Siemens B115AFCH AFCI Miniature Circuit Breaker

This bolt-on breaker is designed for use in Siemens P1, P2, P3, P4, and P5 panelboards. It is part of the BL family and requires a bolted connection to the bus, meaning it will not fit in standard plug-on residential load centers.

This breaker features a pigtail neutral connection. The attached coiled white wire must be routed and connected directly to the panel neutral bus bar for the arc fault detection circuitry to function properly.

As a Combination Arc Fault Circuit Interrupter (CAFCI), it detects and mitigates both parallel arcs (line-to-line or line-to-ground) and series arcs (loose connections within a single line). This provides comprehensive protection required by the National Electrical Code (NEC) for specific branch circuits.

The H in the B115AFCH catalog number indicates a high interrupting rating. While the standard B115AFC is rated for 10kAIC at 120V, the B115AFCH provides a 22kAIC rating for systems with higher available fault current.

The load lugs accept 14 to 10 AWG copper conductors or 12 to 10 AWG aluminum conductors. Always verify the specific torque requirements printed on the side of the breaker before terminating the wire.