Features. Home line 20 Amp single-pole plug-on-neutral combination AFCI circuit breaker. To help further save our customers time and money, the Square D brand CAFI circuit breakers are now equipped with time-saver diagnostics. Innovative neutral connection design leads to fewer connections and faster installation, no pigtails which frees up gutter space. Compatible with Home line series 4 and newer load centers only. Rated for 120 VAC