The Siemens 3VA9467-0HC20 is a stored energy motor operator (SEO) accessory within the SENTRON line, designed specifically for the 3VA23 and 3VA24 molded-case circuit breaker frames. It provides remote electrical charging of the breaker's spring mechanism, enabling closing and opening commands from a control system without requiring an operator at the panel.
Control supply and timing
The operator accepts a rated control supply voltage of 42 to 60 V AC at 60 Hz, or the equivalent DC range. Its operating apparent power is 300 VA. The typical make time is 0.08 s and the break time is 5 s — the stored-energy mechanism charges quickly and holds the spring, then releases on command. These timing figures matter for coordination studies: the 5 s break time is the interval for the spring to discharge after the trip signal, not the arc-extinction time of the breaker itself.
Physical fit in the panel
The 3VA9467-0HC20 measures 137.6 mm wide, 127.4 mm high, and 159 mm deep. It mounts directly onto the 3VA23 or 3VA24 breaker, not on a separate DIN rail — the depth is the projection from the breaker face. The stripped length for the control wiring terminals is 7 mm, per the spring-cage termination spec.