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The Watts 0590716 (Series FV-4M1) is a heavy-duty 1/4 inch automatic air vent designed for high-performance hydronic heating systems
Key Benefits for Technicians Optimized Contact Material: High-grade silver alloy contacts reduce resistance and prevent pitting during high-load switching
the automatic reset functionality restores the circuit without manual intervention
Enhanced Thermal Stability: Built with premium materials to resist internal heat buildup
Engineered for industrial HVACR control systems
York S1-3500-377P/A Circuit Breaker The Watts 0590716 (Series FV-4M1)As a field technician, you know that a tripped or failing York S1 3500 377P A Circuit Breaker is more than a nuisance; its a critical failure point for high draw equipment like electric furnaces and package units. This 60 Amp 2 pole breaker is a genuine HVAC OEM replacement part engineered specifically for 120 240V single phase electrical systems. Rated for 60A service, it monitors both hot legs to ensure balanced protection and immediate interruption
