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Siemens 3RT1056-6SF36-3PA0 — Contactors

Siemens 3RT1056-6SF36-3PA0 SIRIUS Power Contactor, S6, 96-12

MPN3RT1056-6SF36-3PA0
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Siemens SIRIUS power contactor, size S6, 3RT1056-6SF36-3PA0, coil 96-127 VAC, screw-type coil terminals, auxiliary switch, MTBF 75 a.

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

3RT1056-6SF36-3PA0 — Identification
ParameterValue
Contactor frame sizeS6
3RT1056-6SF36-3PA0 — 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
3RT1056-6SF36-3PA0 — Control & Coil
ParameterValue
Control supply voltage typeAC/DC
Rated value @ 50 Hz0.6
Rated value @ 50 Hz96 ... 127 V
3RT1056-6SF36-3PA0 — Contacts & Poles
ParameterValue
Main poles3
Main NO contacts3
Auxiliary contact reliability1 faulty switching per 100 million (17 V, 1 mA)
3RT1056-6SF36-3PA0 — 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)
3RT1056-6SF36-3PA0 — 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
3RT1056-6SF36-3PA0 — Durability
ParameterValue
Durability (operating cycles, typ.)10 000 000
Durability with aux. switch block (cycles, typ.)10 000 000
3RT1056-6SF36-3PA0 — Environmental
ParameterValue
Operating temperature range-25 ... +60 °C
Storage temperature range-55 ... +80 °C
Installation altitude, max.2 000 m
3RT1056-6SF36-3PA0 — Mechanical
ParameterValue
Width120 mm
Height172 mm
Depth170 mm
3RT1056-6SF36-3PA0 — Specifications
ParameterValue
At AC115 ... 130 ms

Product details

It carries a coil rated at 96-127 V AC, with screw-type coil terminals and an integrated auxiliary switch. Rated mechanical endurance is 10,000,000 cycles typical, with an MTBF of 75 a.

Switching frequency varies by duty class: AC-1 (resistive) and AC-3 (motor start/run) both allow up to 750 operations per hour, AC-2 (slip-ring motor) also 300/h, and AC-4 (plugging/inching) drops to 130/h. The AC-3e maximum matches the standard AC-3 rate at 750/h. These rates define the thermal cycling the contactor can sustain without accelerated wear — a conveyor running frequent start/stop cycles at 750/h stays within the AC-3 envelope. Operate time is 115-130 ms on both AC and DC coils, with an arcing time of 10-15 ms. The coil pickup threshold is 0.8 × rated voltage, dropout at 0.6 × rated (50/60 Hz). These figures matter for control logic timing and for ensuring the contactor holds in during voltage sags. Auxiliary contact ratings: 10 A at 24 V, 2 A at 48 V, 2 A at 60 V.

Envelope dimensions: 172 mm high × 120 mm wide × 170 mm deep. Mounting is screw-fixing to a vertical surface; the contactor can be rotated ±90° and tilted ±22.5° front-to-back. These clearances govern gland-plate layout and busbar routing — a 120 mm wide contactor with side clearance needs roughly 140 mm of DIN-rail or backplate width per unit. Main power terminals accept stranded 25-120 mm² cable. Auxiliary terminals accept 2× (0.5-1.5 mm²), 2× (0.75-2.5 mm²), or max 2× (0.75-4 mm²) solid or stranded. The coil uses screw-type terminals — no push-in or spring-cage on the coil circuit. Panel builders should plan for a screwdriver-accessible coil connection.

Sourcing is straightforward: this is a current-catalog SIRIUS contactor. The part is quoted to order through independent distribution — no minimum-buy or long-lead concern typical of end-of-life parts.

Frequently asked questions

What is the MTBF of 3RT1056-6SF36-3PA0?

The listed MTBF is 75 a (years). This is a reliability metric for the contactor under typical operating conditions, not a guaranteed service life.

How do I get current pricing and availability for 3RT1056-6SF36-3PA0?

Submit an RFQ through this listing. Availability and current pricing are confirmed at quote time; the part is sourced to order through independent distribution channels.

What compliance documentation does Siemens provide for 3RT1056-6SF36-3PA0?

Siemens SIRIUS contactors typically carry CE, UL, CSA, and RoHS declarations. Specific certificates for this order code are available on request as part of the documentation package.

Will 3RT1056-6SF36-3PA0 drop into a panel specified around 3RT1056-1AB36?

Both are S6 frame size contactors with the same envelope dimensions (172×120×170 mm) and mounting pattern. The main difference is the coil voltage: this unit is 96-127 V AC, while the 1AB36 variant uses a different coil. Panel fit is identical if the coil voltage matches your control circuit.

MPN
3RT1056-6SF36-3PA0