Line protection with ETU560 — 250 A continuous, 242 kA interrupting
The Siemens SENTRON 3VA2225-6JQ32-0AD0 is a 3-pole molded case circuit breaker rated for line protection, carrying a continuous current of 250 A at 40 °C ambient — the same rating holds through 50 °C, then derates to 238 A at 55 °C and 200 A at 70 °C. The ETU560 electronic trip unit handles the overcurrent release; this variant ships with three HQ auxiliary switches and no undervoltage or shunt release fitted. Interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 6 kA at 690 V — figures that place it in the high-fault tier for industrial distribution panels where SCCR headroom matters. The 800 V rated insulation voltage (Ui) supports 690 V line-to-line applications with margin.
Panel fit and auxiliary complement
Dimensions are 105 mm wide × 181 mm high × 86 mm deep — a standard SENTRON 3VA frame size that drops into existing 3VA panel cutouts and bus-bar arrangements without re-drilling. The three HQ auxiliary switches provide status feedback for PLC or SCADA inputs; the breaker itself has no trip indicator or voltage trigger, so the aux contacts carry the signaling load. Communication function is built in, though the specific protocol is not detailed in this listing — expect compatibility with SENTRON communication modules for power monitoring. The front face carries IP40 protection; the body is not rated for washdown environments.