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Industrial Combination Boxes | Multi-Socket Power Distribution Units
Industrial Plug and Socket-Industrial Combination Box
KRIPAL manufactures industrial combination boxes that integrate multiple IEC 60309 socket outlets of different current ratings into a single IP-rated enclosure, creating a compact power distribution unit for construction sites, workshops, marinas and event power applications. Standard configurations combine a main incoming supply socket with 2 to 6 outgoing sockets of various ratings. Available with MCB circuit breaker protection, RCD residual current protection and individual socket switching. Enclosures rated IP44 or IP67 with robust thermoplastic or metal construction for impact resistance in high-traffic industrial environments.
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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 socket outlets, circuit protection devices and an incoming supply connection in one factory-built enclosure. KRIPAL manufactures combination boxes in standard and custom configurations, eliminating the time and cost of field-building distribution units from individual components.
Combination Box Configuration Options
Incoming Supply and Outgoing Socket Configuration
Standard designs include a main incoming supply typically rated 63A or 125A with 2 to 6 outgoing sockets cascading through 16A, 32A and 63A ratings. The main incoming can be a flange mount plug for portable generator connection or a cable gland entry for direct wiring. Outgoing sockets can be angled, straight or panel mounted depending on the enclosure design.
Circuit Protection: MCB, RCD and RCBO Options
Each outgoing socket circuit can be protected by an individual MCB (Miniature Circuit Breaker) for overcurrent and short-circuit protection. RCD (Residual Current Device) protection at 30mA sensitivity provides personnel shock protection for socket outlets. RCBO devices combine both functions in one unit per outgoing circuit. Protection devices are DIN rail mounted inside the enclosure.
Enclosure Material and Environmental Rating
Enclosures are manufactured from impact-resistant thermoplastic or powder-coated sheet steel. IP44 versions suit covered outdoor areas and interior industrial environments. IP67 versions provide complete dust and immersion protection for exposed construction sites, event power distribution in wet conditions and marine deck applications. Hinged lid with tool-operated or quick-release fasteners provides secure closure.
Individual Socket Switching and Indication
Outgoing sockets can be individually switchable with rotary or toggle switches. LED or neon indicator lamps provide visual confirmation of circuit energization status. Optional voltmeter and ammeter panel instruments allow site electricians to monitor supply voltage and load current without opening the enclosure or using separate test equipment.
Configure Your Custom Combination Box
- Custom Configuration Service: Specify your required incoming supply rating, outgoing socket types and quantities, circuit protection requirements and our engineers design the box layout with a detailed quotation.
- CAD and Wiring Diagrams: Receive enclosure dimensional drawings and internal wiring schematics for your project documentation and site electrician reference.
- Project Volume Supply: Contact our export team for volume pricing on standardized or custom combination box configurations with delivery scheduling for multi-site projects.
Combination Box Deployment Across Industries
KRIPAL industrial combination boxes serve as pre-assembled power distribution hubs in locations where multiple equipment connections are needed from a single incoming supply point, eliminating the complexity and installation time of field-building distribution units from individual components.
Construction Site Temporary Power Distribution Hubs
IP67 combination boxes placed at strategic locations across a construction site distribute power from a main 125A feeder to 63A, 32A and 16A outlets serving tower cranes, material hoists, site lighting and tool charging stations. RCD protection on each outlet circuit provides personnel shock protection per site electrical safety requirements.
Marina Berth and Dock Power Pedestals
Combination boxes configured as marina power pedestals provide multiple metered socket outlets for berthed vessels requiring shore power connections. IP67 stainless steel enclosures resist salt spray corrosion while individual RCD protection on each berth outlet isolates electrical faults to the affected vessel only.
Outdoor Event and Catering Power Distribution
Pre-configured combination boxes with 63A incoming and mixed 32A and 16A outlets feed food concession trailers, refrigeration units, sound system racks and vendor stalls at outdoor markets, festivals and sporting events. The self-contained distribution unit deploys in minutes compared to hours of field assembly.
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 design combination box configurations with optimal socket ratings and positions for each distribution point.
- Compliance Documentation Package: CE certificates, circuit protection coordination studies and IP rating test reports for your site electrical safety file.
- Project Supply and Delivery: Contact our export team for volume pricing with factory-built and tested units delivered ready for immediate site deployment.
Behind KRIPAL Combination Box Manufacturing
KRIPAL manufactures industrial combination boxes as complete factory-assembled and tested power distribution units, integrating our own IEC 60309 sockets, circuit protection devices and enclosures in our Zhejiang facility. Each unit undergoes full functional testing before shipment, providing electrical contractors and site managers with deployment-ready distribution hubs.
Factory-Built and Fully Functionally Tested
Every combination box is assembled, wired and tested in our facility before shipment. Functional testing includes socket outlet voltage verification under load, RCD trip time measurement, MCB trip characteristic confirmation and enclosure IP sealing verification. The unit arrives on site ready for immediate cable connection and deployment.
ISO 9001 Certified Assembly and Test Process
Wiring is performed to documented assembly procedures with torque-controlled terminal tightening. Each unit receives a unique serial number with full traceability to the assembly technician, component batch numbers and test results. Documentation supports warranty claims and periodic inspection requirements throughout the unit service life.
In-House Component Supply Chain Integration
The sockets, connectors, circuit breakers and enclosures used in KRIPAL combination boxes are predominantly manufactured in our own facility. This vertical integration eliminates supply chain delays from third-party component suppliers and ensures consistent quality across every sub-component of the assembled distribution unit.
Custom Configuration Without Engineering Delays
Our in-house engineering team designs combination box layouts based on your socket and protection requirements, producing enclosure drilling drawings, internal wiring schematics and assembly instructions within standard lead times. Custom configurations do not require outsourced design services or extended engineering approval cycles.
Project Inventory and Staged Delivery Programs
For multi-site projects, we warehouse completed combination boxes and release against your installation schedule. This eliminates on-site storage requirements and reduces the risk of damage or theft of distribution equipment on active construction sites.
Private Label with Enclosure and Component Branding
Custom branding on the enclosure exterior, internal component labels and wiring diagrams. Your company identification on the distribution unit supports brand visibility on customer sites and simplifies spare parts identification for your service teams.
Complete Export Documentation Package
Each combination box shipment includes assembly test reports, RCD trip time certificates, wiring diagrams, component datasheets and certificates of origin. Documentation supports site electrical safety file compilation and equipment register population.
Direct Technical Support for Site Integration
Electrical project managers communicate directly with KRIPAL engineers for combination box specification, site cable sizing coordination and on-site commissioning guidance. No distributor intermediary between your project team and the factory that built your distribution equipment.
Frequently Asked Questions
Explore FAQ >An industrial combination box is a factory-assembled power distribution unit that integrates multiple IEC 60309 socket outlets, circuit protection devices and an incoming supply connection in one IP-rated enclosure. It functions as a ready-to-deploy distribution hub, eliminating the need to field-build distribution boards from individual sockets, breakers and enclosures. KRIPAL combination boxes are available in standard and custom configurations from 16A to 125A ratings.
KRIPAL combination boxes can be configured with MCBs (Miniature Circuit Breakers) for overcurrent and short-circuit protection on individual outgoing circuits, RCDs (Residual Current Devices) at 30mA sensitivity for personnel shock protection, and RCBOs combining both functions in one device per circuit. The protection scheme is designed to isolate a faulted circuit without affecting power supply to other outlets in the same box.
Yes. KRIPAL offers custom combination box configurations where you specify the incoming supply rating and type, the number and rating of outgoing sockets, circuit protection requirements, individual socket switching, indicator lamps and metering options. Our engineering team produces enclosure layout drawings and a quotation based on your specification. Contact our export team with your requirements.
Combination box enclosures are manufactured from impact-resistant thermoplastic or powder-coated sheet steel. IP44 versions suit covered outdoor areas and interior industrial environments. IP67 versions provide complete dust and water immersion protection for exposed construction sites, marine deck applications and areas subject to hose-down cleaning. Hinged lid designs with secure fasteners provide tool-operated or quick-release access.
Yes. Every KRIPAL combination box is fully assembled, internally wired and functionally tested in our facility before packing and shipment. Testing includes socket outlet voltage verification under load, RCD trip time measurement, MCB trip characteristic confirmation and enclosure IP sealing verification. The unit arrives on site requiring only external cable connection to be operational.
Each unit is supplied with an assembly test report, wiring schematic diagram, RCD and MCB trip test certificates, component datasheets for the installed sockets and protection devices, and an IP rating compliance certificate. This documentation package supports site electrical safety file compilation, periodic inspection and test regimes, and equipment register population.
Lead times vary based on configuration complexity, the specific components required and current production loading. Standard configuration combination boxes using common socket and protection device combinations are typically available from stock or with short lead times. Custom configurations require enclosure design and assembly scheduling. Contact our export team with your specification for a current lead time estimate.
Yes. KRIPAL offers private label manufacturing with your company branding on the enclosure exterior, internal component labels and documentation. Custom wiring diagram formats and installation instruction sheets matching your project documentation standards are available. Contact our export team to discuss your branding and documentation requirements.
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