The Siemens 3VA1140-6EF32-0AA0-ZD00 is a 3-pole IEC frame 160 molded-case circuit breaker with a 70 kA interrupting capacity at 415 V (breaking capacity class H). The thermal-magnetic trip unit is a TM240 ATAM, set at In = 40 A, with adjustable overload protection (Ir) from 28 A to 40 A and fixed short-circuit protection (Ii) at 5 to 10 times In. The Ir adjustment lets you fine-tune the continuous current rating to match the downstream cable or load without swapping the breaker body. This variant includes a nut keeper kit and is designated for a DC Power OEM in China — the nut keeper prevents hardware loosening under vibration in power-conversion cabinets. The breaker itself is standard 3VA1 platform, so it mounts in the same Siemens panelboard and distribution board footprints as other 3VA frame-160 units.

Siemens 3VA1140-6EF32-0AA0-ZD00 Circuit Breaker, 70kA @ 415V
Siemens 3VA1 IEC frame 160, 3-pole circuit breaker, breaking capacity class H Icu=70kA @ 415V, TM240 ATAM, In=40A, overload Ir=28A...40A, short-circuit Ii=5...10 x In, nut keeper kit for DC Power OEM in China.
Product details
Frequently asked questions
What is the breaking capacity of this breaker?
The 3VA1140-6EF32-0AA0-ZD00 has a breaking capacity of 70 kA at 415 V (IEC class H), which means it can safely interrupt fault currents up to 70,000 amps at that voltage.
What are the adjustable trip settings?
Overload protection (Ir) is adjustable from 28 A to 40 A, and short-circuit protection (Ii) is fixed at 5 to 10 times the rated current In (40 A), so Ii ranges from 200 A to 400 A.
Where can I buy 3VA1140-6EF32-0AA0-ZD00?
This part is sourced to order against an RFQ through independent distribution channels. Submit a request for quote to confirm current availability and pricing.