York S1-3500-377P/A Circuit Breaker The Watts 0590716 (Series FV-4M1)
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Description
York S1 3500 377P A Circuit Breaker The Watts 0590716 (Series FV 4M1) 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