What this MCCB is and what the ratings mean for fit
The Siemens SENTRON 3VA2110-5HN36-0CL0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, with a rated continuous current Iu of 100 A and an ETU350 electronic overcurrent release. The 100 A rating is the continuous current it carries without tripping at 40 °C ambient; it derates to 85 A at 70 °C, so panel ambient temperature directly governs the load it can protect. The interrupting ratings — 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 — define the maximum fault current it can safely clear at each voltage level. For a 415 V distribution board, the 121 kA SCCR means it interrupts faults up to that level without upstream cascading.
Integration and deployment context
The 3VA2110-5HN36-0CL0 mounts in a standard panel enclosure; its dimensions are 105 mm width, 181 mm height, and 86 mm depth. The 105 mm width is the critical dimension for multi-breaker lineup spacing on a DIN rail or mounting plate. The rated insulation voltage Ui is 800 V, which covers 480 V and 600 V class systems with margin. Latching endurance is rated at 20 000 operations. The operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C. Maximum power loss is 12.5 W, which should be factored into enclosure thermal calculations.