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Siemens 3RT1627-1AL21 — Contactors

Siemens 3RT1627-1AL21 Capacitor Contactor, AC-6, 25 kVAr, 23

MPN3RT1627-1AL21

Siemens SIRIUS 3RT1627-1AL21 capacitor contactor, AC-6 rated 25 kVAr at 400 V, 230 VAC 50/60 Hz coil, 3-pole, size S0, screw terminals, IP20 front.

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

Specifications

3RT1627-1AL21 — Control & Coil
ParameterValue
Rated value @ 50 Hz230 ... 230 V
3RT1627-1AL21 — Contacts & Poles
ParameterValue
Main NO contacts3
3RT1627-1AL21 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022
Side-by-side mountingYes
3RT1627-1AL21 — Mechanical
ParameterValue
Width45 mm
Height100 mm
Depth135 mm

Product details

The Siemens 3RT1627-1AL21 is a capacitor contactor from the SIRIUS family, rated for AC-6 duty at 25 kVAr / 400 V — meaning it's built specifically for switching capacitor banks in power factor correction (PFC) panels, not general motor loads. The 230 VAC 50/60 Hz coil pulls 64 VA pick-up, 8.4 VA hold, so budget the control transformer accordingly. Three main NO poles handle the capacitor switching; one auxiliary NO contact is on board for status feedback or interlock wiring.

Integration & Panel Fit

IP20 on the front, IP00 at the terminals — the terminals are live when the contactor is installed in an open panel.

Frequently asked questions

Where can I buy 3RT1627-1AL21?

The part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no single distributor carries it as a stocked line item.

MPN
3RT1627-1AL21