Honeywell 51303940-100 Fan Alarm Assembly Specs

The 51303940-100 fan alarm assembly from Honeywell monitors cooling airflow inside process control cabinets. This unit detects fan failure and alerts operators before heat damages sensitive electronics. Engineers select this assembly when they need reliable thermal protection and simple panel installation.

Technical Specifications

Parameter	Specification
Product Model	51303940-100
Module Type	Fan Alarm Assembly
Function	Fan status monitoring and alarm signaling
Interface	Fan connectors, alarm output contacts
Mounting	Cabinet panel or chassis mount
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 85°C
Weight	Approx. 0.45 kg
Dimensions	Approx. 180 mm × 120 mm × 40 mm
Energy Storage	On-board capacitors for alarm circuit filtering
Component Count	Sensor circuit, alarm relay, and connector set

Interface and Alarm Details

The 51303940-100 connects to cabinet fans through dedicated connectors and reports status through alarm output contacts. The sensor circuit tracks fan rotation and triggers an alert on stall. Therefore, technicians gain early warning before cabinet temperatures climb. The assembly mounts on a cabinet panel or chassis and secures with standard fasteners.

Physical and Environmental Parameters

The assembly measures roughly 180 mm by 120 mm by 40 mm and weighs about 0.45 kg. Its compact housing fits standard cabinets and leaves room for adjacent modules. Meanwhile, the 0°C to 60°C operating range covers typical control room conditions. The on-board filtering keeps alarm signals clean during electrical interference.

Why This Assembly Matters

Plant teams value the 51303940-100 for its early fault warning and simple servicing. The alarm relay contacts integrate easily with existing monitoring systems. As a result, overheating events drop and module life extends noticeably. Technicians also appreciate the clear status indicators and quick panel access.