Siemens SENTRON 3VA2463-6JQ32-0AE0 — 630 A MCCB with ETU560 Trip Unit
The 3VA2463-6JQ32-0AE0 is a Siemens SENTRON molded case circuit breaker (MCCB) rated for continuous current of 630 A at 40 °C, with a 3-pole configuration and an ETU560 electronic trip unit. It is designated for line protection — meaning it guards distribution feeders and large branch circuits against overload and short-circuit faults, not motor or generator protection. Breaking capacity is voltage-dependent: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 40 kA at 690 V. These are the maximum fault currents the breaker can safely interrupt at each voltage level — critical for verifying SCCR compliance in the panel schedule. Current rating derates with ambient temperature: 630 A at 40 °C, 600 A at 45 °C, 570 A at 50 °C, 540 A at 55 °C, 510 A at 60 °C, 480 A at 65 °C, and 450 A at 70 °C. If the breaker sits in a warm enclosure, use the derated figure for the actual load — the 630 A nameplate applies only at 40 °C ambient.
Integration — Panel Fit and Wiring
Physical footprint: 248 mm height, 138 mm width, 110 mm depth. The 138 mm width is a 3-pole frame size — verify the mounting base and busbar spacing in the existing switchboard before ordering. Depth of 110 mm includes the arc chamber and terminal covers; allow clearance for cable bending radius below the line and load lugs. Comes with 4 auxiliary switches (HQ version) for status feedback to the PLC or indication panel. No undervoltage release or voltage trigger is fitted on this variant — those are separate accessory options. Communication function is present, so the ETU560 can interface with a higher-level monitoring system via the SENTRON communication bus.
Compliance and Documentation
Rated insulation voltage Ui is 800 V, and the operating temperature range is -25 °C to +70 °C, with storage from -40 °C to +80 °C. Maximum power loss is 162 W — account for this heat dissipation in the enclosure thermal calculation. The basic switch supplied is order code 3VA2463-6JQ32-0AA0, and the integrated auxiliary trip is 3VA9608-0BB24. These are the internal sub-assemblies; the complete MCCB is the 3VA2463-6JQ32-0AE0. No phase failure detection or ground fault monitoring (summation current formation L-conductor is present) — the ETU560 handles ground fault via the external summation CT.