The 3VA1125-6EF42-0AA0-ZD00: This is a 4-pole IEC frame 160 circuit breaker with a 25 A thermal-magnetic trip unit (TM240, ATAM). For a 415 V distribution panel, that puts it in the high-capacity class (class H in Siemens' own grading), suitable for installations with high prospective fault current — think industrial switchboards close to a transformer or a large motor control center. The overload protection is adjustable from 18 A to 25 A (Ir), and the short-circuit pickup (Ii) is set between 6.4 and 12.8 times In — so at the 25 A setting, that's 160 A to 320 A magnetic trip. That range lets you coordinate with downstream branch breakers or motor starters.
Siemens 3VA1125-6EF42-0AA0-ZD00 Circuit Breaker, 70kA @ 415V
MPN3VA1125-6EF42-0AA0-ZD00
Siemens 3VA1 IEC frame 160, breaking capacity class H, Icu=70kA @ 415V, 4-pole, line protection TM240, ATAM, In=25A, overload protection Ir=18A...25A, short-circuit protection Ii=6.4...12.8 x In, N conductor unprotected, nut keeper kit for DC Power OEM in China.
Source DocumentedChannel stated on listing & quote
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Product details
Frequently asked questions
Where can I buy the 3VA1125-6EF42-0AA0-ZD00?
This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm delivery commitment.
What is the breaking capacity of this breaker?
The Icu is 70 kA at 415 V AC, which is the class H breaking capacity in the Siemens 3VA1 IEC frame 160 range.
What is the adjustable trip range on the 3VA1125-6EF42-0AA0-ZD00?
Overload protection (Ir) adjusts from 18 A to 25 A. Short-circuit protection (Ii) adjusts from 6.4 to 12.8 times In — at the 25 A setting, that's 160 A to 320 A magnetic trip.
MPN
3VA1125-6EF42-0AA0-ZD00