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Siemens 3VA1220-4EF32-0KB0 — Molded Case Circuit Breakers (MCCB)

Siemens 3VA1220-4EF32-0KB0 Circuit Breaker, 200A, 36kA @ 415

MPN3VA1220-4EF32-0KB0

Siemens 3VA1 IEC frame 250 circuit breaker, breaking capacity class S, 36kA @ 415V, 3-pole, line protection TM240, ATAM, In=200A, overload Ir=140-200A, short-circuit Ii=5-10 x In, with shunt trip left 208-277V AC / 220-250V DC and 2 auxiliary switches.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Product details

What this 3VA1 breaker carries

The Siemens 3VA1220-4EF32-0KB0 is a 3-pole IEC frame 250 molded case circuit breaker in breaking capacity class S, rated for a 36 kA interrupting capacity at 415 V AC. It ships with a TM240 thermal-magnetic trip unit set for a 200 A nominal rating (In), with overload protection adjustable from 140 A to 200 A (Ir) and short-circuit protection adjustable from 5 to 10 times In (Ii). The unit includes a factory-installed shunt trip on the left side, rated 208–277 V AC 50/60 Hz and 220–250 V DC, plus two auxiliary switch changeover contacts.

The TM240 thermal-magnetic trip provides line protection for cable and bus, with the adjustable Ir band (140–200 A) letting you fine-tune overload pickup to match the downstream load without swapping the trip unit. The shunt trip on the left side accepts either AC or DC control voltage, so it can be wired into a remote emergency-stop or undervoltage-release circuit without a separate rectifier.

Frequently asked questions

What is the breaking capacity of this breaker?

The 3VA1220-4EF32-0KB0 has a rated ultimate breaking capacity (Icu) of 36 kA at 415 V AC, placing it in breaking capacity class S for the 3VA1 IEC frame 250 platform.

What trip unit and adjustments does this breaker have?

It is fitted with a TM240 thermal-magnetic trip unit. The nominal rating (In) is 200 A. Overload protection (Ir) is adjustable from 140 A to 200 A, and short-circuit protection (Ii) is adjustable from 5 to 10 times In.

What accessories are included on this order code?

This variant includes a left-side shunt trip rated 208–277 V AC 50/60 Hz and 220–250 V DC, plus two auxiliary switch changeover contacts.

Where can I buy 3VA1220-4EF32-0KB0 and how is it quoted?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here.

MPN
3VA1220-4EF32-0KB0