Siemens 3VA2063-5HN36-0DH0 — SENTRON MCCB for Line Protection
The Siemens 3VA2063-5HN36-0DH0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across its full operating range from -25 °C to 70 °C, with no derating needed up to that ambient ceiling. It carries a 187 kA interrupting capacity at 240 V, dropping to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — these figures govern the available fault current the breaker can safely clear without upstream coordination failure. Designed for line protection (not motor or feeder), this 3-pole unit includes an undervoltage release (UVR) and a trip indicator for visual fault status. The auxiliary switch complement is two auxiliary switches plus one trip alarm switch (HQ type).
Panel Fit & Mounting Dimensions
The MCCB measures 86 mm deep, 105 mm wide, and 181 mm tall. These dimensions determine the DIN-rail or backplate footprint inside the enclosure — verify clearance for the 181 mm height against the panel door and busbar routing. Maximum power loss is 7.9 W, which factors into enclosure thermal rise calculations, especially in sealed or high-density panels.
Key Ratings & What They Mean for Your BOM
The 63 A continuous rating holds flat from -25 °C to 70 °C ambient — no derating curve to manage in warm enclosures. The 756 A maximum/minimum current entry reflects the breaker's withstand and making capacity, not a continuous setting. The 187 kA interrupting capacity at 240 V is the highest short-circuit rating on this breaker; at 690 V it drops to 3 kA. Select this breaker where the available fault current at the installation point does not exceed these per-voltage limits.