Product Introduction
This heavy-duty waterproof junction box is a specialized protective enclosure designed for secure outdoor electrical wiring and cable management. It is engineered to safeguard complex connections from moisture, dust, and environmental stress, featuring an integrated multi-port design with four heavy-duty sealing glands. The compact, industrial-black housing is built for high-reliability applications, providing a stable and weather-tight environment for power distribution and sensor connectivity in demanding outdoor settings.
Technical and Structural Details
- Multi-Port Sealing System: Equipped with four high-precision cable glands that utilize a compression-seal mechanism to lock cables in place while maintaining a waterproof barrier.
- Reinforced Enclosure Body: The main housing is molded with thick-walled engineering plastic to prevent structural deformation and ensure long-term impact resistance.
- Secure Fastening Points: Features four deep-recessed screw pillars on the top cover for a uniform, high-pressure seal against the internal gasket.
- Integrated Mounting Flanges: The base includes molded external mounting ears, allowing for rapid and secure installation onto walls, poles, or machinery without compromising the internal seal.
Material Specifications
|
Feature |
Technical Detail |
|
Housing Material |
High-Impact ABS or UV-Stabilized Polycarbonate (PC) |
|
Environmental Protection |
IP66/IP67 rated for complete dust and water immersion protection |
|
Temperature Range |
Engineered to maintain structural integrity from -40°C to +85°C |
|
Cable Compatibility |
Adjustable glands supporting a wide range of industrial cable diameters |
|
Safety Compliance |
RoHS & REACH certified; UL94-V0 flame retardancy available |
High-Reliability Engineering Design
Our design approach focuses on Maximum Protection. The internal geometry of this enclosure is optimized to provide ample space for wire terminals while maintaining a low-profile exterior that reduces wind resistance and debris accumulation. The precision-threaded glands are designed to prevent cable slippage and strain, ensuring that electrical connections remain undisturbed even in high-vibration industrial environments.
We offer full sub-assembly services for this product. Our factory can pre-install internal DIN rails, terminal blocks, or customized mounting brackets before shipment.
Industrial Applications
- Outdoor Lighting: Secure power distribution for street lamps and landscape lighting.
- Renewable Energy: Junction points for solar panel arrays and wind turbine sensors.Industrial Automation: Protection for outdoor sensor
- modules and communication cables.
- Maritime & Coastal: Corrosion-resistant wiring protection for docks and coastal facilities.
Company Introduction

Benma Electric is a professional custom injection mold design and plastic manufacturing factory, specializing in home appliance, automotive, lighting, and industrial plastic components.
We provide a complete OEM & ODM solution including:
- Product DFM and structural optimization
- High-precision CNC & EDM mold fabrication
- Medium & large-size PP injection molding
- Appearance-grade surface control
- Secondary processing and assembly support
- Export packing and international logistics

Injection Workshop

Raw Material Warehouse

Hardware Workshop

Assembly Workshop

Laboratory

Office Area
Certified Quality & Compliance
- ISO9001 Quality Management System
- SMETA Ethical Trade Audit Certified
We have built long-term selective partnerships with customers in Japan, North America, and Europe.
Why Choose Benma for Refrigerator Door Handle Manufacturing
- Appliance Handle Mold Expertise
We specialize in handle-type parts requiring balanced strength, surface smoothness, and dimensional consistency.
- Japanese Quality Standard Control
Experienced with Japanese OEM cosmetic inspection criteria and assembly tolerance philosophy.
- Stable PP Injection Capability
Dedicated molding machines and controlled temperature systems ensure low warpage and repeatable results.
- Integrated Tooling & Production
Mold design, tooling, sampling, and mass production are all completed in-house for better cost and delivery control.
- Certified & Responsible Manufacturing
ISO9001 guarantees product consistency, SMETA ensures ethical and reliable supply chain compliance.
Contact Us Now
Are you sourcing a reliable refrigerator door handle injection molding supplier for the Japanese market?
Benma is ready to support your OEM project from concept to mass production.
To receive a fast quotation, please share:
- Photos or reference samples
- Estimated handle size
- Material preference
- Annual demand forecast
- Target appliance brand or market
- Surface and color requirements
Contact us now and our engineering team will respond within 24 hours.
How to Start Working With Benma
- Submit Design Or Sample
Send us drawings, photos, or a physical handle sample.
- Engineering Feasibility Review
We analyze mold structure, wall thickness, grip ergonomics, and deformation risk.
- Mold Quotation & Design Approval
Tooling cost and production pricing are provided transparently.
- Tooling Manufacture & First Sampling
In-house CNC machining and T1 injection trials.
- Sample Inspection & Confirmation
Dimensional measurement, pull-force testing, and assembly verification.
- Mass Production & Export Delivery
Stable batch molding with full QC reports and export-ready packing to Japan.
Injection Molding Workshop Planning
The workshop is arranged into dedicated operational areas, allowing for efficient process control and optimized production flow.


Factory equipment
We operate modern, high-performance equipment engineered for accurate and efficient production.


Packing and Shipping
Customized Packaging
Packaging can be fully customized-from logos and brand labels to carton artwork.
For export purposes, we apply sturdy cartons or steel-frame packing with standard shipping marks to ensure safe handling.
Shipping
For bulk orders
We partner with international logistics companies to offer efficient sea or air transportation solutions.
For samples & small orders
We arrange express shipping through TNT, FedEx, UPS, and DHL.

FAQ
Q: What do you need for customization?
A: CAD drawings, 3D files, or sample photos, plus material, finish, and quantity details. Quotation will be sent within 24 hours.
Q: Is my design confidential?
A: Yes, we can sign an NDA to fully protect it.
Q: Can my logo be added?
A: Yes, via engraving, printing, or mold-marking on plastic or silicone parts.
Q: Can you copy my sample?
A: Yes, we can measure, reverse-engineer, and produce it per your specifications.
Q: Payment methods?
A: T/T: 30% deposit, balance before shipment against B/L copy.
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