15kV and 25kV class work as well, at a 90 degree C conductor operating temperature. It is intended for heavy duty industrial and utility distribution.
5) Is the Burndy YS31 UL listed for use on a job that requires listed connectors?
Yes. The YS31 is UL Listed and CSA Approved, and meets UL468A-468B. Note it is not carried as cULus or ETL marked, so if your spec calls out one of those specific marks, confirm the mark named on the drawing.
6) Is a 3M Scotchcast 82-A3N inline resin splice kit a substitute for the Burndy YS31 splice?
They do different jobs. The Burndy YS31 is a compression splice: a tin-plated copper long barrel that is crimped onto 350 kcmil copper conductors to make the metal-to-metal joint itself, rated 600V minimum up to 35 kV. The 3M 7100117646 Scotchcast 82-A3N is an inline resin splice kit rated 1-5 kV and non-shielded, which is the insulating and re-jacketing system poured over a joint. If the circuit is above 5 kV, the 82-A3N voltage class does not cover it. On a lower-voltage cable the two are commonly used together rather than one in place of the other, with the barrel crimped first and the kit rebuilding the insulation.
7) For a 15 kV or 35 kV copper feeder splice, which of these two products carries the voltage rating?
The Burndy YS31 Hylink splice carries a 600V minimum to 35 kV maximum rating and is UL Listed and CSA Approved to UL468A-468B, so it covers 15 kV and 35 kV copper feeder work at 350 kcmil. The 3M 7100117646 Scotchcast 82-A3N kit is specified at 1-5 kV and non-shielded, which places it in a lower voltage class for that application.
8) Why choose a long barrel splice over a standard barrel one?
The long barrel on the YS31 gives more crimp length and more contact area per conductor, which is why it is specified for heavy duty and higher voltage runs up to 35kV. A short barrel connector takes fewer crimps and is generally used on lower voltage building wiring. The YS31 also has an internal chamfer so the conductor feeds in without birdcaging the strands.
9) Is the YS31 splice suitable for a wet or underground copper cable splice?
The barrel is copper with a tin electro-plated finish for corrosion resistance, and typical uses include underground and overhead copper conductor splicing. For a direct buried joint you still need the appropriate insulating or resin system over it; the YS31 is the conductor connection only.
10) What else do I need besides the YS31 to finish a splice?
You need a compression tool with the RED / 18 / 324 die, and an insulation system over the finished joint. For lower voltage work ZenSupply carries the 3M Scotchcast 82-A3N inline resin splice kit, rated 1-5 kV non-shielded and sold 10 per case, which is a different approach: a full kit rather than a bare connector. For 35kV class work the YS31 is the connector and the insulation is specified separately.
11) Do I need a crimp tool and dies for the Burndy YS31, or can I use a poured kit instead?
The YS31 is a compression termination and requires a crimp tool with the correct dies; it is color coded Red with an 18 or 324 die index, takes a 2-1/16 inch strip length, and measures 4.35 in (110 mm) overall. A poured product such as the 3M 7100117646 Scotchcast 82-A3N inline resin kit is not a crimp connector and does not replace the die-crimped barrel on a 350 kcmil copper conductor joint.
12) Can I order a single Burndy YS31 or does it come in a carton?
Minimum pack quantity on the YS31 is 1, so you can buy one piece rather than a full box.
13) I need one splice, not a case. How do the ordering quantities compare?
The Burndy YS31 is sold with a minimum pack quantity of 1, so a single splice can be ordered for one joint. The 3M 7100117646 Scotchcast 82-A3N is packaged 10 per case, which suits crews stocking multiple resin splices at once.
How fast can I get the Burndy YS31 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 Burndy YS31 come with a warranty?
Absolutely. The Burndy YS31 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 Burndy YS31?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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installation tips, and troubleshooting. Contact Us
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