Siemens SENTRON 3VA2163-5HL42-0AA0 — 63 A MCCB, Line Protection, ETU320 Trip
The Siemens SENTRON 3VA2163-5HL42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, designed for line protection in distribution panels. It carries an interrupting capacity of 187 kA at 240 V AC, derating to 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V — so at typical 400 V class supply voltages it clears faults up to 121 kA without cascading upstream. The electronic trip unit (ETU320) provides adjustable overload and short-circuit protection curves, making this breaker suitable for feeder circuits where coordination with downstream devices is required. Rated insulation voltage is 800 V, and the breaker dissipates a maximum of 4 W at rated load — negligible heat for panel thermal budgeting. The front face carries IP40 protection, meaning it is protected against tools and small solid objects but not sealed against moisture; mount it inside a suitable enclosure for washdown or outdoor environments. Operating temperature range spans -25 °C to 70 °C, with storage from -40 °C to 80 °C. Dimensions are 181 mm height, 140 mm width, and 86 mm depth — a standard footprint for a 4-pole frame in this class. The breaker does not include an undervoltage release, ground-fault monitoring, or communication function; it is a straight line-protection device with the ETU320 as the only intelligent element.
Panel Integration & Mounting
The 3VA2163-5HL42-0AA0 mounts on a DIN rail or can be screw-fixed to a backplate. The 140 mm width occupies roughly 5.5 inches of rail space for the 4-pole frame. Spring-cage terminals accept copper conductors sized for the 63 A rating; verify lug torque per the installation instructions. The IP40 front face means the breaker is suitable for enclosed panel mounting — no additional gasketing required inside a standard IP54 or higher enclosure.