The Siemens SENTRON 3VA1110-4EE36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current at 40 °C. It's designed for line protection, meaning it sits at the incoming feed of a distribution panel or as a main breaker in a sub-panel, protecting downstream cables and busbars against overloads and short circuits. Breaking capacity is the headline spec here: 121 kA at 240 V AC, 75.6 kA at 415 V, and still 52.5 kA at 440 V. That's a high-interrupting rating for a 100 A frame — it handles utility-level fault currents without needing a current-limiting fuse upstream. At 690 V it still clears 11.9 kA, which covers most industrial motor-drive bus faults. The overcurrent release is a TM220 thermal-magnetic type — fixed thermal and magnetic trip settings, no electronic adjustment. That keeps it simple and reliable for standard distribution duty; you don't need a screwdriver to dial in curves for a motor start, but for a feeder breaker it's exactly what you want.
Thermal derating and panel fit
Current rating holds flat at 100 A from 40 °C up to 50 °C ambient inside the enclosure. Above that it derates: 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, a packed MCC with drives below — factor that 9 A drop at the top end. The breaker itself is rated for operation up to 70 °C ambient. Dimensions are 130 mm tall, 76.2 mm wide, 70 mm deep. That's a standard 3-pole MCCB footprint — it fits Siemens SENTRON 3VA mounting bases and busbar adapters without surprises. IP40 on the front means it's protected against tools and wires >1 mm, but not against water ingress; mount it inside a sealed enclosure if the environment is wet or dusty. Maximum power loss is 25 W at rated load. That's the heat it dumps into the enclosure — for a single breaker it's manageable, but in a multi-breaker panel you'll want to check the thermal budget if you're packing several 100 A frames side by side.
Lifecycle and sourcing
Insulation voltage is rated at 800 V, which gives headroom for 690 V systems and covers the common 480/277 V and 400/230 V industrial distributions. The 3VA series is widely used across European and North American panels; UL/CSA listings are standard for the family, though the specific listing should be confirmed at the nameplate.