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Siemens 3RT2047-3XB40-0LA2 — Contactors

Siemens 3RT2047-3XB40-0LA2 SIRIUS Contactor, 96 A at 480 V

MPN3RT2047-3XB40-0LA2
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Siemens SIRIUS 3RT2047-3XB40-0LA2 contactor, size S3, 96 A at 480 V AC-3, 24 V DC coil, spring-type terminals, 70 mm width, screw and snap-on DIN rail mounting.

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

Specifications

3RT2047-3XB40-0LA2 — Identification
ParameterValue
Contactor frame sizeS3
3RT2047-3XB40-0LA2 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V97 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V20 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT2047-3XB40-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT2047-3XB40-0LA2 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT2047-3XB40-0LA2 — 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: 200A (690V,100kA), aM: 100A (690V,100kA), BS88: 160A (415V,80kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT2047-3XB40-0LA2 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid or stranded2x (0.5 ... 2.5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²)
Mounting methodscrew and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715
Side-by-side mountingYes
3RT2047-3XB40-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT2047-3XB40-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT2047-3XB40-0LA2 — Mechanical
ParameterValue
Width70 mm
Height140 mm
Depth152 mm

Product details

S3 frame contactor with 24 V DC coil and spring terminals

The Siemens 3RT2047-3XB40-0LA2 is a SIRIUS-branded contactor in the S3 frame size, rated for 96 A at 480 V and 99 A at 600 V in AC-3 duty — these are the main contact current ratings that govern motor switching capability, not the auxiliary contact capacity. The coil is 24 V DC with a 6.5 A inrush peak; the DC operating time spans 38 to 57 ms, which matters when sequencing contactors in interlock circuits — the spread means the downstream PLC input filter must be set wide enough to catch the full window.

Panel fit and mounting clearances

Dimensions are 152 mm deep, 70 mm wide, 140 mm high — the 70 mm width means it occupies two standard 35 mm DIN-rail module slots, so plan rail space accordingly when grouping with overload relays or busbars.

No stock-holding claim is made — each order is placed against confirmed supply.

Frequently asked questions

What is the main contact current rating of 3RT2047-3XB40-0LA2?

The main contacts are rated 96 A at 480 V and 99 A at 600 V in AC-3 duty.

What coil voltage does 3RT2047-3XB40-0LA2 use?

The coil is 24 V DC with a 6.5 A inrush peak and a hold current that settles after the 38-57 ms operating time. The spring-type terminals accept 2x 0.5-2.5 mm² wire for the coil connection.

MPN
3RT2047-3XB40-0LA2