The Siemens SENTRON 3VA2010-5JQ32-0AG0 is a 3-pole molded case circuit breaker (MCCB) rated for continuous current of 100 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed as the temperature climbs, which simplifies panel design in warm enclosures. It's designed for line protection, meaning the trip curve and short-time delay are set to protect feeders and downstream cables, not motor or generator circuits. The interrupting capacity is 187 kA at 240 V AC, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3 kA at 690 V — so at typical 480 V distribution voltages you've got serious fault-current headroom. A built-in communication function means this breaker can talk to a higher-level control system for remote monitoring and trip indication — useful for a plant-floor engineer who wants to know which feeder tripped without walking the panel line.
The 3VA2010-5JQ32-0AG0 measures 181 mm high, 105 mm wide, and 86 mm deep. That 105 mm width for a 3-pole frame is a standard footprint for SENTRON 3VA breakers in this rating class, so it drops into existing panel layouts designed for the 3VA family without re-drilling the mounting plate or re-routing bus bars. It ships with one auxiliary switch and one trip alarm switch (HP type) pre-installed — the auxiliary tracks the breaker's open/closed state, the alarm signals when it trips on fault. That covers the two most common signal needs without adding a separate accessory module. The breaker includes a trip indicator (mechanical flag) that shows whether it tripped on overload or short circuit, even when the handle is reset. That saves a technician's time during fault diagnosis — you see the flag, you know it wasn't a manual open. Maximum power dissipation is 13.5 W — modest for a 100 A frame, so heat buildup in a dense panel is manageable. Ambient operating range is -25 °C to 70 °C; storage range -40 °C to 80 °C.
The 3VA2010-5JQ32-0AG0 is the 100 A frame with communication and a 1 auxiliary + 1 trip alarm switch complement. A close sibling in the same 3VA family, the 3VA2116-5JP32-0AE0, is a 160 A frame — physically larger (wider footprint) to handle the higher continuous current. If your BOM calls for 100 A protection, this is the correct frame; the 160 A sibling won't fit the same panel cutout or bus spacing without rework.
The ground-fault monitoring version uses summation current formation on the L-conductor, which means it measures the vector sum of phase currents to detect leakage to ground. This is a built-in function on this variant — no external GF relay needed for that monitoring role. The basic switch (the internal switching mechanism) is listed as 3VA20105JQ320AA0 — that's the core assembly inside the molded case. The order code 3VA2010-5JQ32-0AG0 is the fully assembled, tested, and labeled breaker ready for panel installation.