Outdoor Control Box Enclosures
SR MFG manufactures custom outdoor control box enclosures for electrical control systems, automation equipment, communication devices, power distribution units, and remote monitoring applications.
- IP65 to IP66 protection for outdoor environments
- Durable steel, stainless steel, or aluminum enclosure construction
- Custom sizes, cutouts, and internal layouts
- Flexible mounting options for wall, pole, or floor stand installation
- Built according to your drawings, samples, and performance requirements
Product Details
Product Specifications
| Specifications | Options or project details |
|---|---|
| Product Name | Outdoor control box enclosure |
| Manufacturing method | Custom sheet metal fabrication based on drawings, samples, or project requirements. |
| Main structure | Wall-mounted, pole-mounted, base-mounted, or cabinet-type housings |
| Material Options | Carbon steel, stainless steel, aluminum, or sheet metal specified for the project. |
| Plate thickness | Select based on structural and load requirements and project needs. |
| Door design | Hinged doors, screw-cap doors, removable doors, double doors, or doors with windows |
| Service Hardware | Quarter lock, key lock, handle lock or padlock device |
| Sealed design | Sealing contact surfaces, molded edges, and outdoor protective structures designed for this project. |
| Mounting bracket | Wall mount brackets, flanges, pole mount brackets, base brackets, or custom mounting hardware |
| Internal structure | Equipment mounting plate, DIN rail, bracket, grounding terminal and cable space |
| Cable entrance | Bottom, sides, back, or customer-specified cable entry area |
| Custom hollowed-out | Openings in human-machine interface panels, buttons, indicator lights, connectors, cable joints, vents, and wiring holes |
| Thermal management options | Blinds, fan openings, filter areas, rain covers, heater spaces, or air conditioning installation areas |
| Surface treatment | Powder coating, brushed stainless steel, passivation, custom colors or project-specified surface treatments |
| Grounding support | Grounding studs, grounding bars, or door grounding options |
| Enhancement Options | Reinforced doors, reinforced frames, support brackets, or reinforced bases. |
| Accessories Options | Internal support components, DIN rails, cable header plates, ventilation covers, and mounting brackets |
| File support | PDF, DXF, STEP, 2D drawings, 3D models, or client project files |
| Production mode | Prototyping, trial orders, small-batch production, mass production, or OEM manufacturing |
| Inspection Focus | Size, cuts, welding, coating, fitting, assembly and packaging |
| Quotation Requirements | Drawings, materials, surface treatment, structure, cuts, quantity, and application environment |
Detailed description
What is the outdoor control box enclosure?
Outdoor control enclosures are designed to protect electrical control components installed in exposed or semi-exposed environments. They are commonly used for terminal blocks, PLC modules, power supplies, communication equipment, sensors, and remote monitoring devices .
This product is primarily designed for customized B2B sheet metal enclosure projects . It is suitable for applications requiring specific project structures rather than standard off-the-shelf enclosures. Each enclosure can be custom-produced to meet the customer’s actual installation needs.
Common project applications include:
- Industrial automation control station
- Outdoor power supply and signal control box
- Solar equipment control cabinet
- Water treatment control panel
- Transportation control box
- Communication and remote monitoring cabinet
- Pump, motor and sensor control cabinet
Outdoor protection begins with the design of the building envelope.
Outdoor control cabinets require careful structural design. Areas most susceptible to impacting protective performance include door seams, cable entry areas, cut edges, welds, and mounting points. At SR MFG , these areas are carefully reviewed during both the design and manufacturing phases.
Common outdoor protective design solutions include:
- Molded door edges increase rigidity and help reduce the risk of water leakage.
- Sealing gaskets are affixed to the contact areas of the door and cover.
- Welded or reinforced corners to increase the strength of the outer casing.
- Protected cable entry area for cable joints, conduit fittings or connectors
- The raised installation structure reduces direct contact with damp surfaces.
- Choose between powder coating or corrosion-resistant surface treatment depending on the application environment.
Note: For projects exposed to rain, dust, splashing water, sunlight, or temperature changes, the enclosure structure should be confirmed together with the installation angle, door opening direction, cable entry position, and maintenance method.
Manufacturing around the control layout
A well-designed control box enclosure should harmonize with the internal equipment layout. It needs to provide sufficient space for components, facilitate safe and convenient cable routing, and allow for easy future maintenance.
SR MFG can customize outdoor control box enclosures according to customer design requirements . Their internal structure can accommodate controllers, power supplies, communication modules, and other electrical equipment.
Supported internal structure options include:
- Internal equipment mounting plate
- DIN rail mounting solutions
- Terminal support bracket
- Grounding studs and connection points
- Cable wiring space
- Strengthen the support area to support heavier components.
If you already have the electrical layout diagram , we can review the design and adjust the enclosure structure according to production requirements.
Custom sheet metal processing capabilities
Each outdoor control box enclosure can be manufactured using a complete custom sheet metal fabrication process. This production method supports prototyping, small-batch orders, and repetitive production .
| Process Stage | Manufacturing support |
|---|---|
| Cutting | Laser cutting or punching for panels and custom openings. |
| forming | CNC bending of chassis body, flange, forming edge and bracket |
| join in | Welding and hardware assembly of the outer shell structure |
| finishing | Grinding, deburring and edge treatment |
| Surface treatment | Powder coating , stainless steel surface treatment, or project-specific coating |
| Meeting | Locks, hinges, washers, brackets, and internal support components |
| examine | Dimensional inspection, assembly inspection, coating inspection, and final assembly inspection |
Installation and maintenance opening design
Outdoor installation conditions can vary considerably. The chassis can be mounted on a wall-mounted control point or used for remote equipment in the field. The chassis should be compatible with the field installation method and allow technicians easy and safe access to the internal components.
Available installation methods
| Installation direction | Typical Project Uses |
|---|---|
| Wall-mounted | Building walls, machine frame, and outdoor control panel |
| pole mounting | Solar energy systems, communication sites and remote monitoring points |
| Base installation | Large outdoor electrical equipment and control cabinets |
| Frame | Equipment integrated control system and airborne applications |
| Custom bracket design | Projects with special site conditions |
Wall-mounted outdoor control box enclosure installed on industrial building exterior wall for electrical control system protection
Floor-standing outdoor control box enclosure mounted on steel base frame in utility or industrial plant environment
The maintenance structure can be configured with hinged doors , screw covers, viewing windows, or removable panels. Locks can be selected based on security and maintenance requirements.
Custom openings for control interfaces and cable inlets
Outdoor control box enclosures typically require precise openings for field wiring and operating interfaces. These openings should be designed to balance sealing performance, ease of use, and manufacturing precision.
Custom enable options
- Human-computer interface screen and display window
- Buttons and indicator lights
- Cable connectors and conduit fittings
- Industrial connectors
- Antenna Interface
- Fan and filter area
- Labels and nameplates
Pre-fabricated cable entry cutouts and knockout holes on outdoor control box enclosure showing precision laser-cut openings for cable glands and connectors
All opening details should be confirmed before production. For outdoor applications, the selected cable joints , connectors, and fittings should meet the project’s sealing requirements.
Thermal management and outdoor accessories
Electrical components inside a sealed enclosure may generate heat. Some outdoor locations also require protection against low temperatures, direct sunlight, or condensation.
Thermal management options
| Option | Purpose |
|---|---|
| Louvers | Support natural ventilation in suitable applications |
| Fan Openings | Reserve space for active ventilation |
| Filter Areas | Help reduce dust entry during ventilation |
| Rain Hoods | Protect ventilation areas and reduce direct rain entry |
| Heater Space | Support low-temperature applications |
| Air Conditioner Mounting Area | Suitable for projects with higher heat generation |
These options are project-based configurations and should be selected according to the actual equipment and site conditions.
Material and Surface Finish Options
Material selection affects corrosion resistance, structural strength, weight, and cost. The right choice depends on where the outdoor electrical enclosure will be installed and how it will be maintained.
| Material | Corrosion Resistance | Weight | Relative Strength | Typical Application Environment |
|---|---|---|---|---|
| Carbon Steel with Powder Coating | Medium, depending on coating integrity | Heavy | High | General outdoor industrial use, sheltered or semi-exposed locations, and cost-sensitive projects |
| 304 Stainless Steel | Good resistance to atmospheric corrosion and moisture | Heavy | High | Humid areas, suburban environments, light industrial sites, food-related areas, and washdown zones |
| 316 Stainless Steel | Excellent resistance to salt spray, chemicals, and marine atmosphere | Heavy | High | Coastal areas, marine sites, chemical plants, and high-salinity environments |
| Aluminum Alloy | Good corrosion resistance from its natural oxide layer | Light | Medium | Mobile installations, rooftop systems, weight-sensitive structures, and general outdoor use |
| Galvanized Steel | Good protection through the zinc coating | Heavy | High | Moderate outdoor exposure, utility projects, infrastructure sites, and roadside installations |
Surface treatment can be selected based on appearance, corrosion resistance, and brand consistency. Common options include powder coating, brushed stainless steel, passivation, and custom color finishing.
If your enclosure is exposed to salt air or chemical fumes, 316 stainless steel provides the longest service life with minimal maintenance. For general outdoor industrial use where weight is not a major concern, carbon steel with high-quality powder coating offers strong cost performance. When mounting load is limited, such as on poles, rooftops, or mobile platforms, aluminum alloy is a practical choice. Galvanized steel provides a good balance between corrosion resistance and structural strength for utility and infrastructure projects.
Powder-coated surface finish close-up on outdoor control box enclosure showing uniform coating thickness and corrosion-resistant quality
Application Scenarios
For each application, we adjust the material grade, surface treatment, and sealing configuration to match the actual exposure conditions. For example, a coastal solar project may require 316 stainless steel with marine-grade powder coating. A highway traffic control cabinet may use galvanized steel with a high-build polyester coating to resist UV exposure and road salt.
Common applications include:
- Traffic signal control systems
- Telecom base stations and 5G equipment enclosures
- PV inverter and wind power control units
- Water treatment plants and pump station control cabinets
- Industrial automation and PLC control enclosures
- Oil and gas field monitoring and control units
- Security and surveillance system enclosures
- Smart city infrastructure and IoT gateway enclosures
Outdoor control box enclosure deployed in real outdoor environment at solar farm site showing weatherproof steel housing in field conditions
Custom Parameter Range
We manufacture custom outdoor enclosures according to your exact specifications. The following customization options are available for every order.
| Custom Parameter | Available Range |
|---|---|
| Overall Size, W x H x D | Manufactured according to drawings. Please contact us for specific size limits |
| Sheet Metal Thickness | 1.0 mm to 3.0 mm |
| Opening Shape and Position | Any shape and position, processed by laser cutting or CNC punching |
| Opening Tolerance | Standard laser cutting can be evaluated at ±0.1 mm. Hole size, hole position, and assembly tolerance should be confirmed according to the drawing, material, sheet thickness, and process |
| Surface Treatment | Powder coating with custom RAL colors, hot-dip galvanizing, anodizing, passivation, or brushing |
| Silk Screen Printing | Logo, labels, legends, and wiring diagrams printed directly on the door or side panels |
| Laser Marking | Permanent serial numbers, QR codes, or compliance markings |
| Internal Layout | Custom mounting plate position, DIN rail position, and cable routing path |
| Door and Lock Configuration | Single door or double door, hinge position, lock type and position, and handle direction |
| Cable Entry Layout | Pre-punched holes, knockouts, or cable gland plates positioned according to your wiring drawing |
Dimensioned drawing of outdoor control box enclosure showing width height depth dimensions mounting hole positions and cable entry locations
Accessories and Matching Products
The following accessories can be ordered together with the enclosure or purchased separately.
Internal Mounting
- Adjustable mounting plates, available in galvanized steel or stainless steel
- 35 mm DIN rails, available in multiple lengths and pre-cut to your specifications
- Wiring ducts and cable channels in multiple widths
Cable Management
- Cable glands with metric and PG threads, IP68 rating, and multiple sizes
- Sealing plugs for unused knockouts
- Tool-free membrane cable entry plates
Electrical Safety
- Pre-drilled grounding copper bars
- Grounding bolts and equipotential bonding straps
- Door-to-body grounding jumpers, available pre-installed
Thermal Management
- Filter fans with dust filters
- Thermostat-controlled fan assemblies
- Louvered ventilation plates with insect screens
- Heat exchangers for sealed enclosures in high-temperature environments
Security and Door Control
- Lock upgrades, including keyed-alike locks, keyed-different locks, and master key systems
- Door interlock switches
- Padlock hasps
Mounting Accessories
- Wall-mount bracket kits
- Pole clamp assemblies
- Floor-standing base frames with adjustable feet
- Sun shields and extended rain covers
Exploded assembly view of outdoor control box enclosure showing door panel housing body sealing gasket mounting plate hinges locks and internal accessories as separate components
