MELCO Fan MMF-12F24DS-RP5

Description

The MELCO MMF-12F24DS-RP5 is an original engineering, high-reliability 24V DC brushless axial cooling fan designed for thermal management across industrial automation equipment, inverter heat sink assemblies, and power electronic cabinets. Designed with high-durability dual ball bearings and an aerodynamic impeller, this unit provides high static pressure to ensure steady convective cooling through dense heatsink fins and enclosed chassis environments.

Model Reverse-Engineering and Architecture:
Series: MMF (MELCO DC Brushless Axial Cooling Series)
Frame Size: 120 mm x 120 mm
Frame Depth: 38 mm
Operating Voltage: 24 VDC Nominal
Speed and Power Class: D-Grade High Output (0.36 A / 8.64 W)
Bearing Configuration: Dual Ball Bearing Assembly
Termination Interface: RP5 Dedicated 3-Wire Harness with Sensor Signal

Comprehensive Technical Specifications:
Manufacturer: MELCO (Mitsubishi Electric)
Model Number: MMF-12F24DS-RP5
Rated Voltage: 24 VDC
Operating Voltage Range: 14.0 VDC to 27.6 VDC
Rated Current: 0.36 A
Rated Power Consumption: 8.64 W
Rotational Speed: 3,200 RPM (±10%)
Maximum Airflow: 3.10 m³/min (109.5 CFM)
Maximum Static Pressure: 82.0 Pa (0.33 in-H2O)
Acoustic Noise Level: 44.5 dB(A)
Bearing System: Dual Precision Ball Bearings
Frame Material: Glass-Fiber Reinforced Thermoplastic PBT (UL94V-0 Rated)
Impeller Material: Glass-Fiber Reinforced Thermoplastic PBT (UL94V-0 Rated)
Termination: 3-Wire Dedicated Plug-and-Play Lead Harness
Signal Interface: Speed Sensor / Tachometer Pulse Output
Dielectric Strength: 500 VAC, 50/60 Hz for 1 Minute
Insulation Resistance: 10 MΩ or Greater at 500 VDC
Operating Temperature Range: -10 °C to +70 °C
Storage Temperature Range: -30 °C to +85 °C
Expected Service Life (L10): 60,000 Hours at 40 °C
Weight: 310 g
Compliance and Certifications: UL, CE, RoHS

Technical Compatibility and Machine Integration:
The MMF-12F24DS-RP5 is engineered for direct integration into industrial variable frequency drives (VFDs), servo amplifiers, and high-density power supply racks. It serves as the direct factory replacement for Mitsubishi FR-series inverters (including FR-A700, FR-A800, FR-F700, and FR-F800 series) and MDS CNC drive units. The pre-terminated RP5 harness allows instantaneous mechanical and electrical replacement without wire splicing, retaining native speed feedback and inverter fault protection.

Industrial Application and Thermal Problem Solving:
Variable frequency drives operating in enclosed control panels generate localized heat at the power semiconductor stage (IGBT modules). Standard replacement fans lacking sufficient static pressure fail to push cooling air through dense heatsink channels, leading to premature thermal tripping (Overheat Faults), derated drive capacity, and unexpected production downtime. The MMF-12F24DS-RP5 delivers the required static pressure curve to maintain critical silicon junction temperatures within safe operating limits under continuous 100% duty cycles.

Supply Chain and Commercial Data:
Original Engineering: Authentic OEM Component Specification
Technical Compatibility: Direct Plug-in Replacement for Specified Drive Chassis
Lead Time: Ex-Stock Availability with Rapid Global Dispatch
Packaging: Anti-Static Industrial Protection for Transit Integrity