The Siemens 3VA1120-5EF36-0DH0 is a 3-pole IEC moulded-case circuit breaker on the 3VA1 platform, built into the 160 A frame. The thermal-magnetic trip unit (TM240, ATAM) provides adjustable overload protection (Ir = 14…20 A) and fixed short-circuit pickup (Ii = 8…16 × In, so 160…320 A at the 20 A rating). That adjustability lets the panel builder fine-tune the overload band to the connected load without swapping the breaker body. The integrated undervoltage release (UVR, 208–230 V AC 50/60 Hz) drops the breaker open when control voltage falls below its dropout threshold — a standard requirement in safety circuits that need a fail-safe disconnect on loss of control power.
Siemens 3VA1120-5EF36-0DH0 Circuit Breaker, 55kA @ 415V, 20A
MPN3VA1120-5EF36-0DH0
Siemens 3VA1 IEC frame 160, breaking capacity class M, Icu=55kA @ 415V, 3-pole, line protection TM240, ATAM, In=20A, overload Ir=14...20A, short-circuit Ii=8...16 x In, clamp connection, undervoltage release 208-230V AC 50/60Hz, 2 aux switches HQ, 1 trip alarm switch HQ.
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Independent China distributor & sourcing agent· Listing updated Sep 2026
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Frequently asked questions
Where can I buy 3VA1120-5EF36-0DH0?
This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.
What are the key ratings of 3VA1120-5EF36-0DH0?
The breaker is rated Icu = 55 kA at 415 V AC, with a 20 A thermal-magnetic trip (adjustable overload Ir = 14–20 A, short-circuit pickup Ii = 8–16 × In). It includes an undervoltage release for 208–230 V AC, two auxiliary switches, and one trip-alarm switch.
MPN
3VA1120-5EF36-0DH0