The Siemens SENTRON 3VA2010-6HN36-0DC0 is a 3-pole molded case circuit breaker rated for 100 A continuous current at 40 °C, built around the ETU350 electronic trip unit for line protection. It carries a 242 kA interrupting rating at 240 V, stepping down to 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4 kA at 690 V — so the high fault-current capability at the lower voltages is what makes this breaker a fit for high-capacity distribution panels where available fault current is substantial.
Ratings and what they mean for the panel
The 100 A rating holds flat from 40 °C through 50 °C, then derates to 96.25 A at 55 °C, 92.5 A at 60 °C, 88.75 A at 65 °C, and 85 A at 70 °C. That means in a warm enclosure — say a non-ventilated panel near a process line — you lose about 15 % of the headroom at the top of the ambient range. Plan your load margin accordingly if the breaker shares space with heat sources. Rated insulation voltage is 800 V, so the breaker is electrically rated for 690 V systems with margin. The ETU350 release handles the protection curve; no voltage trigger or phase-failure detection is built in, and there is no communication module on this variant. If you need remote monitoring or phase-loss protection, that would be a different trip unit or an add-on module. Maximum power loss is 16 W — modest for a 100 A frame, so heat buildup in a dense panel is manageable. The breaker ships with 2 auxiliary switches (HQ version) and an undervoltage release (UVR) as the auxiliary release. The UVR coil will drop the breaker if control voltage is lost, which is standard for emergency-stop or safety isolation circuits.
Lifecycle and sourcing posture
The basic switch assembly is order code 3VA2010-6HN36-0AA0, and the integrated auxiliary trip is 3VA9608-0BB25 — useful to know if you are stocking spares at the component level rather than the full breaker.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint for the SENTRON 3VA2 frame. It mounts on a DIN rail or can be screw-mounted in a distribution panel. The 86 mm depth means it clears most shallow enclosures, but check your gland-plate clearance if the breaker sits near the back wall.
What this breaker does not do
No trip indicator, no ground-fault monitoring, no communication function, and no phase-failure detection. This is a straight line-protection MCCB — overcurrent and short-circuit only, with undervoltage release as the sole auxiliary function. If your application demands ground-fault or phase-loss protection, you would add an external relay or step up to a different 3VA variant with those features built in.