Eaton 47-51668 | Breakable Glass Cover Assembly

Eaton 47-51668 | Breakable Glass Cover Assembly | Man-Off-Auto Switch Protection | Replacement Component | FD120 Fire Pump Controller | New

The Eaton 47-51668 is a factory-original breakable glass cover assembly designed to protect the Man-Off-Auto selector switch on Eaton FD120 series fire pump controllers. This replacement part is an essential safety component, engineered to restrict unauthorized or accidental switching of the controller during critical operations.

Installed over the selector switch, the 47-51668 glass cover must be physically broken to access the switch—ensuring that manual intervention is deliberate and recorded. This makes it especially valuable in fire protection systems governed by NFPA 20, where operator actions must be intentional, controlled, and in compliance with safety protocols.

This assembly includes the glass insert, mounting frame, and associated hardware for installation. It is compatible with Eaton FD120 fire pump controllers and may be suitable for other models using a Man-Off-Auto configuration with a protective cover requirement.

🔧 Key Features & Specifications:

• Manufacturer: Eaton
• Part Number: 47-51668
• Component Type: Breakable Glass Cover Assembly
• Function: Protective cover for Man-Off-Auto selector switch
• Application: Eaton FD120 Fire Pump Controller
• Contents: Glass insert, metal or plastic mounting frame, screws/hardware
• Use Case: Break-to-access cover for emergency/manual override or deliberate switch operation
• Compliance: Supports NFPA 20-compliant installations
• Installation: Front panel mounted, field replaceable
• Material: Tempered or engineered breakable safety glass
• Condition: New, OEM replacement part
• Compatible With: Eaton FD120 series and similar models using standard rotary selector switches

The 47-51668 cover assembly is a critical item for ensuring operational integrity and code compliance in fire pump control systems, where every second and every action matters.