The 3VA2580-5HL32-0KK0 is a Siemens 3VA2 IEC frame 1000 circuit breaker, 3-pole, with a breaking capacity class M and an Icu of 55 kA at 415 V. The ETU320 LI trip unit gives you long-time (L) and instantaneous (I) protection: overload protection Ir is adjustable from 320 A to 800 A, and short-circuit protection Ii is adjustable from 1.5 to 12 times In (the rated current of 800 A). This adjustability lets you coordinate with downstream breakers and protect a transformer or a large bus riser without nuisance tripping.
Built-in accessories
The shunt trip lets a remote emergency-stop or PLC signal open the breaker without an operator pulling the handle — useful for a safety circuit or a remote disconnect in a motor control center. The auxiliary switch provides a status contact for the panel PLC or a remote indication lamp.