The Siemens 3VA1010-2ED42-0HC0 is a 4-pole IEC frame 100 circuit breaker rated at 100 A continuous current with a breaking capacity of 16 kA at 415 V (switching capacity class B). This puts it squarely in the system-protection role for distribution panels where the available fault current at the bus is moderate — think secondary switchgear or sub-distribution boards fed from a larger upstream breaker. The 16 kA Icu at 415 V means it can safely interrupt a fault up to that level without welding contacts or cascading failure into the bus; coordination studies for selective tripping should start here.
What the ratings mean for fit
The TM210 thermal-magnetic trip unit is fixed at Ir = 100 A (overload) and Ii = 10 × In = 1000 A (short-circuit). The non-adjustable overload means this breaker is sized for a specific load — you cannot dial it down to protect a smaller conductor. The instantaneous pickup at 1000 A is fast enough to clear a bolted fault before let-through energy damages downstream components, but it is not a selective (short-time-delay) trip; if you need zone selectivity, you step to the electronic trip versions in the 3VA1 family. The N-conductor is unprotected on this variant, which is standard for 3-phase 3-wire systems where the neutral is not expected to carry fault current. If your installation requires neutral protection (e.g., 4-wire distribution with high harmonic content), this is not the right order code. The shunt release (STL) operates on 12-30 V DC or 24 V AC 50/60 Hz — a wide DC range that covers common 24 V control voltages, including battery-backed supplies. The 2 HQ auxiliary switches provide status feedback for remote monitoring or PLC interlocking.
Integration notes
Lug terminals accept standard power conductors; shunt release wiring lands on accessory terminals. Mounts on DIN rail or panel-mount via the 3VA1 frame's integral clip.