What this MCCB is and what it does
The Siemens SENTRON 3VA2110-8JP36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current, designed for line protection in distribution panels and industrial switchgear. It carries a breaking capacity of 440 kA at 240 V AC, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V — figures that tell you it handles high-fault-current scenarios without cascading failure upstream. The ETU550 electronic overcurrent release gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves, so selectivity coordination with downstream breakers is achievable.
What the ratings mean for fit
The 100 A continuous rating holds flat across the entire ambient range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel thermal budgeting. The 800 V rated insulation voltage means it can be used on 480/277 V and 600 V systems with margin. IP40 on the front is typical for enclosed panel mount; the breaker itself is not intended for washdown environments. Power loss is 7.7 W maximum, so heat dissipation inside a sealed enclosure is manageable but should be accounted for in the thermal calculation.
Panel integration notes
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises. The ETU550 trip unit supports communication, so you can pull event logs and settings via the SENTRON software suite. No undervoltage release or shunt trip is included; if you need remote tripping, those accessories are ordered separately and install into the breaker's accessory slot.