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Siemens 3RT1056-2AB36 — Contactors

Siemens 3RT1056-2AB36 SIRIUS Power Contactor, 23-26 VDC Coil

MPN3RT1056-2AB36
Active

Siemens SIRIUS, power contactor, 3RT1056-2AB36, S6 frame, 23-26 VDC coil, spring-type terminals, 170 mm depth.

$303.53Ref. price · indicative, final on quote
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RT1056-2AB36 — Identification
ParameterValue
Contactor frame sizeS6
3RT1056-2AB36 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 A
Rated operational current, AC-4 @ 400 V160 A
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V1 A
Rated value @ 230 V30 hp
Rated value @ 24 V10 A
Rated value @ 60 V2 A
Rated value @ 110 V1 A
Rated value @ 220 V0.3 A
3RT1056-2AB36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.8
Rated value @ 50 Hz23 ... 26 V
3RT1056-2AB36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1056-2AB36 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 355 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegG: 315 A (690 V, 100 kA), aM: 200 A (690 V, 50 kA), BS88: 315 A (415 V, 50 kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT1056-2AB36 — 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
3RT1056-2AB36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1056-2AB36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1056-2AB36 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1056-2AB36 — Specifications
ParameterValue
At AC40 ... 60 ms

Product details

It uses a 23-26 VDC coil and spring-type terminals on the coil side, with screw fixing for panel mounting. The contactor carries a mechanical life of 10,000,000 operations and an operating temperature range of -25 to +60 °C.

Coil and Control Circuit Details

The coil side wiring uses spring-type terminals accepting 2x (0.25-2.5 mm²) solid or stranded. The main power terminals accept stranded wire from 25 to 120 mm², sized for the S6 frame's current capacity. An auxiliary switch is built in, rated 10 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V — enough to signal a PLC input or drive a pilot light.

Mounting is by screw fixing with one 9 mm hole. The contactor can be mounted on a vertical surface, rotatable ±90°, and tiltable ±22.5° forward and backward. Dimensions: 172 mm high, 120 mm wide, 170 mm deep. That 170 mm depth is the front-to-back envelope — factor it into your panel layout, especially if you're retrofitting into an existing enclosure where the backplane is tight.

Frequently asked questions

What is 3RT1056-2AB36's listed depth?

The depth is 170 mm front-to-back, with an additional 20 mm forward clearance required.

What wire sizes does the 3RT1056-2AB36 accept?

The coil terminals accept 2x (0.25-2.5 mm²) solid or stranded via spring-type terminals. The main power terminals accept stranded wire from 25 to 120 mm².

What compliance documentation does Siemens provide for 3RT1056-2AB36?

As a SIRIUS product, the 3RT1056-2AB36 typically carries CE, UL, CSA, and RoHS/REACH declarations. Specific certificates are available from Siemens upon request or from the product documentation.

MPN
3RT1056-2AB36