Best Square Knockout Punch Tools for Electrical Panels
The best square knockout punch tool depends on the opening size, material, and hydraulic punch system you use. The Yescom and ZeHuoGe dies are 45 mm options for compatible hydraulic kits, while TEMCo’s dies cover common DIN panel-meter openings. The 45 mm TEMCo die offers broad stated compatibility with English and metric punch sets; its larger 92 mm square die suits larger meters. Compare the dimensions and draw-stud requirements before choosing, since a die that does not match your punch may not fit.
| Product | Opening Size | Best For |
|---|---|---|
| Yescom 45 mm square die | 45 × 45 mm | Specified Yescom hydraulic kits |
| TEMCo TH0305 | 45 × 45 mm | 1/16 DIN panel meters |
| TEMCo TH0306 | 92 × 46 mm | 1/8 DIN panel meters |
| TEMCo TH0307 | 92 × 92 mm | 1/4 DIN panel meters |
| ZeHuoGe 45 × 45 mm die | 45 × 45 mm | Specified 8-, 10-, or 15-ton kits |
Yescom 45 mm Square Knockout Die
This Yescom die is a 45 mm square option for making openings of approximately 1-3/4 by 1-3/4 inches. It includes two draw studs and is intended for use with hydraulic knockout punch equipment.
Best for: buyers who own one of the listed Yescom hydraulic punch sets, models YES0543 through YES0547. It is selected for its clearly stated dimensions, included draw studs, and compatibility information.
The product description lists punching capacity for materials up to 16-gauge stainless steel and 11-gauge iron, as well as steel, aluminum, brass, fiberglass, and plastics. Its construction is described as heat-treated 40Cr steel. Limitation: listed compatibility is specific to Yescom models; confirm your punch setup before buying.
TEMCo TH0305 45 mm DIN Punch Die
The TEMCo TH0305 cuts a 45 × 45 mm opening for a 1/16 DIN panel meter. The set includes draw studs and spacers for the listed English and metric punch-set specifications.
Best for: panel builders who need a 1/16 DIN opening and want a die described as fitting TEMCo Industrial, Greenlee, and other English punch sets with 3/4-16-inch threads, or import metric sets with 20 × 1.5 mm threads. It is selected for its stated cross-system fit options.
The listed required punching force is 12 US tons. Limitation: check both your punch’s thread specification and available force; the die’s fit claims do not mean every knockout tool is compatible.
TEMCo TH0306 92 × 46 mm Die
The TH0306 is a rectangular panel-meter punch die for a 92 × 46 mm opening, corresponding to a 1/8 DIN size. Although it is not square, it is relevant when selecting a knockout die for common panel cutouts.
Best for: buyers whose equipment calls for a 1/8 DIN rectangular opening. It is selected because the product description specifies both the cutout dimensions and compatibility with listed English and metric punch-set thread types.
Draw studs and spacers are included for the described specifications, and the stated required force is 12 US tons. Limitation: avoid this die if your panel requires a square opening; its 92 × 46 mm shape is rectangular.
TEMCo TH0307 92 mm Square Die
This TEMCo die makes a 92 × 92 mm square opening for a 1/4 DIN panel meter. It includes draw studs and spacers for the stated English and metric punch-set specifications.
Best for: buyers who need a larger square panel cutout rather than a 45 mm opening. It is selected for its defined 1/4 DIN dimensions and listed compatibility with TEMCo, Greenlee, and other punch sets using the specified thread standards.
The stated required punching force is 12 US tons. Limitation: its larger opening is not interchangeable with 45 × 45 mm or rectangular dies, so verify the panel-meter cutout dimensions before ordering.
ZeHuoGe 45 × 45 mm Hydraulic Die
This 45 × 45 mm square die includes two draw studs and is described for hydraulic punching in sheet materials. Listed materials include stainless steel up to 16 gauge, iron up to 11 gauge, steel, aluminum, brass, fiberglass, and plastics.
Best for: buyers with a compatible 8-, 10-, or 15-ton hydraulic knockout punch kit who need a 45 mm square hole. It is selected for its stated material range and heat-treated 40Cr steel construction.
Limitation: the listed compatibility is for the maker’s specified hydraulic punch kit range. Confirm the tool’s connection and capacity rather than assuming the die fits every hydraulic knockout set.
Buying Guide: How to Choose a Square Knockout Punch
What opening size do you need?
Start with the required cutout dimensions, not the die’s brand. A 45 × 45 mm die suits a smaller square opening, while the TEMCo TH0307 is sized for 92 × 92 mm. The TH0306 makes a 92 × 46 mm rectangle, so it is not a substitute for a square die. Check the panel or meter specification and allow for the exact dimensions it calls for.
Will the die fit your hydraulic punch?
Compare the draw-stud thread and punch-system compatibility before purchase. The TEMCo listings identify English 3/4-16-inch and metric 20 × 1.5 mm options, with studs and spacers included for those specifications. The Yescom and ZeHuoGe descriptions instead name particular hydraulic kit families. When the tool model is not listed, verify fit with the manufacturer.
What materials and force are involved?
Check the product’s stated material and thickness limits against the workpiece. The two 45 mm hydraulic dies list several materials and specific maximum gauges for stainless steel and iron. TEMCo’s DIN die descriptions state a required force of 12 US tons. Do not assume a die can cut a material or thickness that is not specified in its product information.
Is a complete punch set included?
These listings describe dies or die sets, not necessarily a complete hydraulic punch kit. Confirm whether your existing tool supplies the hydraulic driver and other required components. Included draw studs and spacers may cover particular thread standards, but they do not by themselves establish compatibility with every punch.
Frequently Asked Questions
What size is a 45 mm square knockout?
A 45 mm square opening measures 45 × 45 mm, or approximately 1-3/4 × 1-3/4 inches.
Can I use a square die with any hydraulic knockout punch?
No. Compatibility depends on the punch system, draw-stud thread, and required force. Check the die’s stated fit and your tool’s specifications.
Which option makes a 1/4 DIN opening?
The TEMCo TH0307 is listed for a 92 × 92 mm square 1/4 DIN opening.
Is the TEMCo TH0306 a square knockout die?
No. It makes a 92 × 46 mm rectangular opening for a 1/8 DIN panel meter.
Do these products include a hydraulic punch tool?
The listings describe punch dies and related studs or spacers. Confirm the package contents; do not assume a complete hydraulic punch tool is included.