What the ratings mean for fit
The Siemens SENTRON 3VA1110-5EE32-0CC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection. Its headline current is 100 A at 40 °C, and it holds that rating flat through 50 °C — only dropping to 98 A at 55 °C and 91 A at 70 °C, so in a warm panel you still get nearly full capacity. The interrupting capacity is the standout: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. That means it can safely clear a fault at very high available short-circuit currents without upstream coordination issues — critical for transformer-secondaries or large motor control centers. The breaker ships with an undervoltage release (UVR) and two auxiliary switches HQ factory-installed. The UVR trips the breaker when control voltage drops below a threshold — common on safety circuits or emergency-stop chains where loss of control power must open the main contacts. The auxiliary switches provide status feedback (open/closed/tripped) to a PLC or indication lamp.
Panel integration and footprint
Dimensions are 130 mm height, 76.2 mm width (3 inches), and 70 mm depth. The 3-inch width is standard for 3-pole MCCBs in this class — it fits a standard panel cutout or DIN-rail adapter without surprises. Depth of 70 mm means it clears most shallow enclosures, but verify gland-plate clearance if the breaker sits near the back wall. Rated insulation voltage is 800 V, so it's suitable for 480/277 V and 600 V systems with margin. Maximum power loss is 27.5 W — factor that into panel thermal calculations if the enclosure is sealed or tightly packed.
What's on the nameplate
The supplied basic switch is order code 3VA11105EE320AA0. The breaker includes an undervoltage release (UVR) and two auxiliary switches HQ — no communication function, no voltage trigger, no ground-fault monitoring. Trip indicator is not fitted. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.