Overview
The Siemens BA120AFCH is a 20 amp, 120 volt, single-pole bolt-on combination AFCI circuit breaker with a high 22 kA interrupting rating. It combines thermal-magnetic overcurrent protection with combination arc-fault detection for compatible Siemens commercial distribution equipment.
Key Features
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Safety: Combination AFCI electronics detect both parallel and series arcing conditions.
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Installation: Bolt-on mounting provides a secure connection in compatible Siemens panels; box-lug and screw terminals support branch wiring.
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Compatibility: Type BAFH2 breaker for Siemens equipment specifically listed for the BAFH2 bolt-on family.
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Performance: Rated 20 A, 1 pole, 120 V AC, and 22 kA interrupting capacity.
Specifications
- Manufacturer part number: BA120AFCH
- Official type / series: BAFH2
- Current rating: 20 A
- Voltage rating: 120 V AC
- Poles / phase: 1 pole / 1 phase
- Protection: combination AFCI, thermal-magnetic
- Mounting: bolt-on
- Wire range: 14–8 AWG copper; 12–8 AWG aluminum
- Temperature calibration: 40°C
- Interrupting rating: 22 kA
- Standards / markings: UL 489; UL 1699; HACR; SWD
Common Applications
- 20 A branch circuits requiring combination AFCI protection in compatible bolt-on Siemens panels.
- Commercial or institutional distribution equipment specifying Type BAFH2 breakers.
- Panel maintenance replacing the exact BA120AFCH catalog number.
- Systems requiring a higher 22 kA fault-interrupting rating.
