KHTN6351 – KUPO CEE Form 63A 5-Pole Industrial Inlet, 400V, IP67
IEC 60309 panel inlet, 6 – 25mm² cable range, PA6 Nylon, nickel-plated brass, CE certified.
- Amperage rating: 63A
- Voltage: AC 380~415V, 5-pole (3P+N+E), 6h
- Connector type: Inlet (panel male), IEC 60309
- Cable size: 6 – 25mm²
- Housing: Flame retardant PA6 Nylon, Red & Gray
- Contact material: Brass (nickel-plated)
- IP rating: IP44
- Operating temp: -25°C to 40°C
- Standard: IEC/EN 60309-1, IEC/EN 60309-2
- Compatibility: Intermates with all IEC 60309 connectors of matching rating
- Certifications: CE, RoHS, REACH
Learn more
CE marked per Low Voltage Directive 2014/35/EU. Compliant with IEC/EN 60309-1: 1999 +A1:2007 +A2:2012 and IEC/EN 60309-2: 1999 +A1:2007 +A2:2012. RoHS compliant per Directive 2011/65/EU and (EU)2015/863. EU REACH Regulation No 1907/2006 Article 33(1). Operating temperature: -25 to 40 degrees Celsius. IP44 rated: protected against solid objects over 1mm and water splashes from all directions.
Fully intermates with all IEC 60309-compliant industrial plugs and sockets of matching amperage, voltage, and pole configuration. The standardized earth contact position (clock hour keying) prevents cross-mating between different voltage ratings, ensuring safe connection across multi-vendor installations.
Best suited for:
Permanent panel-mounted power distribution in electrical enclosures, switchgear assemblies, generator output panels, portable power distribution racks for touring and events, and industrial control cabinets requiring standardized IEC 60309 connection points. Also suited for high-current industrial feeders, main power distribution for large-scale events and temporary installations, heavy machinery power supply, and primary service connections requiring robust multi-pole termination.
Product Description
For heavy industrial installations and primary distribution systems demanding high-current reliability, the KUPO KHTN6351 delivers a 63A CEE form inlet (panel-mount male) built to IEC (International Electrotechnical Commission) 60309-1 and 60309-2 standards. The flame-retardant PA6 (Polyamide 6) Nylon housing and nickel-plated brass contacts ensure durable, low-resistance performance, while the IP67 (Ingress Protection 67) watertight rating and keyed earth contact at the 6-hour clock position provide safe, error-free connections throughout the 380-415V voltage class.
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
- IP67 watertight housing withstands temporary immersion up to 1 meter and complete dust ingress for harsh outdoor and wet environments
- Rugged screw-type coupling maximizes mechanical strength and sealing integrity for stable performance in demanding conditions
- 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 63A loads
- All terminal screws face the same direction for faster, more intuitive wiring
- Panel-mount design with standardized cutting hole dimensions for straightforward integration into enclosures, distribution boxes, and equipment panels
- 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
- IP67 Watertight
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
- Heavy industrial main distribution feeds and generator connections
- Site main incomers and primary power infrastructure
- Distribution boards, switchgear assemblies, and equipment panel installations
- Entertainment and live event production
Compatibility
The KUPO KHTN6351 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
Frequently Asked Questions: KUPO KHTN635 CEE Form Inlet 63A 5P 380-415V
What are the key features and ratings of the KUPO KHTN635?
The KUPO KHTN635 is an 63A CEE form inlet (panel-mount 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 10-35 mmsq. The IP44-rated housing has a flange dimension of 120 mm and requires a panel cutout of 100 mm.
What safety mechanisms does the KHTN635 include to prevent incorrect connections?
As a panel-mounted inlet feeding 63A 380-415V power into equipment, the KHTN635 prioritizes safe power transfer at the point of entry. 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) rating protects the panel-mounted connection against splashing water from all directions and solid objects larger than 1mm, maintaining protection integrity within the enclosure.
Is the KHTN635 compatible with CEE form connectors from other manufacturers?
The KUPO KHTN635 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 (63A), 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.
What are the panel cutout requirements for installing the KHTN635?
Cut the panel opening to the specified cutout dimensions. Mount the inlet from the rear of the panel so that the pins protrude through to the front. Secure with mounting hardware and wire the internal conductors to the terminals from behind the panel. The KHTN635 has a flange dimension of 120 mm and requires a panel cutout of 100 mm. The cable size range for this unit is 10-35 mmsq. All terminal screws face the same direction for faster wiring. 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 KHTN635 commonly used?
As a heavy-duty three-phase inlet, the KHTN635 serves main power feeds, industrial switchgear inputs, large motor drives, heavy machinery connections, and large-scale temporary event power distribution. Panel-mounted in distribution boxes, switchgear assemblies, and equipment enclosures, it provides a permanent 380-415V connection point for Full three-phase distribution with the ability to supply both three-phase and single-phase loads from one connection. Essential for distribution boards, mixed-load panels, and temporary event power systems.
Why does the KHTN635 use a 5-pole configuration instead of 4-pole?
The KHTN635 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 KHTN635 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.
Video and Download
KHTN6351 — Download Spec Sheet (PDF) ↓
