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Siemens 3RT2038-1NF34 — Contactors

Siemens 3RT2038-1NF34 SIRIUS Power Contactor, 83-155 V Coil,

MPN3RT2038-1NF34
Active

Siemens SIRIUS power contactor, Size S2, 3RT2038-1NF34, coil 83-155 V, screw-type terminals, screw and snap-on mounting onto 35 mm DIN rail.

Siemens 3RT2038-1NF34 datasheet (PDF)
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

3RT2038-1NF34 — Identification
ParameterValue
Contactor frame sizeS2
3RT2038-1NF34 — 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
3RT2038-1NF34 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz2 VA
Rated value @ 50 Hz83 ... 155 V
3RT2038-1NF34 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2038-1NF34 — 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)
3RT2038-1NF34 — 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
3RT2038-1NF34 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2038-1NF34 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2038-1NF34 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth174 mm
3RT2038-1NF34 — Specifications
ParameterValue
At AC30 ... 55 ms

Product details

The coil is rated 83-155 V and draws 2 VA at both 50 and 60 Hz, with an inrush peak of 1.5 A. Main contacts are screw-type terminals, accepting 2x (0.5 to 1.5 mm²) solid or stranded and 2x (0.75 to 2.5 mm²).

For resistive loads (AC-1), the maximum is 700 ops/h. The AC-4 rating of 150 ops/h covers plugging and inching duty, typical for cranes or reversing drives. Dimensions are 114 mm high, 55 mm wide, 174 mm deep — the depth is the dimension that extends into the panel, so allow clearance for wiring and arc space.

Integration notes

No auxiliary switch is fitted on this variant. Order a separate auxiliary contact block for feedback contacts.

Frequently asked questions

What are the key dimensions of 3RT2038-1NF34?

Height 114 mm, width 55 mm, depth 174 mm. The depth is the panel-inward dimension.

Will 3RT2038-1NF34 drop into a panel specified around 3RT2037-1AL20-ZX95?

Both are SIRIUS Size S2 contactors with the same DIN-rail footprint and screw-terminal main contacts, so the panel layout and wiring should be compatible. The key difference is the coil voltage — the 3RT2037-1AL20-ZX95 uses a different coil rating — so verify your control supply matches the 83-155 V coil of this part.

MPN
3RT2038-1NF34