Key Features of SPB Stainless steel electrical box
| Material | SUS304 (other material types are option) |
| Surface treatment | Wire drawing |
| Protection | IP65 (acc. to GB4205-1993 EN60529) |
| Mounting plate | Galvanized sheet |
| Standard configuration | Door plate,box body,sealing strip,grounding set,mounting plate,door lock |
| Against mechanical impacts | IK10 |
| Temperature range | 40℃ to+80℃ |
| Door opening method | Cover holes at the bottom,hinges on the left |
| Optional accessories | Ground wire,metal hanging angle,stainless steel hanging angle |
Structure and Installation Details
The enclosure is designed for easier component installation, wiring and wall mounting. The detachable mounting plate and complete mounting accessories help improve assembly efficiency during electrical cabinet installation.
Enclosure Structure
● Frame-type structure: High strength and load-bearing capacity; suitable for large-scale cabinets.
● Panel-type structure: Simple manufacturing process and low cost; suitable for standardized production of enclosures.
Door Design Features
● Reinforced with stiffeners for increased rigidity; utilizes high-strength hinges ensuring an opening angle >90°. Equipped with specialized locks and sealing gaskets to meet cabinet security and IP protection standards.
Internal Layout and Thermal Optimization
● Features removable mounting plates and segregated routing for high- and low-voltage wiring, facilitating easy maintenance.
● Incorporates louvered or labyrinth-style ventilation vents, balancing dust and water protection with efficient heat dissipation.
Installation Made Easy
Wall mounting accessories help secure the stainless steel electrical enclosure to the installation position. The standard hardware set supports convenient on-site assembly and maintenance.
Note: Product dimensions and cutout sizes vary by model. Please refer to the final drawing or datasheet before installation.
Specification Data
| No. | Order number | Height | Width | Depth | Wall Thickness | Remarks |
| 1 | SPB202010 | 200 | 200 | 100 | 1.2 | – |
| 2 | SPB252015 | 250 | 200 | 150 | 1.2 | – |
| 3 | SPB302015 | 300 | 200 | 150 | 1.2 | – |
| 4 | SPB302520 | 300 | 250 | 200 | 1.2 | – |
| 5 | SPB403020 | 400 | 300 | 200 | 1.2 | – |
| 6 | SPB503020 | 500 | 300 | 200 | 1.2 | – |
| 7 | SPB503030 | 500 | 300 | 300 | 1.2 | – |
| 8 | SPB504020 | 500 | 400 | 200 | 1.2 | – |
| 9 | SPB505025 | 500 | 500 | 250 | 1.2 | – |
| 10 | SPB604020 | 600 | 400 | 200 | 1.2 | Door panels with stiffeners |
| 11 | SPB604025 | 600 | 400 | 250 | 1.2 | Door panels with stiffeners |
| 12 | SPB605020 | 600 | 500 | 200 | 1.2 | Door panels with stiffeners |
| 13 | SPB605025 | 600 | 500 | 250 | 1.2 | Door panels with stiffeners |
| 14 | SPB705020 | 700 | 500 | 200 | 1.2 | Door panels with stiffeners |
| 15 | SPB705025 | 700 | 500 | 250 | 1.2 | Door panels with stiffeners |
| 16 | SPB806025 | 800 | 600 | 250 | 1.5 | Door panels with stiffeners |
| 17 | SPB806030 | 800 | 600 | 300 | 1.5 | Door panels with stiffeners |
| 18 | SPB1006030 | 1000 | 600 | 300 | 1.5 | Door panels with stiffeners |
| 19 | SPB1008030 | 1000 | 800 | 300 | 1.5 | Door panels with stiffeners |
| 20 | SPB12010030 | 1200 | 1000 | 300 | 1.5 | Door panels with stiffeners |
| 21 | SPB12010040 | 1200 | 1000 | 400 | 1.5 | Door panels with stiffeners |
Where to Use Stainless Steel Waterproof Electrical Enclosures
SPB stainless steel waterproof enclosures are suitable for electrical protection projects where outdoor exposure, moisture, dust or corrosion resistance should be considered.
Stainless Steel Electrical Enclosures Factory Process
As a stainless steel electrical box factory, Saipwell follows a controlled sheet metal process to improve enclosure accuracy, structural strength, sealing performance and assembly quality.
Quality Control & Certifications
Saipwell can provide available certificates and test reports according to the specific model and order requirement.
Custom Stainless Steel Enclosure Box Manufacturer
Saipwell supports custom stainless steel enclosures based on project drawings, component layout, installation method and branding requirements.
| Custom Option | Available Configuration |
| Custom Size | Height, width and depth can be customized |
| Material Options | SUS304, SUS316 or other material options |
| Middle Door Option | Optional acrylic middle door for separated operation and protection |
| Reinforced Structure | Reinforcement ribs can be added for enclosure sizes over 1 meter |
| Cable Entry | Bottom, side or custom cutout positions |
| Mounting Plate | Custom size, holes and internal layout |
| Branding | Private label, logo, label and packaging available |
| MOQ Reference | Custom orders normally start from about 50–60 pcs |
Send your size, material, quantity, cable entry direction, internal component layout and branding requirements. Saipwell can provide a custom stainless steel electrical enclosure solution for your project.
FAQ About Stainless Steel Electrical Enclosures
What is a waterproof stainless steel box used for?
A waterproof stainless steel box is used to protect terminals, switches, relays, power supplies, control components and wiring parts in outdoor, humid or industrial environments.
Is this an IP66 stainless steel enclosure?
Yes. The SPB stainless steel electrical enclosure is designed with a PU foaming sealing strip and IP66 protection structure to help protect the box body from dust and water ingress.
Can this stainless steel enclosure box be used outdoors?
Yes. This stainless steel enclosure box is suitable for outdoor electrical protection projects, including control systems, industrial wiring, equipment protection and power distribution applications.
What material is used for this stainless steel electrical box?
The standard material is SUS304 stainless steel. Other material options can be discussed according to the installation environment, corrosion-resistance requirement and project specification.
What is the standard surface treatment for this stainless steel electrical enclosure?
Wire drawing is the standard surface treatment for this stainless steel enclosure. It provides a clean stainless steel appearance and is suitable for many outdoor and industrial electrical enclosure applications.
Can powder coating be applied to stainless steel enclosure boxes?
Powder coating can be discussed for selected customized metal enclosure projects. If the project requires a specific color, coating finish or surface protection, please confirm the material, quantity and application environment before production.
Is pre-treatment available before powder coating?
Yes. Pre-treatment such as degreasing, pickling or phosphating can be arranged according to material and coating requirements to help improve coating adhesion and surface quality.
What does NEMA 4X mean for a stainless steel enclosure?
NEMA Type 4X enclosures are designed for indoor or outdoor use, providing protection against windblown dust, rain, sleet, snow, splashing water, hose-directed water and additional corrosion protection. For NEMA 4X stainless steel enclosure projects, please confirm the required document scope before ordering.
Can an acrylic middle door be added?
Yes. An optional acrylic middle door can be added for customized stainless steel enclosures when the project needs separated operation, component protection or visible internal layout.
Can large stainless steel electrical boxes be reinforced?
Yes. For customized stainless steel electrical boxes over 1 meter, reinforcement ribs can be added to improve structural stability and reduce deformation risk.
Can I add my own brand or label?
Yes. Private label, logo, product label and packaging customization are available for OEM orders, project supply and distributor cooperation.
What information should I provide for quotation?
Please provide the enclosure size, material, quantity, IP rating requirement, cable entry direction, internal component layout, mounting method, surface treatment and branding needs
Is Saipwell a stainless steel enclosures manufacturer?
Yes. Saipwell is a stainless steel enclosures manufacturer and stainless steel electrical box factory, offering standard and customized enclosure solutions for outdoor, industrial and electrical protection projects.
