Answer
Apr 28, 2026 - 09:30 AM
The primary differences are size and mounting style:
A Frame Breakers: These are smaller and fit into a round cutout. They typically use xxxx terminals for wire connections. The max size is 50 Amps
C Frame Breakers: These are larger, fit into a rectangular cutout, and are designed for higher current loads. They generally use a nut and bolt (stud) connection for wires. The max size for a single breaker is 100 amps.
A Frame Breakers: These are smaller and fit into a round cutout. They typically use xxxx terminals for wire connections. The max size is 50 Amps
C Frame Breakers: These are larger, fit into a rectangular cutout, and are designed for higher current loads. They generally use a nut and bolt (stud) connection for wires. The max size for a single breaker is 100 amps.
