Features
- IEC 61000-4-5 6KV
- Super heat dissipation; small linear temperature coefficient.
- Flameproof painting, resistant to heat & solvents.
Product Positioning and Core Use
The KNP-C series is a flameproof anti-surge wirewound resistor designed for electronic circuits that require resistance to transient surge conditions, short-time overloads, and elevated thermal loads. The resistor uses a wirewound construction with a flameproof coating. According to the product specifications, the series is tested for 6kV surge withstand according to IEC 61000-4-5 and supports a short-time overload test at 10 times the rated wattage for 5 seconds.
For industrial electronics, power electronics, and circuit protection applications in the German B2B market, KNP-C can be considered as a power wirewound resistor and surge resistor. Its specified temperature test range of -55°C to +200°C, together with its heat dissipation design, supports applications where thermal conditions and transient loads are important selection factors.
Product Specifications
| Parameter |
KNP-C Specification |
| Product Type |
Flameproof Wire Wound Resistor |
| Series |
KNP-C |
| Rated Wattage |
3WL |
| Temperature Coefficient |
300 ppm/°C |
| Temperature Range |
-55°C to +200°C |
| Surge Withstand |
6kV according to IEC 61000-4-5 |
| Short-Time Overload |
10× rated wattage for 5 seconds |
| Insulation Resistance |
1,000 MΩ |
| Maximum Surface Temperature |
275°C |
Applications
Industrial Electronics
KNP-C can be used in power and protection sections of industrial electronic equipment where resistive loads may be exposed to transient surge or short-time overload conditions. Its 6kV IEC 61000-4-5 surge test capability provides a specific technical reference when selecting an anti-surge resistor.
Power Electronics
In power electronics circuits, wirewound resistors can be used in positions requiring a defined power-handling capability. KNP-C is specified with a 3WL rated wattage and a short-time overload test at 10 times the rated wattage for 5 seconds, making these parameters relevant when evaluating circuits exposed to pulse or transient loads.
Circuit Protection
One of the key characteristics of KNP-C is its anti-surge capability. The series is tested for 6kV surge withstand according to IEC 61000-4-5, making it a candidate for circuit protection resistor applications. Final selection should be based on the actual surge waveform, duration, rated power, and operating temperature of the circuit.
High-Temperature Electronic Equipment
For electronic equipment exposed to elevated thermal conditions, KNP-C provides a specified temperature test range of -55°C to +200°C and uses a heat-resistant flameproof coating. The specified maximum surface temperature is 275°C. When operating above 70°C ambient temperature, the rated load should be reduced according to the derating curve.
