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Cable to Lug or Busbar, Heavy Duty

Heavy duty connections were originally developed to be used on reclaimed cable. The heavy duty connections use a larger size connection cavity in the mold and a larger size welding material than the equivalent standard duty connection.

The larger size welding material supplies extra BTU’s to melt the heavy oxide coating on the conductor and to overcome some severe field conditions. Heavy duty connections eliminate cutting the run conductor on certain types of connections, reduce cable cleaning requirements for old or reclaimed cable, and increase reliability under adverse field conditions.

Heavy duty connections are increasingly being specified for copper-coated steel conductor connections.


  • Forms a permanent, low resistance connection
  • Provides a molecular bond
  • ERICO CADWELD Exothermic Connections are rated with the same current capacity as the conductor
  • Portable installation equipment with no external source of power required
  • Installers can be easily trained to make ERICO CADWELD Exothermic Connections
  • Connections can be visually inspected
  • Mold Families LA and LE can be used with straight or offset lugs


HD Heavy Duty Designation
XX Mold Family
X Price Key
XX Lug/Busbar Size
XX Conductor Size
L* Split Crucible Crucible section is split on molds designed with horizontal opening for easier cleaning
M* Mold Only
W* Wear Plates Reduce mechanical abrasion of molds at cable entry points
* Empty if none


The search below may not contain all product options. For made-to-order configurations, consult the chart above.

Mold Family
Lug/Busbar Size
Conductor Size
Conductor Outer Diameter, Nominal

Mold Family

Part Number Mold Family Lug/Busbar Size Conductor Size Conductor Outer Diameter, Nominal Certifications
HDLAC2QEG LA 1/4" x 1 1/2" 4/0 Concentric 0.528" cULus
HDLAC2QEE LA 1/4" x 1" 4/0 Concentric 0.528" cULus
HDLAC3AEE LA 1/4" x 1" 300 kcmil Concentric 0.630"
HDLAC9FEE LA 1/4" x 1" 19/#9 Copperweld 0.572"
HDLAC9KDEW LA 3/16" x 1" 19/#5 Copperweld 0.910"
HDLAC9FDEW LA 3/16" x 1" 19/#9 Copperweld 0.572"
HDLAC9FGG LA 3/8" x 1 1/2" 19/#9 Copperweld 0.572"
HDLAC9FGGW LA 3/8" x 1 1/2" 19/#9 Copperweld 0.572"
HDLECY5FAM LE 5 mm x 50 mm 95 mm² Concentric 0.505" cULus
HDLJCFALY5 LJ 5 mm x 40 mm and wider 95 mm² Concentric 0.505"
HDLJCFAMY9 LJ 5 mm x 50 mm and wider 240 mm² Concentric 0.801"
For applications such as computer room, tunnel or other low-ventilation areas, specify a smokeless ERICO CADWELD EXOLON mold. Add an XL prefix to the standard mold part number when ordering (for example, a TAC2Q2Q becomes XLTAC2Q2Q). Similarly, ERICO CADWELD EXOLON welding material is also designated by the XL prefix (for example, 150 becomes XL150).
A gap between conductors may be required. See mold tag for more information.

Pentair, CADDY, CADWELD, CRITEC, ERICO, ERIFLEX, ERITECH and LENTON are owned by Pentair or its global affiliates. All other trademarks are the property of their respective owners. Pentair reserves the right to change specifications without prior notice.

UL, UR, cUL, cUR, cULus and cURus are registered certification marks of UL LLC.