Pronto Energy 
KNHC Modular Contactor for Building Control
The KNHC 4P modular contactor controls lighting, heating and building services up to 16-25A. Its compact DIN-rail design and quiet operation make it ideal for building automation and smart control systems.
Applications & circuit protection
The KNHC modular contactor is designed for building control applications, switching lighting circuits, HVAC and other building services reliably from control panels.
- Lighting circuit control
- Heating and HVAC switching
- Building automation systems
- DIN-rail control panels
Construction & operating reliability
The KNHC features a compact modular design, quiet operation and high contact reliability, with a clear position indicator for maintenance.
- Compact modular DIN-rail design
- Quiet operation for building use
- High contact reliability
- Clear ON/OFF position indication
Wiring Diagram
Technical Parameter
| Parameter | Value |
| Compliant with standards | IEC/EN 61095, IEC 60947-4-1 |
| Application | Switching and control of lighting, heating, ventilation, pumps and household loads |
| Number of product poles | 4P |
| SKU current range | 16–25A |
| Catalogue current information | Series application current up to 100 A; detailed catalogue ratings are model-dependent |
| Rated working voltage | Up to 400 V AC |
| Rated frequency | 50/60 Hz |
| Coil voltage options | 24 / 110 / 240 V AC, 50 Hz |
| Utilisation categories | AC-7a, AC-7b |
| Installation method | DIN rail |
Standards & certifications
The KNHC is designed in accordance with IEC/EN 61095, IEC 60947-4-1 and is available with CE, CCC certifications. Certification documentation can be provided according to project and destination-market requirements.
- Standard: IEC/EN 61095, IEC 60947-4-1.
- Certifications: CE, CCC.
- Protection level: IP20 (where applicable).
OEM & B2B supply support
KORLEN supports distributors, OEM manufacturers, electrical contractors and project buyers with product selection, samples, technical documentation and commercial quotations.
If the KNHC configuration does not match your project, send us the required specifications, quantity and destination market. Our team can help identify a suitable configuration.
- Samples available for product evaluation.
- Flexible quantities for project and B2B purchasing.
- OEM and ODM support for suitable projects.
- Technical documentation and certification support available.
Frequently Asked Questions
The KNHC switches lighting, heating and building services in commercial and residential building control systems.
The KNHC covers 16-25A for AC loads.
It is installed on 35mm DIN rail inside distribution boards or control panels.
Yes, it can be controlled by timers, sensors and building automation controllers for automatic switching.
