Siemens 3VA2163-5HN32-0DC0 — 63 A SENTRON MCCB with Undervoltage Release
The Siemens 3VA2163-5HN32-0DC0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C through 70 °C — no derating needed across that ambient span. Three poles, line-protection design, with a breaking capacity of 121 kA at 415 V AC. That interrupting rating means it clears a bolted fault up to 121 kA without rupturing, which covers most industrial service-entrance and distribution panel applications at 415 V. Show me the rating — this one holds. The breaker ships with an undervoltage release (UVR) and two HQ auxiliary switches factory-installed. The UVR trips the breaker when control voltage drops below a set threshold — standard for emergency-stop circuits and safety isolation where you want positive dropout on loss of control power. No exceptions on that safety function.
Interrupting Capacity Across Voltages
Breaking capacity varies sharply with system voltage: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V AC. The 690 V figure is low — verify your available fault current at that voltage before specifying. At 415 V the 121 kA rating gives generous headroom for most industrial switchgear lineups.
Physical Fit and Panel Integration
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. That's a standard 3-pole MCCB footprint for the 63 A frame — fits Siemens 3VA2 panel-mounting accessories and busbar systems. Max power dissipation is 6.5 W; factor that into enclosure thermal rise calculations, especially in a sealed panel.
Environmental and Storage Limits
Operating ambient -25 °C to 70 °C; storage from -40 °C to 80 °C. The storage range exceeds the operating range — handling and warehousing, not running, is what that limit governs.