Overview
The Siemens QF120A is a 20 A, 120 VAC, single-pole Class A ground-fault circuit interrupter with plug-in mounting. The QPF2-family breaker provides personnel-protection GFCI sensing together with thermal-magnetic overload and short-circuit protection and a 10 kA interrupting rating.
Key Features
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Protection: Class A GFCI protection is designed for a nominal 5 mA ground-fault trip level, while the thermal-magnetic breaker protects against sustained overloads and short circuits.
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Installation: The plug-in breaker uses box-lug load connections and a neutral lead for compatible Siemens load centers.
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Compatibility: Use only in Siemens load centers listed for QPF2 plug-in GFCI breakers; verify the panel label before installation.
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Performance: Rated 20 A, 1 pole, 120 VAC and 10 kAIC for personnel ground-fault protection.
Specifications
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Model: Siemens QF120A
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Electrical rating: 20 A, 1 pole, 1 phase, 120 VAC
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Interrupting rating: 10 kAIC
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Mounting and connection: QPF2 plug-in with box-lug load connection and neutral pigtail
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Conductor range: 14–8 AWG
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Temperature and certifications: 40°C ambient rating; UL 489; UL 943; CSA certified; HACR rated
Common Applications
- Bathroom, garage, outdoor and similar 20 A branch circuits where Class A GFCI protection is required.
- Residential service replacement in a compatible Siemens load center.
- Exact-model replacement where the panel schedule specifies QF120A.
