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Siemens 3RT1617-1AR63 — Contactors

Siemens 3RT1617-1AR63 Capacitor Contactor, 20 A, AC-6, 12.5

MPN3RT1617-1AR63

Siemens SIRIUS 3RT1617-1AR63 capacitor contactor, AC-6, 12.5 kVAr / 400 V, 400 V AC 50/60 Hz, 20 A rated, 3-pole main contacts, 1 NO + 1 NC auxiliary, screw terminals, IP20.

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

3RT1617-1AR63 — Control & Coil
ParameterValue
Rated value @ 50 Hz400 ... 400 V
3RT1617-1AR63 — Contacts & Poles
ParameterValue
Main NO contacts3
3RT1617-1AR63 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Side-by-side mountingYes
3RT1617-1AR63 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
3RT1617-1AR63 — Mechanical
ParameterValue
Width45 mm
Height110 mm
Depth110 mm

Product details

The Siemens 3RT1617-1AR63 is a capacitor contactor from the SIRIUS family, designed specifically for switching capacitor banks in power factor correction (PFC) applications. It is rated for AC-6 duty at 12.5 kVAr at 400 V, meaning it handles the high inrush currents and transient stresses that occur when energizing a capacitor bank — a failure mode that a standard motor contactor would not survive long-term. It carries 3 NO main poles and 1 NO + 1 NC auxiliary contact block, all terminated via screw-type terminals.

This part is a phased-out product. The official successor is the SIRIUS 3RT2 series. The IP20 front and terminal protection is standard for enclosed panel installation — no washdown rating here.

Fit and integration notes

The 1 NO + 1 NC auxiliary set is enough for a basic status feedback or a discharge resistor interlock, but if more aux contacts are needed, an add-on block will increase the width.

Frequently asked questions

What replaces the 3RT1617-1AR63?

The SIRIUS 3RT2 series is the official successor. The exact order code depends on the coil voltage (400 V AC) and auxiliary contact count (1 NO + 1 NC). The 3RT2 uses a different auxiliary block interface, so verify the wiring before ordering.

Will the 3RT1617-1AR63 fit a panel designed for the 3RT1016-1AR11?

The 3RT1617-1AR63 is 110 mm deep versus 72 mm for the 3RT1016-1AR11, and 110 mm tall versus 57.5 mm. Both are 45 mm wide and mount on 35 mm DIN rail. The depth and height difference means it will not drop into the same panel space without checking clearance for the deeper body and taller profile.

What is the key rating of the 3RT1617-1AR63?

The critical rating is AC-6 duty at 12.5 kVAr at 400 V, which means it is designed for switching capacitor banks. The main contact rating is 20 A. The coil is 400 V AC, 50/60 Hz.

MPN
3RT1617-1AR63