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Siemens 3RT1374-6AE36 — Contactors

Siemens 3RT1374-6AE36 SIRIUS Contactor, S12, 20-60 V AC Coil

MPN3RT1374-6AE36
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Siemens SIRIUS 3RT1374-6AE36 contactor, size S12, 20-60 V AC 50/60 Hz coil, 3-pole main contacts, 2 NO + 2 NC auxiliary contacts, screw-type terminals, screw fixing.

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

3RT1374-6AE36 — Identification
ParameterValue
Contactor frame sizeS12
3RT1374-6AE36 — 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
3RT1374-6AE36 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz8.5 VA
Rated value @ 50 Hz24 ... 60 V
3RT1374-6AE36 — Contacts & Poles
ParameterValue
Main poles4
Main NO contacts4
3RT1374-6AE36 — 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)
3RT1374-6AE36 — 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
3RT1374-6AE36 — Environmental
ParameterValue
Operating temperature range-40 ... +60 °C
Storage temperature range-40 ... +70 °C
Installation altitude, max.2 000 m
3RT1374-6AE36 — Mechanical
ParameterValue
Width184 mm
Height225 mm
Depth180 mm
3RT1374-6AE36 — Specifications
ParameterValue
At AC45 ... 80 ms

Product details

It is a current-production part, so it remains a standard BOM line item rather than an obsolescence watch. The coil is rated for 20-60 V AC at both 50 Hz and 60 Hz, drawing 8.5 VA apparent power at either frequency. That means the control transformer or PLC output driving it must be sized for that inrush, not just the holding VA — a common oversight when swapping from a DC coil contactor. Main contact ratings span the standard utilization categories: 4 A at 230 V, 3 A at 400 V, 2 A at 690 V. The auxiliary contact block is built in — 2 NO + 2 NC instantaneous contacts — so no separate add-on module is needed for basic status feedback or interlocking.

Mounting is by screw fixing to a vertical surface, with the option to rotate the contactor ±180° or tilt it ±30° forward or backward. That flexibility helps when the contactor must sit in a tight corner of the enclosure and the coil terminals need to face the gland plate. Dimensions: 184 mm width × 225 mm height × 180 mm depth. Clearances: 10 mm above and below, 20 mm in front, 10 mm at the sides. That covers the typical control wiring range for a contactor this size — no need for ferrule adapters unless your panel standard mandates them.

The lifecycle stage is current; Siemens still manufactures this order code. No announced phase-out or last-time-buy date.

Environmental and operating range

The contactor operates across -40 °C to +60 °C ambient, with storage range extending to +70 °C.

Frequently asked questions

What is the physical size and mounting requirement?

Dimensions are 184 mm wide × 225 mm high × 180 mm deep. Mount by screw fixing to a vertical surface. Allow 10 mm clearance above, below, and at sides; 20 mm in front.

MPN
3RT1374-6AE36