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. 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.
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.
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.
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.