Square D A1B115U is a 1-pole, 15-amp molded‑case circuit breaker from Square D's A1B series, built for bolt‑on mounting in panels that accept A1B breakers. It is rated for 120 V and offers a 10 kA interrupting rating at 120 VAC, providing overcurrent protection for individual circuits. The device's 15 A nominal rating and molded‑case construction align with Square D's A1B bolt‑on family for use in compatible panels.
