Littelfuse 201A-AU Monitor 320819-301 contractors can maintain the operational

contractors can maintain the operational integrity of complex pneumatic automation systems without requiring extensive field modifications

This unit is specifically engineered for R12 refrigerant applications

verify the stroke length and closing force to ensure 100% seating against the valve body

Its physical dimensions—approximately 1

and refrigerant discharge

Littelfuse 201A-AU Monitor 320819-301 contractors can maintain the operationalThe Littelfuse 201A AU is a critical 3 phase voltage monitor engineered to safeguard motors from catastrophic power line faults. This auto ranging motor protection relay operates within a wide 190480 V AC window at 50 60 Hz, making it a standard choice for HVACR contractors managing various system sizes. Using proprietary microcontroller based circuitry, the unit provides continuous phase loss protection, voltage unbalance detection, and monitoring