What the interrupting ratings mean for your panel
The Siemens 3VA1110-5EF36-0AF0 is a SENTRON molded case circuit breaker (MCCB) sized for line protection in distribution panels. Its 100 A rated continuous current (Iu) holds steady from 40 °C through 50 °C — no derating needed in a typical warm cabinet — then steps down to 90 A at 70 °C, which is the upper operating limit. The interrupting capacity is the headline number here: 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 this breaker can safely clear a fault of that magnitude without rupturing — critical for high-fault installations like transformer secondaries or large motor control centers where available fault current is high. At 415 V, the 121 kA rating still puts it in the top tier for industrial MCCBs; most standard panels won't see that level, so you've got headroom for selectivity coordination downstream.
TM240 release and trip characteristics
The overcurrent release is a TM240 thermal-magnetic type — fixed thermal pickup, magnetic trip adjustable. The thermal element tracks the 100 A frame rating; the magnetic short-circuit pickup is set at the factory per the TM240 curve. The adjustable response time (tr max) goes to 1 second, which lets you fine-tune the short-time delay for selective coordination with downstream breakers. No undervoltage release, no shunt trip, no ground-fault module on this variant — it's a straight line-protection breaker with a 1 NO + 1 NC auxiliary switch and a separate trip-alarm switch (HQ configuration).
Physical fit and panel integration
The 3VA1110 frame measures 130 mm high, 76.2 mm wide, and 70 mm deep. That 76.2 mm width is a standard 3-pole MCCB footprint — three 25.4 mm pole centers — so it drops into existing SENTRON or 3VA panelboards without re-drilling. Front IP40 protection handles typical indoor panel environments; no washdown rating, so keep it inside the enclosure. The trip indicator on the front gives a visual flag for a tripped state without needing to open the door.