Robertshaw 366-A8 Vibraswitch – Malfunction Detector

The Robertshaw 366 A8 Vibraswitch is a rugged mechanical vibration switch designed to detect excessive vibration in motors, pumps, and fans. When vibration exceeds a preset threshold, it triggers a snap-action alarm switch—providing reliable protection against mechanical failure.

With adjustable sensitivity and a NEMA 4 cast aluminum enclosure, the 366-A8 is built for industrial environments and is ideal for integration into predictive maintenance systems.

Key Features & Benefits:

• Snap-action switch for fast equipment shutdown
• Factory-set or field-adjustable trip points
• Lockout feature prevents false trips during startup
• NEMA 4 cast aluminum housing – gasketed for industrial use
• Supports predictive maintenance and system reliability
• Designed for motors, fans, pumps, and rotating machinery

Specifications:

• Model: 366-A8 
• Mounting: Surface 
• Output: SPDT switch 
• Range: Factory-set or adjustable 0.3–4.5 g 
• Enclosure: NEMA 4 / IP66 
• Applications: Motors, HVAC fans, industrial pumps, conveyors