What this 3VA2110-5JQ32-0CC0 does on the line
The Siemens 3VA2110-5JQ32-0CC0 is a 3-pole molded case circuit breaker from the SENTRON 3VA series, configured for line protection with an ETU560 electronic trip unit. Its rated continuous current Iu is 100 A, and it carries a full-rated current up to 50 °C — at 55 °C it derates to 96.25 A, at 60 °C to 92.5 A, at 65 °C to 88.75 A, and at 70 °C to 85 A. The interrupting ratings are where this breaker earns its panel space: 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V. That 187 kA at 240 V means it handles high-fault utility feeds without cascading upstream — a genuine high-interrupting-capacity device for main or tie breaker positions. The integrated undervoltage release (UVR) and the two HQ auxiliary switches provide control interface for safety circuits and status feedback. The ETU560 trip unit provides adjustable long-time, short-time, instantaneous, and ground-fault protection (summation current formation on L-conductor). It includes a communication function — for PROFIBUS or PROFINET via the 3VA communication modules — so it fits into a digital switchgear scheme where you want trip data and remote operation.
Panel fit and physical constraints
This 3VA2110-5JQ32-0CC0 measures 105 mm wide, 181 mm high, and 86 mm deep. The 105 mm width is the standard 3-pole SENTRON 3VA frame — it occupies three 35 mm DIN-rail modules. Rated insulation voltage is 800 V, and maximum power loss is 12.5 W, which matters for thermal management inside a sealed enclosure. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Latching endurance is rated at 20,000 operations. The trip indicator is not present on this variant, so fault status relies on the auxiliary switches or the communication interface.