Waterproof Junction Box — WRA Series
Flame-retardant ABS enclosure with PVC knock-out stoppers; clean appearance, robust build.
Indoor/outdoor waterproof junction box junction box for wiring, controls, sensors, and small distribution points.
Simple mounting (base screws or wall anchors) and flexible entries for quick cabling.
Overview
The WRA Series waterproof junction box uses a flame-retardant ABS body and soft PVC knock-out stoppers for clean cable entry and reliable protection. It suits building services, machinery panels, lighting splices, sensors/actuators, and general branch wiring in workshops, plant rooms, car parks, and sheltered outdoor areas.
- Materials: ABS enclosure; PVC knock-out stoppers.
- Compliance: CE, RoHS.
- Mounting: internal base holes for PCB/rail; external wall-fixing via side holes (caps included).
- Entries: pierceable PVC knock-outs; use cable glands to maximize waterproof performance.
Final ingress protection depends on the entry method and cable gland selection. Match the gland to cable O.D. and follow torque guidance.
Key Features
- Rigid ABS enclosure with neat finish and consistent wall thickness.
- Soft PVC knock-outs for fast, tool-friendly cable entry.
- Base mounting holes for PCB/rail/standoff; optional external wall fixing.
- Multiple sizes and hole quantities for common wiring layouts.
- Low-profile lid blends with cabinets and equipment panels.
- CE & RoHS compliant materials.
- Works with cable glands for improved outdoor sealing.
Specifications
| Parameter | Value / Options |
|---|---|
| Series / Model | WRA — Waterproof Junction Box |
| Body material | ABS |
| Stopper / knock-out | PVC |
| Compliance | CE, RoHS |
| Mounting | Internal base screws; external wall fixing via side holes |
| Entries | Pierceable knock-outs; supports cable glands |
| Typical use | Junctions, sensor/actuator terminations, control wiring, lighting |
WRA Models & Dimensions
| Model Code | Shape | L (mm) | W (mm) | H (mm) | Hole Qty | Hole Size (mm) | G. Weight (KG) | N. Weight (KG) | Qty/Carton | Carton Dimension (cm) | IP |
|---|---|---|---|---|---|---|---|---|---|---|---|
| WRA 50 × 50 | Round | 50 | 50 | 4 | 25 | 14 | 12.9 | 300 | 45.5 × 38 × 51 | 55 | |
| WRA 80 × 50 | Round | 80 | 50 | 4 | 25 | 14.7 | 13.4 | 240 | 53 × 35 × 65 | 55 | |
| WRA 85 × 85 × 50 | Square/Rect. | 85 | 85 | 50 | 7 | 25 | 18 | 16.6 | 200 | 52 × 41 × 52.5 | 55 |
| WRA 100 × 100 × 70 | Square/Rect. | 100 | 100 | 70 | 7 | 25 | 16.3 | 14.7 | 100 | 61 × 49 × 34.5 | 65 |
| WRA 150 × 110 × 70 | Square/Rect. | 150 | 110 | 70 | 10 | 25 | 15.7 | 14.2 | 60 | 66.5 × 34.5 × 46 | 65 |
| WRA 150 × 150 × 70 | Square/Rect. | 150 | 150 | 70 | 8 | 25 | 16.1 | 14.3 | 60 | 84.5 × 34 × 45 | 65 |
| WRA 200 × 100 × 70 | Square/Rect. | 200 | 100 | 70 | 8 | 25 | 16.6 | 15.3 | 60 | 61 × 46 × 42 | 65 |
| WRA 200 × 155 × 80 | Square/Rect. | 200 | 155 | 80 | 10 | 36 | 15.5 | 13.9 | 40 | 69.5 × 43.5 × 41 | 65 |
| WRA 200 × 200 × 80 | Square/Rect. | 200 | 200 | 80 | 12 | 36 | 19.9 | 17.9 | 40 | 45.5 × 45.5 × 79 | 65 |
| WRA 255 × 200 × 80 | Square/Rect. | 255 | 200 | 80 | 12 | 36 | 22.8 | 21 | 40 | 55 × 44 × 79.2 | 65 |
| WRA 255 × 200 × 120 | Square/Rect. | 255 | 200 | 120 | 12 | 36 | 21.9 | 20.1 | 30 | 64 × 55 × 62 | 65 |
| WRA 300 × 250 × 120 | Square/Rect. | 300 | 250 | 120 | 12 | 36 | 22.4 | 19.9 | 20 | 64 × 55 × 61.5 | 65 |
| WRA 400 × 350 × 120 | Square/Rect. | 400 | 350 | 120 | 16 | 36 | 14.8 | 13.3 | 10 | 74.5 × 42.5 × 61.5 | 65 |
The first two models (WRA 50×50, WRA 80×50) are round; all subsequent models are square/rectangular.
Dimension
Applications
- Power distribution splices and branch circuits in panels and machinery.
- Sensor/actuator terminations for building automation and HVAC.
- Low-voltage lighting junctions and signage wiring.
- Communication/weak-current wiring segregation in utility areas.
- Sheltered outdoor installations with appropriate cable glands and sealing.
Installation & Wiring Guide
1) Plan entries
Select the knock-outs to open. Fit cable glands that match cable O.D.
2) Fix the enclosure
Use internal base holes or external wall holes. Keep the lid off during wiring.
3) Terminate & dress
Land conductors on terminal blocks, maintain bend radius, tidy with ties.
4) Seal & test
Tighten glands, close the lid evenly, then perform continuity and insulation tests.
Why Choose WILLELE for WRA
Reliable materials
Industrial ABS and PVC with consistent molding quality.
Size coverage
From compact 50×50 to XL 400×350×120 for diverse layouts.
Trade-ready
CE & RoHS compliance with documentation on request.
FAQ
Can WRA be used outdoors?
Yes, in sheltered areas and with proper cable glands and sealing.
Are terminal blocks included?
No. The enclosure includes base holes for rails/boards; terminals are optional.
What IP rating can I expect?
It depends on the model and the entry method; sealed glands are recommended.
Ready to specify WRA?
Send your model, quantity, and required accessories (cable glands / terminal blocks), and we will respond quickly.
