Cable-to-bar exothermic welding molds are purpose-built graphite molds for joining stranded copper cable to copper bars, busbars, or flat conductors with a permanent molecular bond.

Unlike mechanical clamps or bolted cable lugs, an exothermic cable-to-bar weld creates a low-resistance, corrosion-resistant connection that does not loosen under thermal cycling or fault current.

If you are sourcing exothermic welding molds Cable-to-Bar CB1, CB4, CB5, this category covers the standard connection styles.

1. CB Models
2. Applications
3. Select a model
4. Design & production intro (view videos page)
5. Request a quote or spec sheet

Cable-to-Bar Connections

This range focuses on commonly requested Cable-to-Bar mold codes:

• CB1 — compact cable-to-bar joints for lighter conductor sizes and smaller grounding bars
• CB4 — mid-range connections for standard copper cable and busbar sizes in substations and equipment bonding
• CB5 — heavier cable and larger bar sections where weld volume and mold cavity size must match higher-capacity conductors

Exact mold selection depends on cable cross-section, bar width/thickness, and joint type. Share your conductor dimensions and connection sketch, and we will confirm the correct CB mold, welding powder charge, and handle/frame accessories.

Watch a video : 3 benefits for you to use our molds.

Applications

CB cable-to-bar molds are widely specified for:

• Grounding cable terminations onto copper earthing bars
• Substation busbar and equipotential bonding connections
• Lightning protection down-conductor to bar joints
• Industrial plant and rail grounding where bolted cable lugs are not preferred

Because the finished weld is permanent, these molds are preferred on projects that prioritize long-term electrical continuity and reduced maintenance.

Choose

To choose among CB1, CB4, and CB5, confirm:

1. Conductor size — cable mm² (or AWG) and bar width × thickness
2. Joint orientation — straight tap, tee, or side entry cable-to-bar layout
3. Powder size — matched weld metal volume for a complete fill

Using the wrong cavity size is the most common cause of incomplete welds. If your cable or bar size sits between two codes, request a size chart before ordering.

You might also want to know

1. How we design and manufacture the molds ? > Watch video
2. How our exothermic welding powder works with the molds? > Watch video

Request a Quote or Spec Sheet

Send your conductor sizes, quantity, and destination port.

We can provide mold recommendations, powder pairing, and a formal quotation for contractors, distributors, and grounding system integrators.

Lucas
Product Manager & Marketing
EarthinGo Team