Skip to main content
Log in
Siemens 3RT2038-1KB44-3MA0 — Contactors

Siemens 3RT2038-1KB44-3MA0 SIRIUS Coupling Contactor, 24 V D

MPN3RT2038-1KB44-3MA0
Active

Siemens SIRIUS, coupling contactor, order code 3RT2038-1KB44-3MA0, size S2, 24 V DC coil, screw-type terminals, 174 × 55 × 114 mm.

$185.42 – $518.08Ref. price · indicative, final on quote
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

3RT2038-1KB44-3MA0 — Identification
ParameterValue
Contactor frame sizeS2
3RT2038-1KB44-3MA0 — 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
3RT2038-1KB44-3MA0 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2038-1KB44-3MA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT2038-1KB44-3MA0 — 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)
3RT2038-1KB44-3MA0 — 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
3RT2038-1KB44-3MA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2038-1KB44-3MA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2038-1KB44-3MA0 — Mechanical
ParameterValue
Width55 mm
Height114 mm
Depth174 mm

Product details

Key electrical and mechanical ratings

The 3RT2038-1KB44-3MA0 is a Siemens SIRIUS coupling contactor in size S2 with a 24 V DC coil and screw-type terminals. Coil holds at 6 A at 24 V rated value, with an inrush peak of 2.6 A. Operating ambient range of -25 to +60 °C; storage range -55 to +80 °C.

Accepts ±180° rotation on a vertical surface and can be tilted forward/backward by ±22.5°. Requires 10 mm clearance upward and forward, 6 mm at the sides, and 10 mm downward. Dimensions: 174 mm depth, 55 mm width, 114 mm height.

MPN
3RT2038-1KB44-3MA0