63 A MCCB with ETU320 — interrupting capacity and trip unit fit
The Siemens 3VA2163-6HL36-0CA0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C, with the ETU320 electronic overcurrent release. Its interrupting capacity reaches 242 kA at 240 V and 187 kA at 415 V, per the datasheet — figures that govern fault-clearing capability in high-available-fault-current distribution panels. The ETU320 provides adjustable long-time, short-time, and instantaneous protection, plus ground-fault alarm or trip when configured with the optional module. Rated insulation voltage is 800 V, and the breaker carries a maximum power loss of 6.5 W. The operating temperature range spans -25 °C to 70 °C, with the current derating curve starting at 55 °C — at 70 °C the continuous rating drops to 53.55 A. Storage limits extend from -40 °C to 80 °C.
Undervoltage release and auxiliary trip integration
This MCCB ships with an undervoltage release (UVR) as the auxiliary release design, order code 3VA9608-0BB24 for the integrated auxiliary trip. No auxiliary contact version is included on this variant — if status feedback to a PLC or indication lamp is required, a separate auxiliary switch module must be ordered and installed. The breaker does not include a voltage trip or phase failure detection function, per the spec sheet. The basic switch itself is the 3VA2163-6HL36-0AA0. The unit has no communication function and no ground-fault monitoring version. Trip indicator is not present on this order code — visual trip status must be inferred from handle position or via the optional auxiliary contacts.
Dimensions and panel fit
Physical dimensions: 105 mm width, 181 mm height, 86 mm depth. The 105 mm width is standard for a 3-pole SENTRON 3VA2 frame — it occupies three 35 mm DIN-rail module spaces. The 86 mm depth includes the handle and rear arc-chamber protrusion; verify clearance behind the mounting plate when the breaker is in the tripped position.