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Siemens 3RT1075-2AB36 — Contactors

Siemens 3RT1075-2AB36 SIRIUS Power Contactor, S12, 24 VDC co

MPN3RT1075-2AB36
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Siemens SIRIUS power contactor, size S12, 3RT1075-2AB36, 24 VDC coil, screw fixing, 10 A at 24 V rated switching current.

Siemens 3RT1075-2AB36 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT1075-2AB36 — Identification
ParameterValue
Contactor frame sizeS12
3RT1075-2AB36 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V350 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V6 A
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1075-2AB36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.9
Rated value @ 50 Hz23 ... 26 V
3RT1075-2AB36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1075-2AB36 — 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: 400 A (690 V, 50 kA), BS88: 450 A (415 V, 50 kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT1075-2AB36 — Connection & Mounting
ParameterValue
Main circuit connectionConnection bar
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
3RT1075-2AB36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1075-2AB36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1075-2AB36 — Mechanical
ParameterValue
Width160 mm
Height214 mm
Depth225 mm
3RT1075-2AB36 — Specifications
ParameterValue
At AC60 ... 100 ms

Product details

The 3RT1075-2AB36: Mounts via screw fixing (four holes, 11 mm diameter) on a vertical surface, rotatable ±90° and tiltable ±22.5° front-to-back. Dimensions are 214 mm high, 160 mm wide, 225 mm deep — this is a full-size S12 block, so plan for a 225 mm depth behind the panel door. Power terminals accept stranded cable up to 240 mm²; auxiliary control wiring uses spring-type terminals for 0.25 to 2.5 mm² solid or stranded.

Switching performance and thermal limits

Rated for AC-3 motor switching at up to 500 operations per hour (AC-3e also 500/h), AC-1 resistive loads at 700/h, and AC-4 plugging/reversing at 130/h. The auxiliary switch is integrated, so no separate add-on is required for basic status feedback.

Frequently asked questions

What are the key ratings for the 3RT1075-2AB36?

It is a SIRIUS S12 power contactor with a 24 VDC coil (rated range 23–26 V), rated switching current 10 A at 24 V, and capable of 500 AC-3 operations per hour. Dimensions are 214×160×225 mm.

How does the 3RT1075-2AB36 compare to the 3RT5065-6AB36?

The 3RT5065-6AB36 is a different frame size and coil voltage — it does not drop in without rewiring and re-drilling the mounting holes. The 3RT1075-2AB36 is the correct S12 24 VDC variant for a panel originally specified around that frame.

MPN
3RT1075-2AB36