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.

Square Box industrial enclosure manufacturing

Grid Equipment Control Cabinets & Auxiliary Enclosures

Outdoor utility control cabinet with transformer equipment background

Outdoor control cabinets, monitoring boxes and pre-wired terminal assemblies for transformer, switchgear, substation and utility equipment OEMs.

Faster auxiliary enclosures for grid and utility equipment programs

Transformer, switchgear, substation and field equipment programs often need outdoor cabinets, marshalling boxes and terminal assemblies that match project drawings exactly. Square Box supports drawing-based fabrication, component mounting and low-voltage pre-wiring support for approved BOMs.

What we build

Outdoor control cabinets
Monitoring boxes
Pre-wired terminal assemblies
Marshalling cabinet enclosures
Accessory boxes for pad-mounted equipment
Replacement panels and repeat parts

Applications

Transformer auxiliary cabinets
Transformer monitoring boxes
Substation relay / protection cabinet enclosures
RTU / SCADA control cabinets
Metering and communication cabinets
Recloser control cabinet enclosures
Capacitor bank control boxes
Pad-mounted switchgear accessory boxes
Weatherproof marshalling cabinets

Pre-installed options

Mounting plates
DIN rails
Terminal blocks
Wire ducts
Grounding studs
Cable gland plates
Labels
Customer-approved hardware

Low-voltage pre-wiring support

Low-voltage pre-wiring support is available to customer drawings, terminal schedules and customer-approved BOMs. Square Box can support labels, wire duct routing, grounding points and component mounting when specifications are confirmed before production.

Component sourcing or installation support is based on customer-specified or customer-approved BOM items. Final listing, field acceptance and compliance depend on the complete project design and required testing.

Inspection photos before shipment

Inspection photos are provided for prototype orders before shipment and are available for batch production upon request.

Overall enclosure
Door and hinge details
Hole and cutout locations
Mounting plate
DIN rail and terminal block layout
Wire duct and labels
Grounding studs
Gasket and sealing structure
Surface finish
Key dimensions
Export packaging

RFQ checklist

3D CAD and 2D PDF drawings
Customer-approved BOM or preferred component list
Terminal schedule or low-voltage wiring notes
Quantity, prototype or batch intent
Material, thickness and finish
Indoor or outdoor environment
Inspection photo requirements
Shipping destination and delivery target

Compliance notes

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.

Built to customer drawings. Customer-approved BOM assembly, component-ready enclosure assemblies and U.S. warehouse support for approved repeat parts are available by project.

Upload drawings and BOM for a 24-hour quote response.

Include CAD files, terminal schedules, component list, quantity, finish and shipping destination for the fastest review.

Upload Drawing for 24h Quote