Complete cooling fan assembly consisting of two original NMB-MAT 2415RL-04W-B59 24VDC fans mounted on the original OMRON metal support bracket, specifically designed for cooling the power and control electronics of OMRON KP Series photovoltaic inverters.

This ventilation module ensures efficient heat dissipation from critical inverter components, helping maintain safe operating temperatures and improving long-term reliability and performance.

The kit is supplied complete with:

• 2 Original NMB-MAT Cooling Fans
• Original Metal Mounting Bracket
• Original Wiring Harness
• Electrical Connectors
• Installed Cable Gland

🔄 Compatibility

Compatible with:

• OMRON KP100L
• OMRON KP125L
• OMRON KP150L

⚙️ Technical Specifications

• Fan Manufacturer: NMB-MAT (Minebea)
• Model: 2415RL-04W-B59
• Supply Voltage: 24 VDC
• Rated Current: 0.72 A
• Fan Type: Industrial Axial Cooling Fan
• Configuration: Dual Fan Assembly
• Original Wiring Included
• Original Metal Support Included
• Designed for Continuous Industrial Operation

🔧 Main Function

The cooling assembly provides forced-air cooling for:

• AC Power Board
• DC Power Board
• IGBT Modules and Heatsinks
• Electrolytic Capacitors
• Control Electronics
• Power Filters

Proper airflow prevents overheating and helps extend the service life of critical inverter components.

🔌 Purpose and Operation

The cooling fans are responsible for maintaining the correct internal operating temperature of the inverter by continuously removing heat generated during power conversion.

Effective cooling helps:

• Prevent thermal shutdowns
• Improve inverter reliability
• Protect power semiconductors
• Extend capacitor lifespan
• Maintain stable energy production
• Reduce thermal stress on electronic components

🧩 Role Within the Inverter System

The cooling system plays a critical role in the overall operation of the inverter.

It works in conjunction with:

• AC Power Board
• DC Power Board
• IGBT Power Modules
• Heatsinks
• Temperature Monitoring Circuits
• Main Control Board

Without adequate airflow, internal temperatures can rise rapidly, causing performance degradation and protective shutdowns.

⚠️ Common Problems Solved by Fan Replacement

Worn or defective cooling fans can cause:

• Overtemperature shutdowns
• Reduced power output
• Excessive fan noise
• Slow or seized fans
• Cooling system alarms
• Overheated heatsinks
• Accelerated capacitor aging
• Random inverter shutdowns
• Reduced inverter lifespan

🚨 Symptoms of Faulty Cooling Fans

Excessive Noise or Vibration

Symptoms:

❗ Loud fan operation
❗ Mechanical vibration
❗ Bearing wear noise

Fan Not Starting

Symptoms:

❗ No airflow
❗ Immediate temperature increase
❗ Cooling system faults

Slow Fan Operation

Symptoms:

❗ Reduced airflow
❗ Poor cooling performance
❗ Increased internal temperature

Temperature Alarms

Symptoms:

❗ Overtemperature warnings
❗ Thermal protection activation
❗ Production interruptions

Power Reduction

Symptoms:

❗ Thermal derating
❗ Reduced energy production
❗ Lower inverter efficiency

Shutdown During Hot Weather

Symptoms:

❗ Frequent summer shutdowns
❗ Temperature-related faults
❗ Reduced operational availability

🛠 Applications

• Repair of OMRON KP Series photovoltaic inverters
• Preventive cooling system maintenance
• Replacement of worn or noisy fans
• Restoration of inverter thermal performance
• Industrial and commercial solar power systems
• Inverter refurbishment projects

✅ Benefits of Replacement

• Restores proper cooling performance
• Improves inverter reliability
• Reduces risk of power-stage failures
• Extends capacitor and IGBT lifespan
• Eliminates abnormal fan noise and vibration
• Maintains rated inverter performance
• Helps prevent temperature-related shutdowns
• Reduces long-term maintenance costs

📦 Product Condition

Original OMRON cooling fan assembly complete with mounting bracket and wiring harness, ideal for preventive maintenance and repair of OMRON KP100L, KP125L, and KP150L photovoltaic inverters.

Professional solution for restoring the inverter cooling system and maintaining reliable long-term operation.

🟢 Summary

The Original Cooling Fan Kit for OMRON KP100L / KP125L / KP150L includes two genuine NMB-MAT 2415RL-04W-B59 24VDC cooling fans mounted on the original OMRON bracket with wiring and connectors. Designed to provide efficient cooling of power electronics and critical inverter components, this assembly helps prevent overheating, improve reliability, and extend the service life of OMRON KP Series photovoltaic inverters.