Allanson 421-557 Transformer Els PW 17895 Works on all types of

Works on all types of round copper

acting as a critical safety override

allowing for specialized temperature regulation in individual zones

This transformer is a direct-fit replacement

and T2 valve bodies

Allanson 421-557 Transformer Els PW 17895 Works on all types ofThe Allanson 421 557 is a heavy duty oil burner ignition transformer engineered specifically for Arco and American Standard burners. This iron core transformer utilizes a 120V primary supply to deliver a consistent 10,000V secondary output at 23mA, ensuring a powerful arc for reliable burner ignition in demanding environments. Designed with a mid point ground configuration, the 421 557 features a high silicon steel core and large gauge copper windings