Siemens 3VA2063-6HN32-0AA0 — SENTRON 63 A MCCB with ETU350 Trip Unit
The Siemens 3VA2063-6HN32-0AA0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current, designed for line protection in distribution panels and industrial switchgear. Its ETU350 electronic trip unit provides adjustable overload and short-circuit protection curves, giving the site electrical engineer flexibility to coordinate with downstream breakers without swapping hardware. Breaking capacity is the headline number here: 242 kA at 240 V AC drops to 187 kA at 415 V and 440 V, then 121 kA at 500 V, and 3 kA at 690 V. That 242 kA at 240 V means this breaker handles fault currents up to utility-transformer-secondary levels — useful for main or tie positions where available fault current is high. The 63 A frame stays flat-rated across the full ambient range from 40 °C to 70 °C, so no derating curve to track in a warm enclosure.
Panel Fit and Integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard SENTRON 3VA2 frame footprint. The 86 mm depth (3.39 in) means it clears most 200 mm deep enclosures with room for rear-access wiring; verify against your gland plate and busbar clearance. IP40 front protection keeps dust out of the breaker face in panel interiors. The ETU350 trip unit has no communication function and no undervoltage release integrated — those are external accessories. No ground-fault monitoring version is built in, so if GFP is required, plan for a separate module or a different variant. Power loss is 5.4 W maximum, negligible for thermal budgeting in a multi-breaker lineup.
Environmental and Compliance Range
Operating temperature spans -25 °C to 70 °C; storage range is -40 °C to 80 °C. The insulation voltage is rated at 800 V, covering 480/600 V systems with margin. The breaker carries the standard SENTRON compliance documentation package — RoHS, REACH, and IEC/UL certifications are part of the series release.