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Siemens 3RT2038-1AB04 — Contactors

Siemens 3RT2038-1AB04 SIRIUS Power Contactor, 65 A at 480 V

MPN3RT2038-1AB04
Active

Siemens SIRIUS, power contactor, Size S2, 3RT2038-1AB04, 65 A at 480 V AC-3, 15 hp at 230 V, screw and snap-on 35 mm DIN rail.

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

3RT2038-1AB04 — Identification
ParameterValue
Contactor frame sizeS2
3RT2038-1AB04 — 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
3RT2038-1AB04 — Control & Coil
ParameterValue
Control supply voltage typeAC
Rated value @ 50 Hz0.37
Rated value @ 50 Hz24 V
3RT2038-1AB04 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2038-1AB04 — 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)
3RT2038-1AB04 — 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
3RT2038-1AB04 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2038-1AB04 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2038-1AB04 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth174 mm
3RT2038-1AB04 — Specifications
ParameterValue
At AC10 ... 18 ms

Product details

Its headline AC-3 rating of 65 A at 480 V means it can handle a 3-phase induction motor drawing that current under starting and running conditions — the duty cycle that governs most conveyor, pump, and fan loads. At 230 V it's rated for 15 hp, which aligns with common North American motor frames in the 10–15 hp range. The coil pulls 24 V at 50 Hz, and the main contacts are configured as 3-pole normally open. There's no built-in auxiliary switch block — you'll add a separate SIRIUS auxiliary contactor or side-mount block if you need status feedback or interlocking.

Mechanical fit and panel integration

Switching duty and thermal limits

This contactor is rated for different switching frequencies depending on the duty category: 700 operations per hour at AC-1 (resistive loads), 500/h at AC-3 (motor starting/running), and 150/h at AC-4 (plugging/reversing/inching). The AC-4 limit is the one that bites if you're doing frequent reversing — 150 ops/h means about one every 24 seconds, which is fine for most jogging but not for high-cycle indexing.

No successor order code is indicated — this is the current production variant.

MPN
3RT2038-1AB04