3-in-1 Busbar Machine 303U-3-C
Ideal for small-to-medium switchgear factories, panel shops and maintenance workshops needing a complete busbar machine in limited space.
Quick Summary
The 303U-3-C is the most cost-effective entry point for a Thai switchgear or panel workshop that needs punching, shearing and bending in one machine: 300 kN covers 12 mm x 150 mm copper bar with Ø4.3-25 mm holes. It is a manual hydraulic unit on a single 4 kW motor, so it suits low-to-mid volume production and maintenance work where CNC programmes are not needed. At 1,720 x 1,220 x 1,220 mm and 1,220 kg on four casters it fits a narrow shop floor and can be wheeled between lines. Choose it when budget and floor space matter more than automated cycle time; move up to the 503U-3-C once bar thickness passes 12 mm.
Ideal for small-to-medium switchgear factories, panel shops and maintenance workshops needing a complete busbar machine in limited space.
- 3 working units, simultaneous or sequential operation
- Six-mode punching turnplate, fewer die changes
- Vertical blade cutting with smooth, waste-free edges
- Flat, vertical and U-bending via mold change
- Embossing, flattening, twisting and cable crimping
- 4 casters for easy movement
| Nominal force | 300 kN (30 tons) |
| Punching diameter | Ø4.3–25 mm |
| Max copper thickness | 12 mm |
| Max width | 150 mm |
| Max shearing | 12×150 mm |
| Max horizontal bending | 12×150 mm |
| Max vertical bending | 10×100 mm |
| Power | 1×4 kW |
| Machine size | 1,720×1,220×1,220 mm |
| Machine weight | 1,220 kg (4 casters) |
| Control | Manual hydraulic |
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, shearing and bending capacity at 300 kN
Test condition: copper bar 12 mm thick x 150 mm wide, punching Ø4.3-25 mm round, oblong and square holes on the six-mode turret at the rated 300 kN. Result: the 303U-3-C completes punching, shearing (12 x 150 mm) and flat bending (12 x 150 mm) in one setup on a single 4 kW motor. Baseline: the 503U-3-C raises this to 16 mm x 200 mm on 3 x 5.5 kW, so the 303U-3-C delivers 75% of that thickness and width capacity for roughly a quarter of the installed power.
Bending envelope at manual hydraulic control
Test condition: flat and vertical bending of 12 mm copper bar, U-bending by die change, positioning by hand and ruler. Result: 12 x 150 mm horizontal bending, 10 x 100 mm vertical bending, plus embossing, flattening, twisting and cable-lug crimping on the same frame. Baseline: CNC machines such as the LT-303U-3-C publish ±1° bending precision; the manual 303U-3-C publishes no angular tolerance, so it trades repeatability for purchase price.
Footprint and mobility in a small workshop
Test condition: installation on a normal factory floor with one 4 kW motor supply and no dedicated foundation. Result: 1,720 x 1,220 x 1,220 mm footprint, 1,220 kg including four casters. Baseline: the HQ600-SP punching and shearing line needs 10,500 x 2,750 x 1,800 mm and 6,700 kg, i.e. about 6.1x the length and 5.5x the weight of the 303U-3-C.
Which workshops fit the 303U-3-C?
Small-to-medium switchgear factories, panel shops and maintenance teams that need a complete busbar machine.
Can we change dies ourselves?
Yes. Standard dies are easy to swap. We supply spare parts and video tutorials.
What special processing is possible?
By changing molds you can also emboss, flatten, twist and crimp cable ends.
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