Product Description
Reliable 380-415V power distribution across temporary and permanent installations requires connectors that resist environmental exposure and prevent cross-mating between incompatible systems. The KUPO KHTN025 is a 32A CEE form plug (inline male) designed to IEC (International Electrotechnical Commission) 60309-1 and 60309-2 standards. Its flame-retardant PA6 (Polyamide 6) Nylon housing, nickel-plated brass contacts, and IP44 (Ingress Protection 44) splash-proof construction deliver the durability and safety needed for demanding 380-415V environments.
Key Features
- Protective earth engages first and releases last, ensuring the ground path is established before live contacts connect
- Keyed earth contact at the 6-hour clock position prevents cross-mating with incompatible voltage systems
- IP44 splash-proof housing provides protection against splashing water and solid objects larger than 1mm
- Tool-free bayonet twist-lock housing enables fast open/close access for wiring on busy jobsites
- Flame-retardant PA6 (Polyamide 6) Nylon housing provides high impact resistance, electrical insulation, and self-extinguishing properties
- Nickel-plated brass contacts deliver corrosion resistance and reliable low-resistance connections at sustained 32A loads
- All terminal screws face the same direction for faster, more intuitive wiring
- Anti-loosening fin structure maintains a secure connection even under vibration
- Red-coded housing identifies the 380-415V voltage class per international IEC 60309 color convention
- Rated for operation from -25 to 40 degrees Celsius
Certifications & Standards
- CE Marked: Low Voltage Directive 2014/35/EU
- IEC/EN 60309-1: 1999 +A1:2007 +A2:2012. General requirements for industrial plugs, socket-outlets and couplers
- IEC/EN 60309-2: 1999 +A1:2007 +A2:2012. Dimensional compatibility requirements for pin and contact-tube accessories
- RoHS Compliant: Directive 2011/65/EU and (EU)2015/863
- REACH Compliant: Regulation No 1907/2006, Article 33(1) Obligation
- IP44 Splash-proof
Applications
- Temporary and permanent power distribution on construction sites
- Three-phase heavy machinery, motor drives, and HVAC (Heating, Ventilation, and Air Conditioning) systems
- Welding equipment and pump station power supply
- Medium industrial equipment and multi-circuit temporary power
- Catering, event, and festival power distribution
- Cable assemblies, extension leads, and portable equipment connections
- Entertainment and live event production
Compatibility
The KUPO KHTN025 is manufactured to IEC 60309-1 and IEC 60309-2 standards, ensuring dimensional compatibility with CEE form connectors from all compliant manufacturers. The 6-hour clock position earth contact permits mating only with connectors of the same 380-415V voltage class, preventing cross-connections between incompatible electrical systems.
Voltage Color Convention
CEE form connectors use internationally standardized housing colors to indicate voltage class: Yellow for 110-130V, Blue for 200-250V, Red for 380-480V, and Black for 500-690V. The keyed clock position of the earth contact prevents cross-mating between different voltage systems, ensuring only compatible connectors can be joined. Always verify voltage and frequency compatibility with local electrical supply before installation.
Frequently Asked Questions
What are the key features and ratings of the KUPO KHTN025?
The KUPO KHTN025 is a 32A CEE form plug (inline male) built to IEC (International Electrotechnical Commission) 60309-1 and 60309-2 standards for 380-415V three-phase power distribution. It features a 5-pole (3P+N+E) configuration that carries three live conductors, one neutral conductor, and one protective earth conductor for complete power distribution. The flame-retardant PA6 (Polyamide 6) Nylon housing with nickel-plated brass contacts accepts cables from 2.5-6.0 mmsq. The IP44-rated housing measures 155 mm overall with a body diameter of 79.5 mm.
What safety mechanisms does the KHTN025 include to prevent incorrect connections?
As an inline male plug carrying 32A at 380-415V, the KHTN025 incorporates multiple layers of protection for safe field use. The keyed earth contact at the 6h clock position physically prevents cross-mating with connectors from incompatible voltage systems. The protective earth on this 5-pole (3P+N+E) connector always engages first and releases last, ensuring the ground path is established before any of the 4 remaining contacts connect. The IP44 (Ingress Protection 44) splash-proof rating protects this inline plug against water splashes and solid objects larger than 1mm during portable field use.
Is the KHTN025 compatible with CEE form connectors from other manufacturers?
The KUPO KHTN025 is manufactured to IEC 60309-1 and IEC 60309-2 dimensional standards, ensuring full interoperability with CEE form connectors from all compliant manufacturers worldwide. To mate correctly, both connectors must share the same amperage rating (32A), voltage class (380-415V), pole configuration (5-pole (3P+N+E)), and earth contact clock position (6h). The clock position keying acts as a mechanical interlock: a 380-415V connector with a 6h earth position cannot physically engage with a connector keyed to a different clock position, preventing dangerous cross-connections between incompatible electrical systems.
How is the KHTN025 wired and assembled onto a cable?
Open the bayonet twist-lock housing by rotating it counterclockwise, strip the cable conductors to the required length, insert each conductor into its corresponding terminal and tighten the terminal screws. All screws face the same direction for faster, more intuitive wiring. Close the housing by pressing and rotating clockwise until the bayonet locks engage. The KHTN025 accepts cables from 2.5-6.0 mmsq through a 17 mm cable entry opening. The overall body length is 155 mm with a body diameter of 79.5 mm. The IP44 protection is maintained when the housing is properly closed and the cable gland is correctly tightened.
In what environments and industries is the KUPO KHTN025 commonly used?
As a medium-duty three-phase plug, the KHTN025 serves catering and event equipment, multi-circuit temporary power distribution, medium industrial machinery, welding equipment, and workshop power feeds. As an inline plug, it is used in cable assemblies, extension leads, and portable equipment connections for heavy machinery and motor drives, industrial HVAC (Heating, Ventilation, and Air Conditioning) systems, welding equipment, pump stations, and large-scale power distribution.
Why does the KHTN025 use a 5-pole configuration instead of 4-pole?
The KHTN025 uses a 5-pole (3P+N+E) configuration that carries three live conductors, one neutral conductor, and one protective earth conductor for complete power distribution. The critical difference from 4-pole (3P+E) is the inclusion of a neutral conductor. A 4-pole connector carries three live phases plus earth, which is sufficient for balanced three-phase loads like motors and pumps. However, when the installation needs to supply both three-phase and single-phase loads from one connection, a neutral conductor is essential. The 5-pole KHTN025 enables distribution boards and temporary power systems to derive single-phase circuits (line-to-neutral) alongside three-phase feeds, making it the standard choice for event power distribution and mixed-load industrial panels.