Promax 16mm 1-Hole Aluminum Push Button Enclosure - Industrial Switch Control Box with Flanged Mounts

Specifications

• Material: Anodized Aluminum Alloy (Shell) / Heavy-Duty Plastic (End Caps)

• Hole Diameter: 16mm

• Hole Count: 1

• Overall Dimensions (L x W x H): Approx. 89.7mm x 47mm x 51mm (including mounting ears)

• Internal Profile: 31mm x 42mm

• Mounting Style: Surface Mount via Flanged End Caps

• Cable Entry: Waterproof Cable Gland included

Key Applications and Projects

• Emergency Stop Stations: Providing a highly visible, crush-proof housing for a 16mm mushroom-head E-stop switch on a 3D printer, laser engraver, or CNC router.

• Sim Racing Ignitions: Creating a rigid, standalone metal dashboard enclosure for an ignition toggle or heavy-duty starter button on a DIY racing simulator.

• Industrial Automation: Housing a heavy-duty 16mm cycle-start or machine reset button on an assembly line.

Unlock New Capabilities (Project Evolution)

• The Ultimate E-Stop Station: A runaway 3D printer or CNC router can cause serious damage or start a fire. Evolve your workshop safety by outfitting this 1-hole metal enclosure with a 16mm Latching Mushroom Emergency Stop Switch. Mount this rugged metal box right on the front frame of your machine enclosure. Wire the switch in series with the main AC power relay, and you now have a professional, instantaneous kill-switch you can physically smash with your palm in an emergency without breaking the box!

ACCESSORIES / PACKAGE INCLUDED

• 1 x Promax Aluminum Enclosure Shell (Pre-drilled for 1 x 16mm hole)

• 2 x Flanged Plastic End Caps ("Ear Holders")

• 1 x Waterproof Cable Gland

• 8 x Assembly Screws

FREQUENTLY ASKED QUESTIONS (FAQ)

1. What size button fits in this enclosure? The top plate is pre-drilled specifically for a single 16mm diameter push button, selector switch, or indicator light.

2. How many holes does this specific box have? This is the compact, 1-hole variant.

3. What material is the main shell made from? The main central body is made from a thickened, extruded aluminum alloy.

4. Are the end caps made of metal too? No, the dark grey end caps are constructed from rigid, heavy-duty industrial plastic to allow for secure screw threading and proper electrical isolation for the cable entry.

5. What are the overall dimensions of the box? Including the mounting flanges, it measures approximately 89.7mm long, 47mm wide, and 51mm tall.

6. Can I fit a standard 22mm button in this? No, the hole is strictly 16mm. A standard 22mm button or full-sized 22mm Emergency Stop will not fit without manually drilling out and enlarging the metal hole.

7. Does the enclosure come with the push button? No, this product is strictly the empty enclosure box and mounting hardware. Switches must be purchased separately to suit your specific project.

8. Is this switch box waterproof? It features a waterproof joint design for the cable entry, making it highly splash and dust resistant (when paired with a waterproof switch), but it is not intended to be fully submerged underwater.

9. What is the white plastic nut included in the kit? That is a waterproof cable gland (strain relief). It tightly secures the wire where it enters the box, preventing the wire from being yanked off the switch contacts and stopping moisture from getting inside.

10. How do I mount this box to a machine or wall? The plastic end caps feature integrated "ear holders" (flanges) with slotted holes, allowing you to easily bolt the box directly to a flat surface or aluminum extrusion rail.

11. Do I need to drill my own holes for the wires to enter? No, one of the plastic end caps features a pre-cut hole with a locking groove specifically sized to accept the included cable gland.

12. Can I drill additional holes in the aluminum if I need to? Yes, because the shell is an aluminum extrusion, you can drill or tap additional holes if your custom project requires mounting a side-facing switch or specialized connector.

13. Does the metal shell need to be grounded? Yes. As an absolute best practice for electrical safety—especially if you are switching high-voltage AC mains current (110V/220V)—the metal chassis should be tied to earth ground to prevent a shock hazard in case an internal wire frays and touches the shell.

14. How does the box assemble? The aluminum shell slides over the internal track of the plastic end caps, and the caps are then secured to the metal profile using the eight included Phillips-head machine screws.

15. Can an Arduino board fit inside this box? Yes, very small microcontrollers like an Arduino Nano, Micro, or a bare ESP8266 board can comfortably fit inside the 31mm x 42mm internal cavity alongside standard switch wiring.

16. Can I use this enclosure outdoors? Yes, the anodized aluminum body is rust-resistant. If you use a high-quality IP65-rated switch and ensure the cable gland is tightened properly, it will survive outdoor weather conditions.

17. What size wire fits through the included cable gland? The standard included PG-style gland typically accepts round multi-core cable diameters between 3mm and 6.5mm.

18. How long is the box without the mounting ears? The main aluminum body of the enclosure, without the extended mounting flanges, is approximately 66.5mm long.

19. Can I paint the aluminum body? Absolutely. While the silver anodized finish looks incredibly professional out of the box, you can lightly sand, prime, and paint the aluminum to perfectly match your machinery or racing simulator color scheme.

20. What does the "Promax" designation mean? Promax signifies this specific line of heavy-duty, industrial-grade metal control enclosures, differentiating them from standard, thin-walled hobbyist plastic project boxes.