Breaking capacity is the headline spec here: 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. The 100 A rating holds steady 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.
Trip unit and auxiliary contacts
The ETU320 is an electronic overcurrent release with no undervoltage release, no voltage trigger, no phase failure detection, and no communication function — it is a standalone thermal-magnetic replacement with adjustable trip settings. Mechanical endurance is rated at 20,000 operations — typical for an MCCB in a distribution role where it sees infrequent switching. Maximum power loss is 10 W, which factors into thermal management inside a sealed enclosure.
The 3VA2110-5HL36-0AJ0 measures 86 mm deep, 105 mm wide, and 181 mm tall — a 3-pole MCCB footprint that fits standard Siemens 3VA panel cutouts and busbar arrangements.