JXF Low Voltage Distribution Box
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Henan GNEE Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of jxf low voltage distribution box in China. If you're going to buy customized jxf low voltage distribution box made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.
What Is a JXF Low Voltage Distribution Box?
The JXF low voltage distribution box is a wall-mounted, enclosed metal enclosure designed for terminal power distribution in residential, commercial, and industrial applications. It receives incoming low-voltage power (220V/380V, 50Hz) from a main distribution board or feeder pillar and distributes it through multiple branch circuits to individual loads-lighting, sockets, motors, and control equipment.
The "JXF" name follows Chinese national standard naming conventions: J for junction/enclosure, X for distribution (power distribution function), and F for closed/enclosed structure. This distinguishes the JXF from open-type distribution boards and makes it suitable for both indoor and protected outdoor installations where personnel safety and environmental protection are required.
JXF distribution boxes are built from cold-rolled steel sheet (1.2mm standard, 1.5mm for larger sizes) with electrostatic epoxy powder coating (RAL 7035 light grey). They feature a removable internal mounting plate for DIN-rail components, a 180-degree opening door with zinc alloy AB lock, foamed-in-place door gasket for IP54 sealing, and dedicated grounding studs on both the door and body. Cable entry is from the bottom via knockouts or cable glands.
Looking for a specific JXF size or configuration?
We offer 40+ standard sizes and full custom manufacturing. Tell us your requirements-quote in 24 hours.
JXF Distribution Box Model Naming Convention
Understanding the model code helps you specify the exact JXF distribution box for your project. The naming follows a standardized format defined by Chinese national standards:
J X F - H x W x D - IP
Example: JXF-600x400x200-IP54
| Code | Meaning | Options |
|---|---|---|
| J | Junction box / Enclosure type | Indicates metal enclosure construction |
| X | Distribution function | Power distribution to branch circuits |
| F | Closed (enclosed) structure | F = closed; (open types use different codes) |
| H x W x D | Dimensions in millimeters | e.g., 600x400x200, 800x600x250, 1000x800x300 |
| IP | Ingress protection rating | IP42, IP43, IP54, IP65 |
For example, a model code JXF-800x600x200-IP54 means: a closed-type distribution box made of metal enclosure, with external dimensions of 800mm (height) x 600mm (width) x 200mm (depth), rated to IP54 protection level.
Key Features of the JXF Low Voltage Distribution Box
The JXF series is engineered for safe, reliable, and cost-effective terminal power distribution. Here are the design features that set it apart:
IP54 Dust & Splash Protection
Sealed enclosure with foamed-in-place door gasket protects internal components against dust ingress and water splashing from any direction. Suitable for indoor and outdoor use.
Cold-Rolled Steel Construction
1.2mm (standard) or 1.5mm (large sizes) cold-rolled steel sheet provides structural strength and impact resistance. Electrostatic epoxy powder coating ensures corrosion resistance.
Removable Internal Mounting Plate
2.0mm thick mounting plate slides out for easy component installation and wiring. Compatible with standard DIN-rail mounted breakers, RCDs, and busbar systems.
180-Degree Door Opening
Zinc alloy AB lock with full 180-degree door swing provides complete access to internal components for installation, inspection, and maintenance.
Dedicated Grounding System
Separate grounding studs on both the door and body ensure continuous earth bonding. Prevents static buildup and provides a safe fault-current path.
Bottom Cable Entry
Standard cable entry from the bottom via knockouts. Optional cable glands available for IP65 sealed entries. Prevents water ingress through cable penetrations.
Modular & Expandable
DIN-rail mounting allows flexible circuit configurations. Add or reposition breakers as your load requirements change-no need to replace the entire box.
Space-Saving Wall-Mount Design
Compact wall-mounted form factor saves floor space. Ideal for corridors, electrical closets, and areas where floor-standing panels are impractical.
JXF Low Voltage Distribution Box Technical Specifications
Below are the standard specifications for our JXF distribution box series. Custom configurations are available-contact our engineering team for special requirements.
| Parameter | Specification | Standard / Reference |
|---|---|---|
| Rated Working Voltage | AC 220V / 380V (50Hz) | GB/T 17466.1 |
| Rated Working Current | Up to 400A (125A for IP43 models) | GB7251.3 |
| Short-Circuit Withstand Current | 15kA | GB7251.3 |
| IP Protection Rating | IP54 (standard), IP42/IP43/IP65 (optional) | IEC 60529 |
| Enclosure Material | Cold-rolled steel sheet (1.2mm / 1.5mm) | GB/T 17466.1 |
| Mounting Plate Thickness | 2.0mm (removable) | - |
| Surface Treatment | Electrostatic epoxy powder coating (RAL 7035) | - |
| Door Gasket | Foamed-in-place sealing strip | - |
| Lock Type | Zinc alloy AB lock | - |
| Door Opening Angle | 180 degrees (full swing) | - |
| Cable Entry | Bottom entry (knockouts / cable glands) | - |
| Grounding | Dedicated studs on door and body | - |
| Ambient Temperature | -5°C to +60°C | GB/T 17466.1 |
| Altitude | ≤ 2000m above sea level | - |
| Relative Humidity | ≤ 50% at +40°C (90% at lower temps) | - |
| Mounting Type | Wall-mounted (surface or flush) | - |
| Certifications | CCC, CE, RoHS | - |
| Compliance Standards | GB/T 17466.1, GB/T 17466.24, GB7251.3, IEC 60529 | - |
| Warranty | 15 years (enclosure), 2 years (components) | - |
Download the full JXF technical datasheet
Get complete specifications, dimension drawings, and certification documents.
JXF Distribution Box Dimensions & Size Selection Guide
We manufacture JXF distribution boxes in over 40 standard sizes. The table below shows the most common configurations. Custom dimensions are available on request-simply provide your required circuit layout.
| Model | Height (mm) | Width (mm) | Depth (mm) | IP Rating | Typical Application |
|---|---|---|---|---|---|
| JXF-300x250x160 | 300 | 250 | 160 | IP54 | Residential, small branch circuits |
| JXF-400x300x160 | 400 | 300 | 160 | IP54 | Apartment distribution, lighting circuits |
| JXF-500x400x200 | 500 | 400 | 200 | IP54 | Commercial offices, small workshops |
| JXF-600x400x200 | 600 | 400 | 200 | IP54 | Commercial buildings, retail spaces |
| JXF-600x500x200 | 600 | 500 | 200 | IP54 | Medium commercial distribution |
| JXF-700x500x200 | 700 | 500 | 200 | IP54 | Industrial workshops, factories |
| JXF-800x600x200 | 800 | 600 | 200 | IP54 | Industrial plants, motor control |
| JXF-800x600x250 | 800 | 600 | 250 | IP54 | Industrial with deep components |
| JXF-1000x600x250 | 1000 | 600 | 250 | IP54 | Large industrial distribution |
| JXF-1000x800x250 | 1000 | 800 | 250 | IP54 | Main distribution for buildings |
| JXF-1200x800x250 | 1200 | 800 | 250 | IP54 | Heavy industrial, large facilities |
| JXF-1600x800x300 | 1600 | 800 | 300 | IP54 | Industrial main distribution, MCC |
| JXF-1800x800x300 | 1800 | 800 | 300 | IP54 | Large-scale industrial distribution |
| JXF-2000x800x300 | 2000 | 800 | 300 | IP54 | Max capacity industrial distribution |
Not sure which size you need? The box size depends on the number and type of breakers, busbar size, and required clearance. As a general rule, calculate the total DIN-rail space needed for all components, then add 20% for future expansion and wiring clearance. Our engineering team will help you select the right size-just send us your component list.
Applications of JXF Low Voltage Distribution Boxes
JXF distribution boxes are versatile terminal distribution enclosures used across a wide range of settings:
🏢Commercial Buildings
Office floors, retail stores, hotels-branch circuit distribution for lighting and power
🏠Residential Complexes
Apartment buildings, villas-household distribution and metering
⚙Industrial Plants
Factory floors, workshops-workshop distribution and motor branch circuits
🎒Schools & Hospitals
Educational and healthcare facilities-safe, reliable branch distribution
🚧Construction Sites
Temporary power distribution for tools and site lighting
🌄Outdoor Installations
Building exteriors, pump stations-IP54 weatherproof protection
Have a specific application in mind?
Our engineers will recommend the ideal JXF configuration for your use case-free consultation.
Installation and Mounting Guide for JXF Distribution Box
Proper installation ensures the safety and longevity of your JXF low voltage distribution box. Follow these guidelines:
Mounting Surface
Install on a flat, vertical wall surface. For uneven walls, use mounting brackets. The box must be plumb and level to ensure proper door operation and gasket sealing.
Height & Clearance
Mount so that the main breaker is at eye level (1.5-1.8m from floor). Maintain 200mm minimum clearance on all sides for ventilation and door opening.
Cable Entry
Route incoming and outgoing cables through the bottom knockouts. Use cable glands for IP65 sealed entries. Never route cables through the top in outdoor installations.
Grounding
Connect the main earth conductor to the grounding stud on the box body. The door-to-body bonding strap is pre-installed. Verify continuity < 0.1 ohm.
Environment
Avoid installation in direct sunlight or locations with ambient temperature exceeding +60°C. For humid environments, add an anti-condensation heater.
Routine Inspection
Inspect every 6-12 months: check door gasket integrity, tighten terminal connections, verify breaker operation, and clean ventilation openings.
Standards and Certifications for JXF Distribution Boxes
Our JXF distribution boxes comply with Chinese national standards and international equivalents:
| Standard | Scope | What It Guarantees |
|---|---|---|
| GB/T 17466.1 | Empty enclosures for electrical accessories | General requirements for enclosure construction, material strength, and IP verification |
| GB/T 17466.24 | Enclosures for specific configurations | Specific requirements for distribution box enclosures with mounted devices |
| GB7251.3 | Low-voltage switchgear assemblies | Type-tested assembly for distribution boards up to 400A |
| IEC 60529 | Degrees of protection (IP) | Verified protection against dust, water, and foreign objects |
| CCC | China Compulsory Certification | Mandatory safety certification for Chinese market |
| CE | European market compliance | Conformity with EU safety, health, and environmental requirements |
| RoHS | Hazardous substance restriction | No lead, mercury, or restricted materials in components |
Every shipment includes full type-test reports, material certificates, and compliance documentation. Routine test reports (dielectric, IP verification, mechanical operation) are provided with each unit.
FAQ
What IP rating does the JXF distribution box have?
The standard JXF low voltage distribution box is rated IP54, providing protection against dust ingress and water splashing from any direction. This makes it suitable for both indoor and outdoor installations. IP42 and IP43 variants are also available for indoor clean environments where splash protection is not required.
What is the rated current and voltage of a JXF distribution box?
JXF distribution boxes are rated for a maximum current of 400A at a rated voltage of AC 220V/380V (50Hz). Smaller models rated at 125A are also available for lighter distribution applications. The rated short-circuit withstand current is 15kA.
Can the JXF distribution box be used outdoors?
Yes. The JXF distribution box with IP54 rating is suitable for both indoor and outdoor use. The enclosure features a foamed-in-place door gasket for weather sealing, anti-corrosion electrostatic powder coating, and a zinc alloy lock. For harsh outdoor environments, optional anti-condensation heaters and stainless steel versions are available.
What material is the JXF distribution box made of?
The standard JXF distribution box is made from 1.2mm cold-rolled steel sheet (1.5mm available for larger sizes). The surface is treated with electrostatic epoxy powder coating (typically RAL 7035 grey). The internal mounting plate is 2.0mm thick and removable. Optional materials include stainless steel 316L and aluminum-zinc coated steel for corrosive environments.
How to order a custom JXF distribution box?
To order a custom JXF distribution box, provide your required dimensions (height x width x depth), IP rating, number of circuit ways, and the components to be installed (breaker types, busbar size). Our engineering team will confirm the configuration and provide a quotation within 24 hours. Custom colors, logos, and labeling are also available.
What standards does the JXF distribution box comply with?
JXF distribution boxes comply with GB/T 17466.1 and GB/T 17466.24 (Chinese national standards for empty enclosures), GB7251.3 (low-voltage switchgear assemblies), and IEC 60529 (IP rating verification). Certifications include CCC, CE, and RoHS compliance. Full type-test reports and certificates are provided with every shipment.
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