Littelfuse 201A-AU Monitor 320819-301 Its physical dimensions—approximately 1

Its physical dimensions—approximately 1

This unit is specifically engineered for R12 refrigerant applications

this OEM replacement heating element provides an essential heat source for electric heating cycles or emergency backup

With a 3/8-inch inlet and 1/2-inch outlet

and refrigerant discharge

Littelfuse 201A-AU Monitor 320819-301 Its physical dimensions—approximately 1The 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