Can Square Box quote from CAD files?

Yes. STEP, STP, SLDPRT, SLDASM, DXF, DWG, PDF, ZIP, RAR and product photos can be uploaded with the RFQ form.

Do you claim product certifications?

No product certification claim should be made unless project-specific certificates exist. Use the compliance wording on this site until certificates and testing are confirmed.

Can you support low MOQ work?

Yes. The site is positioned for prototype-to-small-batch production and repeat OEM cabinet programs.

Can you arrange DDP delivery to the United States?

DDP delivery options can be quoted. Import duties and tariff treatment depend on HTS classification, country of origin, material and product configuration. Final tariff confirmation should be reviewed by the importer’s customs broker.

What is covered by the free remake policy?

If a sample does not match the approved drawing or confirmed specification due to our manufacturing issue, Square Box remakes it free. Design changes, incorrect customer drawings, new requirements after approval, customs delays and courier delays are not covered.

Critical power RFQs that move repetitive wiring prep upstream

Pre-Wired Terminal Box Assemblies

Name: Pre-Wired Terminal Box Assemblies
Brand: Square Box

Pre-wired terminal box assembly with DIN rail terminal blocks wire ducts and grounding hardware

Use this series when you want DIN rail layout, terminal block grouping, wire duct routing, grounding and low-voltage pre-wiring completed before shipment.

Move repetitive wiring prep out of the field

This series is designed to move DIN rail layout, terminal block mounting, wire duct routing, grounding preparation, labeling and low-voltage pre-wiring from the job site to a controlled factory process.

Square Box standardizes the enclosure platform, model naming, material choices and RFQ checklist so U.S. buyers can start from a clear series and still customize dimensions, cutouts, mounting details, finish and assembly scope.

Standard sizes

Suggested model starting points

Use these model numbers as RFQ starting points. Final drawing approval controls the manufactured configuration.

Standard model	Series	Size	Metric / reference	Quote notes
SB-PWT-1212-6	SB-PWT	12 × 12 × 6 in	305 × 305 × 152 mm	Final dimensions, cutouts, finish, hardware and assembly scope are confirmed from drawings.
SB-PWT-1614-8	SB-PWT	16 × 14 × 8 in	406 × 356 × 203 mm	Final dimensions, cutouts, finish, hardware and assembly scope are confirmed from drawings.
SB-PWT-2016-8	SB-PWT	20 × 16 × 8 in	508 × 406 × 203 mm	Final dimensions, cutouts, finish, hardware and assembly scope are confirmed from drawings.
SB-PWT-2420-10	SB-PWT	24 × 20 × 10 in	610 × 508 × 254 mm	Final dimensions, cutouts, finish, hardware and assembly scope are confirmed from drawings.
SB-PWT-3024-12	SB-PWT	30 × 24 × 12 in	762 × 610 × 305 mm	Final dimensions, cutouts, finish, hardware and assembly scope are confirmed from drawings.

Materials

Powder coated carbon steel, stainless steel by project. Material grade, thickness, finish face and corrosion expectations should be confirmed before quote release.

Construction

Welded or formed enclosure body
Removable gland plate or drilled entry pattern
Internal mounting plate
DIN rail and wire duct layout to drawing
Grounding studs and bonding hardware
Door gasket, hinge and lock options

Options

Terminal block layout
Wire duct routing
Wire labels and terminal markers
Grounding bar
Cable glands
Fans, filters or door switch when specified

Typical applications

Data center monitoring boxes
UPS / PDU auxiliary terminal boxes
Generator and ATS signal boxes
Grid equipment marshalling boxes
BESS low-voltage junction boxes

Image gallery

Views buyers usually need before RFQ approval

Closed pre-wired terminal box with powder-coated door hinge and lock — Closed terminal box

Open pre-wired terminal box with DIN rail terminal blocks wire ducts and labeled low-voltage wiring — Open terminal box assembly

Detailed terminal block assembly with wire markers grounding and warning symbols inside electrical enclosure — DIN rail terminal layout

Detailed wire labels terminal blocks and organized low-voltage wiring inside enclosure — Wiring and labeling support

Grounding stud and gland plate detail for a pre-wired terminal box — Grounding and gland plate detail

Packaged custom electrical enclosures in warehouse ready for shipment — Export packaging

Customer-approved BOM assembly

Typical BOM items and engineering notes

These items are installed only when they are shown in the drawing package, approved BOM or customer specification.

DIN rail

Cut to length and mounted according to drawing position, spacing, component layout and screwdriver clearance.

Terminal blocks

Installed by terminal schedule, grouped by inputs, outputs, power, PE/ground or customer-defined circuits.

Grounding bar

Mounted with bonding hardware, door bonding jumper and PE identification when specified.

Wire duct

Routed to separate signal, power and field I/O wiring where required by customer drawing.

Labels / wire markers

Applied according to customer label list; readable IDs can be supplied by customer or generated from terminal schedule.

Cable glands

Installed on gland plate or enclosure bottom according to cable entry layout.

Low-voltage wiring

Routed and ferruled according to customer-approved wiring diagram and BOM.

RFQ checklist

3D CAD and 2D PDF drawings
Selected standard model or target size
Material, thickness and finish target
Cutouts, gland plate, fan, louver, gasket, lock and hinge notes
Mounting plate, DIN rail, wire duct or BOM assembly scope
Quantity, prototype or batch intent
Inspection photo requirements
Shipping destination and delivery target

Compliance notes

Built for NEMA-style and IP-rated applications. Final rating depends on design, materials and testing requirements.

Square Box provides custom enclosure fabrication, component mounting and customer-BOM assembly support. Final electrical listing, field acceptance and project compliance depend on the complete design, selected components, testing and certification requirements.

No product certification, listing or country-of-origin claim should be assumed unless project-specific documentation exists.

Related procurement resources

Upload drawings for a free quote review

Email and drawing upload are enough to start. Add optional quantity, material, finish, BOM or terminal schedule details if available.

Upload Drawing for Free AI Quote