Part Number: QY-1(13)4 Manufacturer: CBI Part Series: QY-1(1 QY-1(13)4 - 1 Pole 4 Amp Curve U2 Circuit Breaker. CBI Re-Order No. QYN18U204. Old part number: QY-N10-1(13)4. Available to Order Quantity × 1 Item added to your Quotation Basket QY-1(13)4 CBI Your Quotation Basket Items: 2