Skip to main content
Log in
Siemens 3RT2038-1AF04 — Contactors

Siemens 3RT2038-1AF04 SIRIUS Power Contactor, 65 A at 480 V,

MPN3RT2038-1AF04
Active

Siemens SIRIUS power contactor, 3RT2038-1AF04, S2 frame, 65 A at 480 V AC-3, screw-type coil terminals, screw and snap-on mounting on 35 mm DIN rail.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

3RT2038-1AF04 — Identification
ParameterValue
Contactor frame sizeS2
3RT2038-1AF04 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V55 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V15 hp
Rated value @ 24 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2038-1AF04 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.37
Rated value @ 50 Hz110 V
3RT2038-1AF04 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2038-1AF04 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A (415 V, 80 kA)
Short-circuit coordination type 2, fusegG: 160A (690V,100kA), aM: 80A (690V,100kA), BS88: 125A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2038-1AF04 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715
Side-by-side mountingYes
3RT2038-1AF04 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2038-1AF04 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2038-1AF04 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth174 mm
3RT2038-1AF04 — Specifications
ParameterValue
At AC10 ... 18 ms

Product details

What the 65 A rating means for your motor circuit

The Siemens 3RT2038-1AF04 is a SIRIUS power contactor in the S2 frame size, rated 65 A at 480 V — that is the AC-3 motor-switching current, so it handles three-phase induction motors up to roughly 30 kW at 400 V without derating. The screw-type main and coil terminals (accepting 2x 0.5…2.5 mm² stranded) match standard panel wiring practice; no special lug kit needed.

The S2 frame footprint is 55 mm wide × 114 mm high × 174 mm deep.

Switching frequency and duty limits

Maximum switching rates: 700 cycles/hour at AC-1 (resistive), 500 at AC-3 (motor start/run), 350 at AC-2 (slip-ring motor), 150 at AC-4 (plugging/inching). The AC-3e rating also caps at 500 cycles/hour.

Frequently asked questions

How do I get current pricing and availability for 3RT2038-1AF04?

The 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 dimensions and mounting clearances?

The S2 frame measures 55 mm wide × 114 mm high × 174 mm deep. Required clearances: 10 mm upward, forward, and downward; 6 mm to the side.

What is the maximum switching frequency for motor duty?

At AC-3 (motor start/run) the maximum is 500 cycles/hour; at AC-4 (plugging/inching) it is 150 cycles/hour.

MPN
3RT2038-1AF04