Siemens 3VA2 series, IEC frame 400, motor protection circuit breaker, breaking capacity class M Icu=55kA @ 415V, 3-pole, ETU550M LSI trip unit, In=250A, overload protection IR=100-250A, busbar connection.
The ETU550M electronic trip unit provides LSI protection (long-time, short-time, instantaneous) with an adjustable overload pickup IR from 100 A to 250 A, and short-circuit protection ISD adjustable 1.2–15× In. The instantaneous pickup II also spans 3–15× In, giving the engineer room to coordinate with downstream contactors and overload relays.
The breaking capacity class M gives Icu=55kA at 415 V AC, suitable for high-fault industrial distribution.
It uses the ETU550M electronic trip unit with LSI protection (long-time, short-time, instantaneous) and adjustable overload pickup IR from 100 A to 250 A.
This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time.
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