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480/277VAC are Circuit Protection Molded Case Circuit Breakers

QS2100H - Siemens - Main Circuit Breaker Type_ MBKB Product Description - GBH3080 -Siemens Low Voltage Residential Circuit Breakers Main Breakers Type Qs Breakers Are Circuit Protection Load Center Mains, Feeders, And Miniature Circuit Breakers. Type: Qsh Application: Electrical Distribution Standard: Ul 489 Voltage Rating: 120 240V Amperage Rating: 100A Trip Range: Thermal Magnetic Interrupt Rating: 22 Aic Number Of Poles: 2P