Siemens S3VA52TDN Molded Case Circuit Breaker

Siemens 3VA molded‑case circuit breaker S3VA52TDN is a three‑pole, low‑voltage protection device in the SENTRON 3VA MCCB family. Rated for systems up to 600 V, it uses a thermal‑magnetic trip to provide overload and short‑circuit protection for distribution panels and switchgear in industrial environments. The 3VA53 frame referenced in Siemens literature denotes a mid‑range breaking capacity within the 3VA line, while related variants such as the 3VA63B offer higher breaking capabilities in the same family; this product line is UL listed as molded‑case circuit breakers. Typical applications include motor control circuits, feeder protection, and general‑purpose distribution where reliable, configurable short‑circuit protection is required for three‑phase power. The design supports a three‑pole configuration, enabling robust protection of three‑phase loads, and aligns with Siemens’ broader SENTRON protection ecosystem for integration with compatible accessories and enclosures.