What the ratings mean for fit
The Siemens 3VA1110-3ED32-0AA0-ZD00 is a 3-pole IEC frame 160 molded case circuit breaker with a 100 A fixed thermal-magnetic trip (TM210). The 25 kA interrupting capacity at 415 V (breaking capacity class N) tells you it can safely clear a fault up to that level on a 400 V class distribution board without needing an upstream current-limiting fuse — that's the so-what for panel builders sizing the main breaker in a sub-distribution board feeding motor control centers or lighting panels. Overload protection is fixed at Ir = 100 A (the TM210 thermal element), and short-circuit pickup is fixed at Ii = 10 × In, so 1000 A. That means no adjustment dials to set — it's a fixed-trip variant, which simplifies BOM consistency but locks you into that 100 A rating. If the load calculation comes in at 90 A or 110 A, this isn't the breaker to spec; you'd want the adjustable thermal-magnetic version in the same 3VA1 family.
Lifecycle and sourcing reality
The description notes a nut keeper kit for DC Power OEM in China — that's a variant-specific accessory bundled at the factory. It doesn't change the electrical ratings, but if you're ordering a straight 3VA1 without that kit, verify the suffix matches your panel hardware. Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.
Integration notes
Mounts on a standard DIN rail or panel-mount via the 3VA1 frame's integral lugs. The 3-pole footprint fits a 160 A frame cutout; keep the 100 A fixed trip in mind when calculating fill factor in a distribution enclosure — the breaker's physical size is dictated by the frame, not the trip rating, so it occupies the same DIN space as a 160 A adjustable unit.