Siemens AG 3VA5222-5EC31-0AA0 Circuit Breaker

Siemens 3VA5222-5EC31-0AA0 is a 3-pole molded‑case circuit breaker from the 3VA5 UL frame, rated In 225 A and designed for operation up to 600 V AC. It uses a TM230 FTAM trip unit to provide thermal‑magnetic protection with overload set at 225 A and fixed short‑circuit protection in the 5–10 × In range, delivering a class M breaking capacity of 35 kAIC at 480 V. The device supports up to 600 V operation and offers electrical endurance of about 8,000 switching cycles at 380/415 V (50/60 Hz) and around 4,000 cycles at 600 V per pole. Neutrals are upgradeable/retrofittable for configurable protections. This unit is intended for robust industrial power distribution, providing reliable protection for feeders in electrical panels and switchgear; it combines a compact 3‑pole design with a high short‑circuit rating to help protect downstream equipment and wiring while offering predictable, code‑compliant tripping behavior.