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Industrial Combination Boxes | IP-Rated Multi-Socket Power Distribution Units
Industrial Plug and Socket > Industrial Combination Box
KRIPAL manufactures heavy-duty industrial combination boxes designed to integrate multiple IEC 60309 socket outlets into a single, compact power distribution unit. Built for rigorous environments like construction sites, industrial workshops, transit tunnels, marinas, and outdoor event venues, standard configurations seamlessly combine a main incoming supply with 2 to 6 outgoing socket outlets across various current and voltage ratings. Each unit can be equipped with integrated MCB circuit breaker protection, RCD/RCBO residual current protection, transparent operating windows for real-time visual inspection, and optional individual socket switches. Constructed from high-impact, corrosion-resistant PC thermoplastic (IK09 rated) or rugged cold-rolled/stainless steel, these units offer dependable IP44, IP65, or IP67 ingress protection against water, dust, and mechanical strain in high-traffic industrial settings.
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Ask a QuoteIndustrial Combination Box Selection Guide
An industrial combination box functions as a pre-assembled power distribution unit, combining multiple IEC 60309 socket outlets, circuit protection devices, and an incoming supply connection within a single factory-built enclosure. KRIPAL manufactures combination boxes in standard and fully customized configurations, eliminating the time and labor cost of field-building distribution units from individual components.
Combination Box Configuration Options
Incoming Supply and Outgoing Socket Configuration
Standard designs feature a main incoming supply typically rated up to 63A or 125A, with 2 to 6 outgoing sockets cascading through 16A, 32A, and 63A ratings across single-phase (230V) and three-phase (400V, 3P/4P/5P) systems. The main supply entry can be equipped with an appliance inlet/flange mount plug for generator hookups, or direct cable gland entry for fixed wiring. Outgoing sockets are available in angled, straight, or panel-mounted orientations to fit space and cable routing requirements.
Circuit Protection: MCB, RCD and RCBO Options
Each socket circuit can be individually protected by DIN rail-mounted MCBs (Miniature Circuit Breakers) for overcurrent and short-circuit safety, RCDs (30mA sensitivity) for personal electric shock protection, or combined RCBOs. Protection devices are housed beneath IP-rated transparent windows, enabling operators to perform visual inspections and reset tripped breakers without opening the main enclosure door or compromising sealing integrity.
Enclosure Material and Environmental Rating
Enclosures are precision-engineered from high-impact, flame-retardant PC (Polycarbonate, IK09 rated) or heavy-duty cold-rolled / stainless steel. IP44-rated models serve indoor workshops and covered sites, while IP65 and IP67 versions deliver total dust-tight and high-pressure water/immersion protection for exposed construction sites, transit tunnels, marine docks, and wet event venues. Built-in continuous polyurethane foam gaskets and quick-release or tool-operated latches ensure high sealing reliability.
Individual Socket Switching and Indication
Outgoing sockets can be configured with individual rotary isolator switches for dedicated circuit control. Optional LED indicator lamps, voltmeters, and ammeters provide instant visual status of line energization, voltage, and current draw, enabling site technicians to monitor power conditions safely at a glance.
Configure Your Custom Combination Box
- Custom Configuration Service: Specify your required incoming supply rating, outgoing socket types and quantities, and circuit protection requirements. Our engineering team will design a tailored box layout and provide a comprehensive quotation.
- CAD and Wiring Diagrams: Receive full enclosure dimensional drawings (CAD) and internal wiring schematics for seamless project documentation and site installation reference.
- Project Volume Supply: Contact our export sales team for tiered volume pricing on standardized or custom combination box configurations, complete with scheduled delivery plans for multi-site project deployments.
Combination Box Deployment Across Industries
KRIPAL industrial combination boxes serve as pre-assembled power distribution hubs in demanding locations where multiple equipment connections are required from a single supply point. By housing sockets, protection devices, and internal busbars in one compact unit, they eliminate the complexity, safety risks, and installation time of field-assembling individual components.
Construction Site Temporary Power Distribution Hubs
IP67 combination boxes placed strategically across construction sites distribute power from a 125A main feeder to 63A, 32A, and 16A socket outlets. These units safely power tower cranes, material hoists, site floodlighting, and tool charging stations. Dedicated 30mA RCD/RCBO protection on each circuit safeguards personnel against electric shock per strict site safety codes, while transparent operating windows allow fast breaker inspection and resets.
Marina Berth and Dock Power Pedestals
Configured as marina power distribution hubs, these boxes supply multiple metered socket outlets for berthed vessels requiring shore power. Built with IP65/IP67 stainless steel (UK-XZG3) or high-grade UV-stabilized PC enclosures, they withstand continuous salt spray, high humidity, and corrosive marine conditions. Individual RCD protection ensures electrical faults remain localized to the affected vessel without interrupting power to neighboring berths.
Outdoor Event and Catering Power Distribution
Pre-configured combination boxes featuring 63A incoming feeds and mixed 16A/32A outgoing sockets supply food concession trailers, refrigeration units, sound and lighting rigs, and vendor stalls at festivals, markets, and sporting events. Featuring high-impact PC construction (IK09 rated), these portable, plug-and-play power hubs deploy in minutes compared to hours of field wiring, providing safe, instant temporary power.
Deploy Ready-to-Use Power Distribution for Your Site
- Site Power Layout Planning: Send us your site plan showing equipment locations and power requirements. Our engineers will design optimized combination box configurations with precise socket ratings, protection levels, and enclosure footprints tailored for each distribution point.
- Compliance Documentation Package: Receive comprehensive CE certificates, IEC/EN 60309 & 61439 compliance documentation, circuit protection coordination studies, and IP44/IP65/IP67 rating test reports to satisfy your site electrical safety audit file.
- Project Supply and Delivery: Contact our export team for tiered project pricing on 100% factory-built and pre-tested units, delivered ready for immediate, plug-and-play site deployment.
Behind KRIPAL Combination Box Manufacturing
KRIPAL manufactures industrial combination boxes as complete, factory-assembled, and pre-tested power distribution units. By integrating our own IEC 60309 sockets, circuit protection devices, and robust enclosures at our Zhejiang manufacturing facility, we ensure total quality control. Every unit undergoes full functional testing before shipment, providing electrical contractors and project managers with deployment-ready power hubs.
Factory-Built and Fully Functionally Tested
Every combination box is precision-assembled, wired, and tested in our factory prior to dispatch. Comprehensive functional testing includes socket outlet voltage verification under load, RCD trip time measurement, MCB trip characteristic validation, and IP rating sealing checks. Units arrive on-site ready for immediate cable connection and instant operation.
ISO 9001 Certified Assembly and Test Process
All internal wiring adheres to strict assembly protocols with torque-controlled terminal tightening to prevent thermal loose connections. Each unit is assigned a unique serial number providing full traceability to the assembly technician, component batch numbers, and factory test logs. This documentation simplifies site inspections, maintenance tracking, and warranty validation throughout the product’s service life.
In-House Component Supply Chain Integration
The industrial plugs, sockets, circuit breakers, switches, and enclosures used in KRIPAL combination boxes are predominantly manufactured in-house. This vertical integration eliminates third-party component bottlenecks, ensures complete quality consistency, and provides competitive factory-direct pricing across every sub-component.
Custom Configuration Without Engineering Delays
Our in-house engineering team designs optimized combination box layouts tailored to your exact socket, protection, and space requirements. We generate enclosure layout drawings (CAD), schematic wiring diagrams, and BOMs within fast turnarounds, eliminating outsourced design delays or extended approval cycles.
Project Inventory and Staged Delivery Programs
For multi-phase or multi-site projects, we offer warehouse staging programs, holding completed distribution boxes in inventory and releasing them according to your site installation schedule. This minimizes on-site storage risks, protecting valuable distribution equipment from weather damage or theft.
Private Label & Custom Branding Solutions
We offer OEM/ODM private labeling, including custom logo silk-screening/laser-engraving on enclosure exteriors, customized rating plates, and branded internal component labels. Featuring your company identity enhances brand visibility on customer job sites and simplifies spare parts sourcing for your service network.
Complete Export Documentation Package
Every shipment is accompanied by a complete documentation file: factory test reports, RCD trip time certificates, wiring schematics, product datasheets, CE declarations, and Certificates of Origin (CO). This documentation seamlessly integrates into your site electrical safety audit and equipment registry.
Direct Factory Technical Support
Your electrical engineering team communicates directly with KRIPAL’s application engineers for combination box spec-in, site cable sizing coordination, and technical support. Eliminating distributor intermediaries ensures faster response times, clearer communication, and direct access to the factory that built your equipment.
Frequently Asked Questions
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