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Siemens 3RT1374-6AR36 — Contactors

Siemens 3RT1374-6AR36 SIRIUS Contactor, Size S12, 250-500V A

MPN3RT1374-6AR36
Active

Siemens SIRIUS contactor, size S12, 3RT1374-6AR36, 225 x 184 x 180 mm, screw fixing, screw-type coil terminals, 250-500 V AC coil.

Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

3RT1374-6AR36 — Identification
ParameterValue
Contactor frame sizeS12
3RT1374-6AR36 — Ratings & Performance
ParameterValue
Rated value @ 400 V3 A
Rated value @ 500 V2 A
Rated value @ 690 V2 A
Rated value @ 230 V4 A
Rated value @ 24 V3 A
Rated value @ 110 V0.55 A
Rated value @ 220 V0.3 A
3RT1374-6AR36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz21 VA
Rated value @ 50 Hz250 ... 500 V
3RT1374-6AR36 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts4
3RT1374-6AR36 — Protection & Coordination
ParameterValue
Short-circuit coordination type 2, fusegG: 630 A (500 V, 100 kA)
Aux. switch short-circuit protection, fusegG: 10 A (690 V, 1 kA)
3RT1374-6AR36 — Connection & Mounting
ParameterValue
Main circuit connectionConnection bar, broadened > 450A required
Aux. / control circuit connectionscrew-type terminals
Conductor cross-section, solid1x (1 ... 4mm²), 2x (1 ... 4mm²)
Conductor cross-section, solid or stranded1x (1 ... 4mm²), 2x (1 ... 4mm²)
Conductor cross-section, finely stranded w/ ferrule1x (0.75 ... 2.5 mm²), 2x (0.75 ... 2.5 mm²)
Mounting methodscrew fixing
Side-by-side mountingYes
3RT1374-6AR36 — Environmental
ParameterValue
Operating temperature range-40 ... +60 °C
Storage temperature range-40 ... +70 °C
Installation altitude, max.2 000 m
3RT1374-6AR36 — Mechanical
ParameterValue
Width184 mm
Height225 mm
Depth180 mm
3RT1374-6AR36 — Specifications
ParameterValue
At AC45 ... 80 ms

Product details

It mounts via screw fixing on a vertical surface, with flexibility to be rotated ±180° or tilted forward/backward up to 30° at 0° rotation, or used standing. The 225 mm height, 184 mm width, and 180 mm depth define the panel space it occupies; clearance distances of 10 mm upwards, 10 mm downwards, 10 mm at the side, and 20 mm forwards are needed around it for heat dissipation and arc containment.

Coil power consumption is 21 VA at either frequency. The pickup voltage ratio is 0.8 (initial value), and the dropout voltage ratio is 1.1 (full-scale value), meaning the contactor picks up at 80% of rated voltage and drops out at 110% — standard for AC coils to ensure reliable pull-in under brownout conditions.

Main and auxiliary contacts

The contactor carries 2 instantaneous auxiliary contacts and includes an auxiliary switch. Up to 2 additional auxiliary contacts can be attached. Rated operational current varies by voltage: at 24 V it is 3 A, at 48 V it is 1.5 A, at 110 V and 125 V it is 0.55 A, at 220 V it is 0.3 A, at 230 V it is 4 A, at 400 V it is 3 A, at 500 V it is 2 A, and at 690 V it is 2 A. These values reflect the switching capacity across different control and auxiliary circuits — the 230 V and 400 V ratings are the highest, typical for motor control applications.

Environmental and wiring specs

The screw terminals accept solid or stranded conductors: 1x (1 to 4 mm²) or 2x (1 to 4 mm²) per clamp, which covers standard control wiring up to 12 AWG.

Frequently asked questions

What are the key dimensions for panel layout?

The contactor measures 225 mm high, 184 mm wide, and 180 mm deep. It requires 10 mm clearance upwards, downwards, and at the sides, plus 20 mm forwards for safe operation.

What is the coil voltage and power consumption?

The coil is rated for 250 to 500 V AC at 50/60 Hz, consuming 21 VA at either frequency. Pickup is at 80% of rated voltage; dropout at 110%.

What conductor sizes does the screw terminal accept?

The screw-type terminals accept 1x (1 to 4 mm²) or 2x (1 to 4 mm²) solid or stranded conductors.

What is the operating temperature range?

Operating temperature is -40 to +60 °C; storage temperature is -40 to +70 °C.

MPN
3RT1374-6AR36