IP68/IP69K Fans from NMB for Power Electronics
IP68/IP69K Fans from NMB for Power Electronics
In power conversion systems, such as photovoltaic solar inverters, thermal management is not merely a matter of efficiency — it is a vital condition for ensuring long-term operational reliability. These types of equipment are often installed outdoors, exposed to changing environmental conditions, and must withstand heavy workloads over extended periods. In hot climates or areas with high solar radiation, the risk of overheating increases significantly, along with the likelihood of premature failure in critical components.
Moreover, these converters incorporate high-density power electronics that continuously generate heat, even during nominal operation. If thermal dissipation is not properly managed, the system may suffer efficiency losses, accelerated material degradation, or even forced shutdowns. This is why having a reliable, robust ventilation solution designed for harsh environments is not merely advisable — it is essential.
Aware of this need, at RC Microelectrónica — as official distributors — we work closely with NMB to provide solutions that address the current challenges of solar conversion. NMB’s IP68/IP69K fan series has been specifically developed to ensure effective thermal performance under extreme conditions, delivering robustness, durability, and intelligent cooling control.
NMB IP68/IP69K Series: Robust, Intelligent, and Long-Lasting Ventilation
Designed to operate in harsh environments, this series offers the highest levels of environmental protection in accordance with international standards IEC 60529 and ISO 20653. This translates into complete dust tightness and proven resistance to high-pressure, high-temperature water jets — such as those used in industrial cleaning processes or during heavy rain in outdoor installations. This level of protection is especially valued in applications where the system is exposed to the elements or requires frequent maintenance.
The fans in this range are available in sizes from 40 to 172 mm and in various voltage options — 12 V, 24 V, and 48 V — making integration into a wide range of electronic configurations straightforward. They feature a lock signal or tachometric output signal for real-time speed monitoring, a capability that allows early detection of any anomalies or performance degradation in the ventilation system.
One of the most notable aspects of this series is the quality of its mechanical components. The fans are equipped with precision ball bearings, developed in-house by NMB, featuring stainless steel outer rings and, optionally, ceramic balls.
Technical features of the IP68/IP69K series
- Available sizes: from 40 mm to 172 mm
- Voltages: 12 VDC, 24 VDC, and 48 VDC
- Estimated lifespan: up to 100,000 h at 25 °C / 40,000 h at 60 °C
- Option to integrate flow control via PWM system
- Tachometer output option for speed monitoring or lock signal
Beyond the solar sector: multiple possible applications
Although this series is particularly well-suited for solar conversion systems, its robustness and performance make it an excellent choice for other industries where thermal management is essential. In industrial automation, these fans are ideal for cooling electrical cabinets, drives, PLCs, and control systems operating in demanding environments, thanks to their high resistance to dust, moisture, and high-pressure cleaning processes.
For electric vehicle chargers, their IP68/IP69K protection ensures reliable outdoor operation, keeping electronics at optimal temperatures and extending their service life. In telecommunications, they are ideal for base stations and remote nodes, helping to prevent overheating and ensure service continuity. Additionally, their compact size and durability make them highly suitable for industrial IoT devices and embedded electronics installed in hard-to-reach locations, reducing the need for frequent maintenance. They also offer a dependable solution for power supplies, inverters, and UPS systems, maintaining stable temperatures in critical components and improving energy efficiency, which lowers the risk of failure. Finally, in electronic instrumentation, medical equipment, and hygienic environments, their compatibility with high-pressure cleaning processes and resistance to chemicals make them an ideal choice for equipment that demands high precision and strict sanitary conditions.
