Overload and short-circuit protection for 480 V distribution
The Siemens 3VA4135-6ED24-3AA0 is a 2-pole circuit breaker in the 3VA4 UL Frame 125 series, rated for line protection with a TM210 thermal-magnetic trip unit. Its 65 kA breaking capacity at 480 V (class H) means it can safely interrupt fault currents up to that level without upstream fuses or breakers needing to clear — critical for maintaining selectivity in a distribution panel where downstream faults must not cascade. Overload protection is fixed at 35 A (Ir = 35 A, permanently set), and short-circuit pickup is at 10× In (350 A), so it's sized for feeder circuits with moderate inrush, not motor starting.