Honeywell 51303940-150 Cabinet Fan Assembly with Fault Alarm

Honeywell 51303940-150 is an original dual-fan cooling assembly dedicated for Honeywell TDC 2000/3000 and Experion PKS DCS control cabinets. 

It consists of two high-speed cooling fans plus a built-in monitoring control circuit board, forced air cooling for CPU cards, I/O modules and power 

supplies inside the cabinet to prevent overheating shutdown of precision control components.

This unit features real-time fan speed and fault detection function; once fan stall, speed drop or failure occurs, it outputs relay alarm signal to the DCS system for fault prompt 

and preventive maintenance. It is a mandatory thermal management spare part for long-term stable operation of power plant, petrochemical large-scale distributed control systems.

Technical Specifications

Part Number: 51303940-150

Manufacturer: Honeywell

Type: Dual Cabinet Cooling Fan Assembly with Alarm

Rated Input Voltage: 85–132 VAC, 47–63 Hz

Rated Current: 0.5 A

Alarm Contact Rating: Max 0.5A DC, peak 200VDC resistive

Fan Speed: 3100 RPM nominal

Net Weight: Approx. 3.22 kg

Operating Temperature: -20°C ~ +60°C

Protection Class: IP20 (indoor cabinet installation)

Mounting: Standard embedded cabinet installation

Origin: USA

Certification: CE, UL

Key Features

Dual-fan parallel design provides strong airflow, efficient heat dissipation for densely arranged DCS card racks.

Independent fault monitoring circuit detects fan abnormal rotation, outputs dry contact alarm to upper control system.

Industrial reinforced structure, anti-vibration and anti-dust design adapting harsh factory cabinet environment.

Plug-in fixed structure for easy disassembly, maintenance and direct replacement without cabinet transformation.

Fully matched Honeywell classic TDC series and Experion PKS DCS system, original replacement spare part.