This 2-pack bundle contains one 15-amp and one 20-amp Siemens type QP single pole circuit breaker. Both thermal-magnetic circuit breakers provide overload and short circuit protection for your home's electrical system by cutting power if excess current flows over the wire's rating. With easy plug-in connections for Siemens enclosures and the time-saving Insta-wire feature, these breakers complement Siemens panels. The 15-amp handles up to #14-6 AWG Cu/Al wires while the 20-amp supports the same wire range. Their 10,000 AIC interrupting rating allows them to break high short circuit currents safely. Used together, they enable protecting separate 120V branch circuits in a Siemens panel against electrical faults. The different amp ratings let you tune protection to your circuits' load.