Copper Mechanical Lug · 4/0 AWG to 500 kcmil · 1-Hole Offset Tongue · Techspan SLU400
What this product is for
This copper mechanical lug is used to terminate one copper conductor onto a pad, bar, or equipment connection point using a set-screw style mechanical connection. It suits electricians and panel builders who need a field-installable lug for larger copper conductors in switchgear, distribution equipment, and control assemblies.
Use for
Use for terminating one copper conductor in the 4/0 AWG to 500 kcmil range to a single mounting point. Typical applications include panelboards, switchboards, equipment pads, bus bars, and other power distribution terminations where a 1-hole offset tongue lug is specified.
Avoid for
Avoid using this lug where a compression lug is specified, where aluminium conductors are being terminated, or where the equipment requires a different stud size, hole pattern, or conductor class. Do not assume suitability for fine-stranded cable unless the manufacturer or equipment documentation confirms compatibility.
Best for
Best for service and distribution work where installers want a mechanical lug that accepts a wide conductor range and can be installed without compression tooling. The offset tongue design is useful where pad access or conductor routing benefits from extra clearance.
Installed in
Commonly installed in electrical rooms, service equipment, distribution sections, OEM panels, and retrofit assemblies. Typical mounting uses a 3/8 in stud or bolt opening, approximately 0.41 in (10.4 mm), subject to the exact product version and listing.
Why this product exists
This lug provides a practical way to land large copper conductors without crimp tooling, while still offering a secure mechanical termination. The concave pressure bar and V-bottom collar style commonly used in this family helps centre the conductor and improve contact pressure during tightening.
Compared with similar products
Compared with compression lugs, this mechanical lug is typically faster to install and easier to service in the field, but it must match the conductor range, strand type, and equipment termination requirements. Compared with 2-hole lugs, a 1-hole lug takes less mounting space but offers less resistance to rotation. As typical trade guidance, mechanical lugs are commonly chosen where maintenance access matters; actual performance depends on installation conditions, torque, conductor type, and local electrical code.
Specifications
- Product type: Copper mechanical lug
- Conductor range: 4/0 AWG to 500 kcmil copper
- Number of conductors: 1
- Mounting: 1-hole offset tongue
- Stud / hole size: 3/8 in stud, approximately 0.41 in hole diameter (about 10.4 mm)
- Material: Copper
- Set screw / screw type: Hex socket / hex screw style
- Typical feature: Concave pressure bar with V-bottom collar
- Approvals reported by sources: UL / cULus, CSA, RoHS depending on listing source
- Approximate dimensions reported by sources: 4.25 to 5.25 in long (108 to 133 mm), 1.50 in wide (38 mm)
- Application note: Confirm exact dimensions and certifications against the current manufacturer sheet before use on specified equipment
Minimum Order $20
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(Contractor Accounts)
Standard Shipping-Free on orders over $249 in Metropolitan Areas / $499 in Rural Areas
(All Other Accounts)
Standard Shipping-Free on orders over $499
Minimum Order Is $20
Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
- PVC and EMT Pipe
- Wire and Cable
- Items over 48 inches in length
Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.
Shipping Options:
- A courier can deliver to your home, office, or your job site
- Pick up at local depot near you (applies to the following locations)
Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB
Burnaby Warehouse 5608 Goring St Burnaby, V5B 3A3, BC
Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.
THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS
- We cannot deliver to P.O. boxes.
- A signature may be required for shipments over $500.
- No weekend delivery.
- Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.
Standard Shipping cost on orders less than $499
Total shipping cost = "Per Shipment" cost + "Per Item" cost. The "per item" cost is listed in terms of price per pound.
Product Group | Per Shipment* | Per Item |
|---|---|---|
Boxes | $6.99 | $1.49/lb |
Conduit & Raceway | $149.99 | $2.49/lb |
Connectors & Fittings | $5.99 | $1.19/lb |
Data & Structured Home | $5.99 | $1.19/lb |
Distribution Equipment | $5.99 | $1.19/lb |
Emergency Lighting | $6.99 | $1.49/lb |
Heating & Ventilation | $6.99 | $1.49/lb |
Lighting Controls | $5.99 | $1.19/lb |
Lighting Indoor | $6.99 | $1.49/lb |
Lighting Outdoor | $6.99 | $1.49/lb |
Tools | $4.99 | $.99/lb |
Wire & Cable | $49.99 | $2.29/lb |
Wiring Devices | $5.99 | $1.19/lb |
Any combination of the above items | Highest applicable per-shipment charge | As above |
Effective Date: August, 15, 1998
At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:
Returns
Defective Items:
- If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
- To initiate a return, please contact our customer service team with your order number and a description of the defect.
Non-Defective Items:
- We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.
Return Process
Authorization:
- Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
- Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.
Shipping:
- Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.
Condition:
- Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.
Refunds
- Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
- Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.