SUS304 Stainless Steel Distribution Box | Outdoor Weatherproof Enclosure

SUS304 Stainless Steel Distribution Box | Outdoor Weatherproof Enclosure

The SUS304 stainless steel rainproof distribution box is a heavy-duty outdoor electrical enclosure purpose-built for exterior power distribution applications. Fabricated from authentic SUS304 stainless steel with a sloped rainproof roof design, it delivers reliable dustproof, waterproof and corrosion-resistant performance for long-term outdoor service. Available in a full range of standard sizes with full customization support, this wall-mounted enclosure is an ideal solution for outdoor circuit protection, solar PV systems, security monitoring and industrial power distribution projects.

The SUS304 stainless steel rainproof distribution box is a heavy-duty outdoor electrical enclosure purpose-built for exterior power distribution applications. Fabricated from authentic SUS304 stainless steel with a sloped rainproof roof design, it delivers reliable dustproof, waterproof and corrosion-resistant performance for long-term outdoor service. Available in a full range of standard sizes with full customization support, this wall-mounted enclosure is an ideal solution for outdoor circuit protection, solar PV systems, security monitoring and industrial power distribution projects.

Product Overview

The SUS304 series outdoor distribution box is a professional weatherproof electrical enclosure manufactured from genuine 304 stainless steel, designed for reliable operation in harsh outdoor environments. Featuring a scientific sloped roof structure and precision-sealed door panel, it achieves IP65 level ingress protection, effectively blocking rain, dust and corrosive moisture from entering the cabinet.
With more than 15 standard size options in stock and full custom fabrication capability, this wall-mounted distribution box is widely used for outdoor low-voltage power distribution, solar PV combiner systems, street light control, security monitoring and municipal engineering projects. Its premium 304 stainless steel construction ensures excellent rust and corrosion resistance, making it especially suitable for coastal, humid and heavily polluted industrial areas.

Key Features

  • Genuine SUS304 Stainless Steel: High-grade 304 stainless steel housing with superior rust and corrosion resistance, far more durable than cold-rolled steel or 201 stainless steel in outdoor environments
  • Sloped Rainproof Roof Design: Extended eaves and angled top structure effectively drain rainwater, prevent water accumulation and intrusion
  • IP65 Ingress Protection: Fully dust-tight and resistant to low-pressure water jets from all directions, suitable for long-term outdoor installation
  • Standard Sizes: Rich stock dimensions to match different component capacity and wiring space requirements, fast delivery available
  • Secure Stainless Steel Lock: Anti-theft locking mechanism prevents unauthorized access and protects internal electrical components
  • Wall Mount Structure: Pre-reserved mounting holes for quick and stable wall installation, space-saving layout
  • Precision CNC Fabrication: Integrated bending process with seamless joints, smooth brushed surface finish, easy to clean and maintain
  • Full Customization Support: Custom dimensions, cable entry openings, internal component assembly and logo printing available

Technical Specifications

ParameterSpecification
Enclosure MaterialAuthentic SUS304 Stainless Steel
Protection DegreeIP65
Installation MethodWall-mounted (pole-mount bracket optional)
Rated Operational VoltageAC 220V / 380V, 50/60Hz
Surface FinishBrushed stainless steel
Lock TypeStainless steel security lock
Plate ThicknessStandard 1.0-1.5mm (customizable)
Corrosion Resistance GradeExcellent, suitable for coastal & humid areas
Applicable StandardIEC 60439-1
CustomizationFull custom size & internal configuration supported

Standard Size Options (Width × Height × Depth, mm)

  • 250 × 300 × 150
  • 300 × 400 × 200
  • 300 × 400 × 250
  • 400 × 300 × 200
  • 400 × 500 × 200
  • 400 × 500 × 250
  • 400 × 500 × 300
  • 500 × 400 × 200
  • 500 × 400 × 250
  • 500 × 600 × 200
  • 500 × 600 × 250
  • 500 × 600 × 300
  • 500 × 700 × 300
  • 600 × 500 × 250
  • 600 × 800 × 200
  • 600 × 800 × 300
  • 800 × 600 × 200
  • 1000 × 800 × 300

Application Scenarios

  • Outdoor low-voltage power distribution for industrial parks, residential communities and commercial buildings
  • Solar photovoltaic (PV) array combiner boxes and outdoor PV distribution systems
  • Street lighting control cabinets and security monitoring power boxes
  • Municipal engineering outdoor electrical equipment enclosures
  • Outdoor power distribution for charging stations and new energy facilities
  • Coastal and high-humidity area outdoor electrical installations
  • Factory outdoor equipment control boxes and power distribution units

Structural & Material Advantages

  1. Premium Material Guarantee

    Adopts authentic SUS304 grade stainless steel, with stable chemical properties and excellent corrosion resistance. It maintains good condition even in long-term outdoor exposure, acid rain and humid coastal environments, with a service life several times that of ordinary carbon steel enclosures.

  2. Scientific Waterproof Structure

    The integrated sloped top with extended overhanging eaves avoids rainwater accumulation on the cabinet top. The door panel is designed with a multi-layer bending stop edge, fitted with a sealed rubber strip, which effectively blocks rainwater intrusion and ensures reliable IP65 waterproof performance.

  3. High-strength Process

    Formed by CNC precision bending at one time, with no welding traces on the surface and smooth edges. The thickened plate and reinforced frame design improve the overall structural strength, resisting external impact and deformation.

  4. Humanized Detail Design

    Built-in standard mounting holes for quick wall fixation; stainless steel hinges for smooth and durable door opening and closing; reserved grounding terminals inside to ensure electrical safety; the brushed surface is easy to clean and maintains a neat appearance for a long time.

Customization Service

We provide one-stop customized solutions to meet diverse project requirements:
  • Custom enclosure dimensions and stainless steel plate thickness
  • Custom positions and sizes of cable inlet/outlet holes, with matching waterproof cable glands
  • Internal configuration assembly: DIN mounting rails, terminal blocks, circuit breakers, surge protective devices, etc.
  • Optional pole-mounting brackets for outdoor pole installation scenarios
  • Custom laser engraved brand logo and product label
  • Special surface treatment for highly corrosive industrial environments

Quality Assurance

  • All products adopt genuine SUS304 stainless steel, with material traceability and quality certification
  • Precision CNC manufacturing ensures dimensional accuracy and consistent assembly quality
  • 100% waterproof performance test and appearance inspection before delivery
  • Production and management strictly follow ISO 9001 quality system standards
  • Damage compensation policy for transportation: any damaged product during delivery will be replaced free of charge

Installation & Maintenance Tips

  1. Select a flat and stable installation position, fix the enclosure horizontally on the wall or mounting bracket to avoid tilting.
  2. After completing internal wiring, seal all cable entry holes with waterproof cable glands to maintain the overall IP65 protection performance.
  3. Regularly clean dust and debris on the enclosure surface and inside to ensure good heat dissipation and smooth operation of internal components.
  4. Periodically check the sealing rubber strip and door lock to maintain good waterproof and anti-theft performance.
  5. Avoid violent impact on the enclosure during installation and daily use to prevent structural deformation and seal failure.

Product Overview

The SUS304 series outdoor distribution box is a professional weatherproof electrical enclosure manufactured from genuine 304 stainless steel, designed for reliable operation in harsh outdoor environments. Featuring a scientific sloped roof structure and precision-sealed door panel, it achieves IP65 level ingress protection, effectively blocking rain, dust and corrosive moisture from entering the cabinet.
With more than 15 standard size options in stock and full custom fabrication capability, this wall-mounted distribution box is widely used for outdoor low-voltage power distribution, solar PV combiner systems, street light control, security monitoring and municipal engineering projects. Its premium 304 stainless steel construction ensures excellent rust and corrosion resistance, making it especially suitable for coastal, humid and heavily polluted industrial areas.

Key Features

  • Genuine SUS304 Stainless Steel: High-grade 304 stainless steel housing with superior rust and corrosion resistance, far more durable than cold-rolled steel or 201 stainless steel in outdoor environments
  • Sloped Rainproof Roof Design: Extended eaves and angled top structure effectively drain rainwater, prevent water accumulation and intrusion
  • IP65 Ingress Protection: Fully dust-tight and resistant to low-pressure water jets from all directions, suitable for long-term outdoor installation
  • Standard Sizes: Rich stock dimensions to match different component capacity and wiring space requirements, fast delivery available
  • Secure Stainless Steel Lock: Anti-theft locking mechanism prevents unauthorized access and protects internal electrical components
  • Wall Mount Structure: Pre-reserved mounting holes for quick and stable wall installation, space-saving layout
  • Precision CNC Fabrication: Integrated bending process with seamless joints, smooth brushed surface finish, easy to clean and maintain
  • Full Customization Support: Custom dimensions, cable entry openings, internal component assembly and logo printing available

Technical Specifications

ParameterSpecification
Enclosure MaterialAuthentic SUS304 Stainless Steel
Protection DegreeIP65
Installation MethodWall-mounted (pole-mount bracket optional)
Rated Operational VoltageAC 220V / 380V, 50/60Hz
Surface FinishBrushed stainless steel
Lock TypeStainless steel security lock
Plate ThicknessStandard 1.0-1.5mm (customizable)
Corrosion Resistance GradeExcellent, suitable for coastal & humid areas
Applicable StandardIEC 60439-1
CustomizationFull custom size & internal configuration supported

Standard Size Options (Width × Height × Depth, mm)

  • 250 × 300 × 150
  • 300 × 400 × 200
  • 300 × 400 × 250
  • 400 × 300 × 200
  • 400 × 500 × 200
  • 400 × 500 × 250
  • 400 × 500 × 300
  • 500 × 400 × 200
  • 500 × 400 × 250
  • 500 × 600 × 200
  • 500 × 600 × 250
  • 500 × 600 × 300
  • 500 × 700 × 300
  • 600 × 500 × 250
  • 600 × 800 × 200
  • 600 × 800 × 300
  • 800 × 600 × 200
  • 1000 × 800 × 300

Application Scenarios

  • Outdoor low-voltage power distribution for industrial parks, residential communities and commercial buildings
  • Solar photovoltaic (PV) array combiner boxes and outdoor PV distribution systems
  • Street lighting control cabinets and security monitoring power boxes
  • Municipal engineering outdoor electrical equipment enclosures
  • Outdoor power distribution for charging stations and new energy facilities
  • Coastal and high-humidity area outdoor electrical installations
  • Factory outdoor equipment control boxes and power distribution units

Structural & Material Advantages

  1. Premium Material Guarantee

    Adopts authentic SUS304 grade stainless steel, with stable chemical properties and excellent corrosion resistance. It maintains good condition even in long-term outdoor exposure, acid rain and humid coastal environments, with a service life several times that of ordinary carbon steel enclosures.

  2. Scientific Waterproof Structure

    The integrated sloped top with extended overhanging eaves avoids rainwater accumulation on the cabinet top. The door panel is designed with a multi-layer bending stop edge, fitted with a sealed rubber strip, which effectively blocks rainwater intrusion and ensures reliable IP65 waterproof performance.

  3. High-strength Process

    Formed by CNC precision bending at one time, with no welding traces on the surface and smooth edges. The thickened plate and reinforced frame design improve the overall structural strength, resisting external impact and deformation.

  4. Humanized Detail Design

    Built-in standard mounting holes for quick wall fixation; stainless steel hinges for smooth and durable door opening and closing; reserved grounding terminals inside to ensure electrical safety; the brushed surface is easy to clean and maintains a neat appearance for a long time.

Customization Service

We provide one-stop customized solutions to meet diverse project requirements:
  • Custom enclosure dimensions and stainless steel plate thickness
  • Custom positions and sizes of cable inlet/outlet holes, with matching waterproof cable glands
  • Internal configuration assembly: DIN mounting rails, terminal blocks, circuit breakers, surge protective devices, etc.
  • Optional pole-mounting brackets for outdoor pole installation scenarios
  • Custom laser engraved brand logo and product label
  • Special surface treatment for highly corrosive industrial environments

Quality Assurance

  • All products adopt genuine SUS304 stainless steel, with material traceability and quality certification
  • Precision CNC manufacturing ensures dimensional accuracy and consistent assembly quality
  • 100% waterproof performance test and appearance inspection before delivery
  • Production and management strictly follow ISO 9001 quality system standards
  • Damage compensation policy for transportation: any damaged product during delivery will be replaced free of charge

Installation & Maintenance Tips

  1. Select a flat and stable installation position, fix the enclosure horizontally on the wall or mounting bracket to avoid tilting.
  2. After completing internal wiring, seal all cable entry holes with waterproof cable glands to maintain the overall IP65 protection performance.
  3. Regularly clean dust and debris on the enclosure surface and inside to ensure good heat dissipation and smooth operation of internal components.
  4. Periodically check the sealing rubber strip and door lock to maintain good waterproof and anti-theft performance.
  5. Avoid violent impact on the enclosure during installation and daily use to prevent structural deformation and seal failure.

Data Download

LVMA low voltage selection manual

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