Skip to main content
Siemens 3RT1076-2XB46-0LA2 — Contactors

Siemens 3RT1076-2XB46-0LA2 SIRIUS Power Contactor, 24 VDC, S

MPN3RT1076-2XB46-0LA2
Active

Siemens SIRIUS, Power contactor, 3RT1076-2XB46-0LA2, Size S12, 24 V DC coil, screw fixing, auxiliary switch included.

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

Specifications

3RT1076-2XB46-0LA2 — Identification
ParameterValue
Contactor frame sizeS12
3RT1076-2XB46-0LA2 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V430 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V148 kW
Rated value @ 230 V6 A
Rated value @ 24 V6 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1076-2XB46-0LA2 — Control & Coil
ParameterValue
Control supply voltage typeDC
3RT1076-2XB46-0LA2 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
3RT1076-2XB46-0LA2 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 630 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 500 A (690 V, 100 kA), aM: 500 A (690 V, 50 kA), BS88: 500 A (415 V, 50 kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT1076-2XB46-0LA2 — Connection & Mounting
ParameterValue
Main circuit connectionscrew-type terminals
Aux. / control circuit connectionspring-loaded terminals
Conductor cross-section, solid2x (0.25 ... 2.5 mm²)
Conductor cross-section, solid or stranded2x (0,25 ... 2,5 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.25 ... 1.5 mm²)
Mounting methodscrew fixing
Side-by-side mountingYes
3RT1076-2XB46-0LA2 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1076-2XB46-0LA2 — Environmental
ParameterValue
Operating temperature range-40 ... +70 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1076-2XB46-0LA2 — Mechanical
ParameterValue
Width160 mm
Height214 mm
Depth225 mm

Product details

The 24 V DC coil is the control voltage you need to budget for in your 24 VDC control supply. It mounts via screw fixing with a single 11 mm hole, and the vertical mounting surface can be rotated ±90° or tilted ±22.5° front-to-back, giving you flexibility in tight enclosures.

The contactor carries switching frequency ratings by duty class: 500 operations/hour at AC-1 (resistive), 420 at AC-3 (motor starting), and 130 at AC-4 (plugging/inching). That AC-3 figure of 420 ops/hour is the one to check against your application cycle rate — if your conveyor starts every 8 seconds, you're at 450 ops/hour and this contactor won't keep up. For the auxiliary switch, DC current ratings are given per voltage: 6 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V. If you're switching a 24 VDC pilot light drawing 0.5 A, that's fine — but if you're switching a 48 VDC solenoid pulling 2.5 A, you're over the rating.

Integration and Mounting Considerations

Dimensions are 214 mm high, 160 mm wide, 225 mm deep. The screw-fix mounting uses one 11 mm hole. Conductor cross-sections accepted: 2x 0.25 to 2.5 mm² solid or stranded. This is a panel-mount part, not DIN-rail — plan your backplate layout accordingly.

Frequently asked questions

What are the key physical dimensions of this contactor?

Height is 214 mm, width is 160 mm, depth is 225 mm. It requires 10 mm clearance upwards, downwards, and to the sides, and 20 mm forwards. Mounting is via screw fixing with a single 11 mm hole.

What conductor sizes does the 3RT1076-2XB46-0LA2 accept?

It accepts 2x 0.25 to 2.5 mm² solid or stranded conductors on the power terminals.

What is the coil voltage for this contactor?

The coil is rated 24 V DC.

MPN
3RT1076-2XB46-0LA2