Part Number: QY-1(13)50 Manufacturer: CBI Part Series: QY-1(1 QY-1(13)50. 10kA 1 Pole 50 Amp Curve U2 Circuit Breaker. Old part number: QY-N10-1(13)50 Available to Order Quantity × 1 Item added to your Quotation Basket QY-1(13)50 CBI Your Quotation Basket Items: 2