Schneider Electric AIB330 Molded Case Circuit Breaker

Schneider Electric's Square D AIB330 Molded Case Circuit Breaker is a 30 A, 3‑pole device designed for three‑phase protection in electrical panels. It is rated for 240 VAC and supports a 125–250 VDC range for DC applications, with long stab terminals that provide a secure, durable connection. This molded‑case circuit breaker protects three‑phase circuits such as motors and transformers from overloads by interrupting current when the preset limit is exceeded, helping prevent damage to downstream equipment. The AIB330's three‑pole configuration ensures simultaneous disconnection of all three phases, enabling safe shutdown of the protected circuit, and it is part of Schneider Electric's Square D family of MCCBs for use in standard low‑voltage installations.