QF220A legacy-fit profile: Siemens QF220A is a 20-amp, two-pole personnel-protection GFCI for 120/240-volt systems. It combines QP-family plug-in mounting with a panel-neutral pigtail, so its electrical connections matter as much as its current rating.
QF220A specifications
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Manufacturer reference: US2:QF220A
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Current and poles: 20A, two pole
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System voltage: 120/240VAC
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Interrupting capacity: 10kA
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Ground-fault level: Class A, 5mA designation
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Construction: QPFB GFCI, plug-in with pigtail
Lifecycle and successor note
Siemens identifies this reference as being obsoleted and points to US2:Q220GF. That catalog guidance does not replace a panel-label and circuit review, and the newer number should not be promised as an automatic substitute.
Application checkpoint
Verify the listed panel family, required two-pole GFCI function, load-neutral wiring, conductor terminals, and fault-current limit before installation. QF220A does not add AFCI protection. Connection and testing belong with a qualified electrician following the product instructions and current code.