CNC Busbar Processing Machine 503U-3-C
Ideal for medium-size switchgear and panel production lines that need higher output and consistent quality while saving floor space.
Quick Summary
Choose the 503U-3-C when a growing Thai panel builder has outgrown a manual 3-in-1 machine but does not yet need 800 kN: at 500 kN it punches Ø4.3-30 mm holes in copper bar up to 16 mm thick and 200 mm wide, and its PLC-controlled bending unit holds ±1° with ±0.5° repeatability. Saved programmes let operators repeat a busbar batch without re-setting gauges, which is what keeps quality consistent across shifts. It runs on 3 x 5.5 kW and weighs 1,700 kg, so it still fits a medium-size factory floor. Typical users are switchgear and panel lines moving from job-shop work into repeat production.
Ideal for medium-size switchgear and panel production lines that need higher output and consistent quality while saving floor space.
- 500 kN, handles bars up to 16 mm thick and 200 mm wide
- PLC-controlled bending with ±1° accuracy (repeat ±0.5°)
- Round and oblong hole punching
- 3 working units in one machine
- Reusable programs for consistent output
- Upgrade path from the 303U-3-C
| Nominal force | 500 kN (50 tons) |
| Punching diameter | Ø4.3–30 mm |
| Max copper thickness | 16 mm |
| Max width | 200 mm |
| Max vertical bending | 12×120 mm |
| Bending accuracy | ±1° (repeat ±0.5°) |
| Power | 3×5.5 kW |
| Machine weight | 1,700 kg |
| Control | CNC + PLC |
Reference Figures by Test Condition
Values below are the manufacturer's nominal figures for the stated condition. Each paragraph is written as condition + value + comparison baseline so it can be quoted on its own. Baseline machines are other models in the same LTMC catalogue; these are factory specification figures, not third-party laboratory reports.
Punching and processing envelope at 500 kN
Test condition: copper bar 16 mm thick x 200 mm wide, punching Ø4.3-30 mm round and oblong holes at the rated 500 kN. Result: the 503U-3-C punches, shears and bends that section in one machine under CNC + PLC control. Baseline: the 303U-3-C is rated 300 kN at 12 mm x 150 mm, so the 503U-3-C adds 67% more force, 33% more thickness and 33% more width.
Bending accuracy under PLC control
Test condition: PLC-controlled bending of copper bar with stored, reusable programmes instead of manual gauge setting. Result: ±1° bending accuracy with ±0.5° repeatability, and 12 x 120 mm vertical bending. Baseline: the manual 303U-3-C publishes no angular tolerance at all, so the 503U-3-C is the first step that gives a Thai factory a written, repeatable angle figure.
Installed power and machine weight
Test condition: continuous production on a standard industrial supply. Result: 3 x 5.5 kW (16.5 kW) installed power and a 1,700 kg machine. Baseline: the 803U-3-C delivers 800 kN on the same 3 x 5.5 kW but weighs 2,100 kg, so the 503U-3-C gives 63% of the flagship's force while saving 400 kg of machine weight.
Does a CNC machine require special skills?
CNC reduces required skill levels. Programs are stored and reusable, and free operator training is included.
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