What this MCCB carries — and what it doesn't
The Siemens 3VA1110-5EE32-0JA0 is a 3-pole SENTRON molded case circuit breaker (MCCB) set up for line protection — not motor or generator protection. Its rated continuous current Iu is 100 A, and it holds that rating from 40 °C through 50 °C, then derates to 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C. The interrupting ratings are substantial: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. That 187 kA figure at 240 V means it can safely clear a fault of that magnitude without the arc re-striking or the case rupturing — important for high-available-fault-current services like transformer secondaries or large busway taps. The overcurrent release is a TM220 — a thermal-magnetic unit with a fixed trip curve, not adjustable. That's typical for distribution feeder duty where coordination is set by the breaker size, not by a dial. No undervoltage release, no ground-fault monitoring, no auxiliary contacts, no communication module, and no phase-failure detection are built in. The only auxiliary release is a shunt trip (STL), which uses the separate order code 3VA9688-0BL32 for the trip coil assembly. If your BOM calls for a shunt-trip MCCB, this is the variant that has it; if you need UVR or comms, you're looking at a different suffix.
Fit and footprint — panel integration
The 3VA1110-5EE32-0JA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. That 70 mm depth is the dimension that matters for shallow backpanels or enclosures with limited clearance behind the door — it's not a deep-frame MCCB. Width at 76.2 mm (three poles on a 25.4 mm per-pole pitch) is standard for this class; it fits the SENTRON mounting base and busbar system without adapters. IP40 on the front means it's protected against tools and wires >1 mm, but not against dust ingress — it's a panel-interior device, not a standalone enclosure. The reference code per DIN EN 81346-2 is Q (switching device).