What this MCCB is and where it fits
The Siemens 3VA1110-6EF36-0BC0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in distribution panels. It's a 3-pole unit rated 100 A continuous at 40 °C, with a breaking capacity of 220 kA at 240 V AC — that's the short-circuit current it can safely interrupt at that voltage level, which matters for fault clearing in high-fault-capacity installations like industrial mains or transformer secondaries. Rated insulation voltage is 800 V, so it's comfortable in 480/600 V class panels. The breaker carries an undervoltage release (UVR) as standard — that's the auxiliary release that trips the breaker when supply voltage drops below a threshold, common in safety circuits or emergency-stop chains where you want the load isolated on power loss.
Breaking capacity and derating — what the numbers mean for your panel
Breaking capacity drops as voltage rises: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V and 690 V. That 17 kA at 690 V is the limiting figure for most 600 V class industrial panels — verify your available fault current at the point of installation doesn't exceed that. The breaker is rated for use on 50/60 Hz systems. Current rating holds at 100 A from 40 °C through 50 °C ambient, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. If your panel runs hot — say near a drive cabinet or in a non-conditioned enclosure — factor that derating into the load schedule. Maximum power loss is 27.5 W, which contributes to enclosure heat rise.
Physical fit and integration
Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. That's a standard 3-pole MCCB footprint — it mounts on a DIN rail or directly to a backplate. The 70 mm depth is shallow enough for most 200 mm deep enclosures; check gland-plate clearance if you're back-panel mounting with cables exiting behind the breaker. The breaker comes with two auxiliary switches (HQ design) and the undervoltage release pre-installed. No communication function, no ground-fault monitoring — this is a straightforward line-protection device, not a smart breaker. The supplied basic switch order code is 3VA11106EF360AA0, which is the core switching mechanism inside the assembly.