Skip to main content
Siemens 3RT1456-6AT36 — Contactors

Siemens 3RT1456-6AT36 SIRIUS Contactor, Size S6, 575-600V AC

MPN3RT1456-6AT36
Active

Siemens SIRIUS 3RT1456-6AT36, Size S6 contactor, 575-600 V AC/DC coil, screw-type terminals, current production.

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

Specifications

3RT1456-6AT36 — Identification
ParameterValue
Contactor frame sizeS6
3RT1456-6AT36 — Ratings & Performance
ParameterValue
Rated operational current, AC-12, max.10 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
3RT1456-6AT36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.8
Rated value @ 50 Hz575 ... 600 V
3RT1456-6AT36 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1456-6AT36 — Protection & Coordination
ParameterValue
Short-circuit coordination type 1, fusegG: 355 A (690 V, 100 kA)
Short-circuit coordination type 2, fusegR: 350 A (690 V, 100 kA)
Aux. switch short-circuit protection, fusegG: 10 A (500 V, 1 kA)
3RT1456-6AT36 — Connection & Mounting
ParameterValue
Main circuit connectionConnection bar
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
Conductor cross-section, solid or stranded2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)
Conductor cross-section, finely stranded w/ ferrule2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew fixing
Side-by-side mountingYes
3RT1456-6AT36 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1456-6AT36 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1456-6AT36 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1456-6AT36 — Specifications
ParameterValue
At AC40 ... 60 ms

Product details

It carries a 575 to 600 V AC/DC coil, meaning it operates on either supply type without needing a separate coil variant — useful when a panel has mixed control voltages or you're standardizing on one contactor for both AC and DC pilot circuits. The envelope is 172 mm high, 120 mm wide, and 170 mm deep, which places it in the larger end of the SIRIUS contactor range.

Main power terminals accept stranded conductors from 25 to 120 mm², which covers the range you'd expect for a Size S6 contactor handling higher-current motor circuits. The auxiliary/signal terminals are screw-type and accept solid or stranded wire in multiple combinations: 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²), with a maximum of 2x (0.75 to 4 mm²). That's enough for daisy-chaining control wiring or paralleling auxiliary contacts without a separate terminal block. The coil terminals are also screw-type, so no special crimp tooling is needed for the control circuit.

Switching performance and ratings

Auxiliary contact switching capacity is specified at several voltage levels: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 6 A at 230 V. These are the make/break ratings for the built-in auxiliary contacts — useful when you're feeding PLC inputs or pilot lights at different control voltages. The 10 A at 24 V is generous for a built-in auxiliary; it can drive multiple relay coils or indicator loads directly.

Frequently asked questions

What is the depth of this contactor?

The depth is 170 mm. Combined with the 172 mm height and 120 mm width, this is the full envelope you need to allow for inside the enclosure.

What wire sizes do the main and auxiliary terminals accept?

The main power terminals accept stranded conductors from 25 to 120 mm². The auxiliary/signal terminals accept solid or stranded wire in combinations up to 2x 4 mm² maximum, with screw-type clamping.

MPN
3RT1456-6AT36