The Siemens 3VA2063-5HN36-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current across its full operating temperature range from -25 °C to 70 °C, with no derating needed up to 70 °C. It's a 3-pole unit fitted with the ETU350 electronic trip unit, designed for line protection in distribution panels and motor control centers. The interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V — so it handles high-fault scenarios common in industrial switchgear without cascading upstream.
Trip unit and selectivity
The ETU350 electronic trip unit gives you adjustable overload and short-circuit protection curves, which matters for coordinating with downstream breakers in a selective coordination study. Insulation voltage is rated 800 V, so it's comfortable in 480 V and 600 V class systems. Power loss runs 5.4 W maximum — negligible for panel heat budgeting but worth noting if you're packing many breakers in a sealed enclosure.
Mounting and fit
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — standard SENTRON 3VA footprint for a 63 A frame. Front protection is IP40, meaning it's splash-proof from the front but not sealed against hose-down; keep it inside a rated enclosure for wet environments. No undervoltage release, no ground-fault monitoring, no communication module on this variant — it's a straight line-protection breaker, no frills.