The Siemens 3VA1110-5EF46-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated 100 A continuous at 40 °C, 4-pole, with a TM240 thermal-magnetic release. What you get is a straight MCCB for distribution or feeder duty in a 3-phase + neutral panel. The TM240 release means the thermal element is calibrated for a 240 A frame; the 100 A rating is set by the installed trip unit. That gives you headroom if you later need to uprate the breaker within the same frame — swap the trip unit, not the whole device.
This breaker delivers 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V.
Rated 100 A from 40 °C up to 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. Plan your load accordingly. The maximum power loss is 25 W, so forced ventilation may be needed in a tightly packed cabinet. The 4-pole width (101.6 mm) is standard for a 4-pole MCCB in this frame class; it fits Siemens 3VA mounting bases and busbar systems.
No phase-out notice, no last-time-buy window. This is the standard production version, not an NRND or obsolete variant.