63 A MCCB with 242 kA interrupting capacity — line protection for high-fault panels
The Siemens 3VA2163-6HL36-0BA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C, with a breaking capacity of 242 kA at 240 V AC. That interrupting rating drops to 187 kA at 415 V and 440 V, then to 121 kA at 500 V, and 5 kA at 690 V — so the 242 kA figure is specific to 240 V service, not a blanket rating. The 3-pole unit carries an ETU320 electronic overcurrent release and an integrated undervoltage release (UVR), making it a line-protection breaker suited for main or feeder duty in high-fault-current industrial panels. Rated insulation voltage is 800 V, and the breaker's operating temperature range spans -25 °C to 70 °C, with full 63 A current carrying up to 50 °C before derating begins — at 55 °C it's 60.6 A, at 60 °C it's 58.3 A, and at 70 °C it's 53.6 A. Maximum power loss is 6.5 W. The mechanical endurance is rated at 20,000 operations. Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint for DIN-rail or panel-mount installation.