SENTRON 3VA2 line protection MCCB — 63 A, 3-pole
The Siemens SENTRON 3VA2163-6HL36-0AG0 is a molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a rated continuous current of 63 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel loading calculations when the enclosure runs warm. Three-pole configuration, rated insulation voltage 800 V. Breaking capacity is the headline number here: 242 kA at 240 VAC, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA at 240 V tells you this breaker is built for high-fault installations — think transformer secondaries or large motor control centers where the available fault current is substantial. The drop to 3.7 kA at 690 V is typical for this class; the 690 V rating governs the high-voltage end, not the common 400/480 V range where it still holds 187 kA.
Fit and mounting — panel integration
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. That 105 mm width is the standard 3-pole MCCB footprint for this SENTRON frame size — it occupies three 35 mm DIN module slots if panel-mounted on a DIN rail, or bolts directly into a distribution board busbar system. The 86 mm depth leaves clearance for rear-connected busbars and cable glands on a standard 200 mm deep enclosure. Comes with one auxiliary switch and one trip alarm switch (HP type) pre-installed. That gives you a remote status contact for the breaker position and a separate contact that changes state only on a trip event — useful for PLC-based alarm annunciation without extra wiring. No undervoltage release, no ground-fault monitoring, no communication module on this variant.