Contactors for Data Center PDU and UPS Systems: Selection Guide
AC-1 and AC-6a contactors for data center PDU and UPS systems: sizing, harmonic derating, coil selection, and endurance guidance for engineers. Shop at Stoklink.
- Part number
- 3RT1055-6AP36
In stock · 50+
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· From Türkiye
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- Marine
- UL
Siemens 3RT1055-6AP36 3RT1 150A 3P 400V Contactor
The Siemens 3RT1055-6AP36 is a 3-pole SIRIUS 3RT1 contactor rated 150 A (AC-3) / 75 kW at 400 V, 125 hp at 480 V, with a 220–240 V AC/DC coil and 2 NO + 2 NC auxiliary contacts.
Description
About the 3RT1055-6AP36
About the 3RT1055-6AP36
The Siemens 3RT1055-6AP36 is a contactor from the SENTRON/SIRIUS 3RT1 series. Power contactor, AC-3e/AC-3 150 A, 75 kW / 400 V AC (50-60 Hz) / DC Uc: 220-240 V 3-pole, auxiliary contacts 2 NO + 2 NC drive: conventional main circuit: busbar control and auxiliary circuit: screw terminal. Supplied by Stoklink for industrial and commercial low-voltage applications.
Applications & Use Cases
The Siemens 3RT1055-6AP36 is used in industrial control panels, distribution boards and automation systems. As part of the Siemens 3RT1 range it integrates with compatible SENTRON/SIRIUS components for a coordinated low-voltage installation. Genuine Siemens product supplied by Stoklink with fast dispatch from Türkiye.
Specification
Full specification
General 4
| Series | SIRIUS 3RT1 |
|---|---|
| Contactor size / frame | S6 |
| Number of poles | 3 |
| Main contact configuration | 3 NO |
Electrical 8
| Rated operational current Ie, AC-3, 400 V | 150 A |
|---|---|
| Rated motor power, AC-3, 400 V | 75 kW |
| Rated operational current, AC-1 (60 °C) | 160 A |
| Rated operational current, AC-1 (40 °C) | 185 A |
| Rated operational current, AC-4, 400 V | 132 A |
| Max. rated operational voltage Ue | 1000 V |
| Rated insulation voltage Ui | 1000 V |
| Rated impulse withstand voltage Uimp | 8 kV |
Control circuit 5
| Rated control supply voltage Uc | 220–240 V |
|---|---|
| Coil type | AC-DC |
| Coil frequency | 50/60 Hz |
| Coil technology | Conventional, surge suppressor with varistor |
| Coil holding power | 5.2 W | VA |
Show all 53 specifications ↓ Show less ↑36 more values in Identification, Auxiliary contacts, Mechanical, Dimensions and weight, Environmental, North American ratings (UL/CSA), Certifications and standards, Logistics. 130 more as published by Siemens are shown on request.
Identification 14
| Part number | 3RT1055-6AP36 |
|---|---|
| Model code | S6 |
| Brand | Siemens |
| Series | SIRIUS 3RT1 |
| Family | Contactors |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4011209507333 |
| ETIM class | EC000066 |
| eCl@ss | 27371003 |
| UPC | 754554771670 |
| UNSPSC | 39121529 |
Auxiliary contacts 4
| Built-in auxiliary contacts, NO | 2 |
|---|---|
| Built-in auxiliary contacts, NC | 2 |
| Auxiliary contacts | 2 NO + 2 NC |
| Mirror contact (IEC 60947-4-1 Annex F) | Yes |
Mechanical 2
| Main circuit connection | Busbar |
|---|---|
| Mounting | Panel (screw) mounting |
Dimensions and weight 4
| Width | 120 mm |
|---|---|
| Height | 172 mm |
| Depth | 170 mm |
| Net weight | 3.205 kg |
Environmental 4
| Ambient operating temperature | -25 … 60 °C |
|---|---|
| Degree of protection | IP00; IP20 with box terminal/cover |
| Mechanical durability | 10000000 cycles |
| Max. operating frequency, AC-3 | 750 cycles/h |
North American ratings (UL/CSA) 2
| Motor rating (UL/CSA) | 50 hp @ 200/208 V · 60 hp @ 220/230 V · 125 hp @ 460/480 V · 150 hp @ 575/600 V · 30 hp @ 230 V (1-ph) |
|---|---|
| Full-load amps @ 480 V | 156 A |
Certifications and standards 1
| Certifications | Marine, UL |
|---|
Logistics 5
| Package dimensions (L × W × H) | 196 × 131 × 183 mm |
|---|---|
| Shipping weight | 3.32 kg |
| Ships from | Türkiye |
| Dispatch | 16 Nov |
| Stock | In stock |
Additional manufacturer data 130 130 more values as published by Siemens, shown on request.
Additional manufacturer data 130
| product brand name | SIRIUS |
|---|---|
| product designation | Power contactor |
| product extension · function module for communication | No |
| product extension · auxiliary switch | Yes |
| power loss [W] for rated value of the current · at AC in hot operating state | 27 W |
| power loss [W] for rated value of the current · without load current share typical | 5.2 W |
| type of calculation of power loss current-dependent | quadratic |
| insulation voltage · of auxiliary circuit with degree of pollution 3 rated value | 500 V |
| surge voltage resistance · of auxiliary circuit rated value | 6 kV |
| maximum permissible voltage for protective separation between coil and main contacts according to EN 60947-1 | 690 V |
| shock resistance at rectangular impulse · at AC | 8,5 g / 5 ms, 4,2 g / 10 ms |
| shock resistance at rectangular impulse · at DC | 8,5 g / 5 ms, 4,2 g / 10 ms |
| shock resistance with sine pulse · at AC | 13,4 g / 5 ms, 6,5 g / 10 ms |
| shock resistance with sine pulse · at DC | 13,4 g / 5 ms, 6,5 g / 10 ms |
| mechanical service life (operating cycles) · of the contactor with added electronically optimized auxiliary switch block typical | 5 000 000 |
| reference code according to IEC 81346-2 | Q |
| Substance Prohibitance (day/month/year) | 05/01/2012 |
| SVHC substance name | Lead CAS-No. 7439-92-1 |
| installation altitude at height above sea level maximum | 2 000 m |
| ambient temperature · during storage | -55 ... +80 °C |
| relative humidity minimum | 10 % |
| relative humidity at 55 °C according to IEC 60068-2-30 maximum | 95 % |
| number of NC contacts for main contacts | 0 |
| operating voltage · at AC-3e rated value maximum | 1 000 V |
| operational current · at AC-1 · up to 690 V at ambient temperature 40 °C rated value | 185 A |
| operational current · at AC-1 · up to 1000 V at ambient temperature 60 °C rated value | 90 A |
| operational current · at AC-3 · at 500 V rated value | 150 A |
| operational current · at AC-3 · at 690 V rated value | 150 A |
| operational current · at AC-3 · at 1000 V rated value | 65 A |
| operational current · at AC-3e · at 400 V rated value | 150 A |
| operational current · at AC-3e · at 500 V rated value | 150 A |
| operational current · at AC-3e · at 690 V rated value | 150 A |
| operational current · at AC-3e · at 1000 V rated value | 65 A |
| operational current · at AC-5a up to 690 V rated value | 162 A |
| operational current · at AC-5b up to 400 V rated value | 124 A |
| operational current · at AC-6a · up to 230 V for current peak value n=20 rated value | 150 A |
| operational current · at AC-6a · up to 400 V for current peak value n=20 rated value | 150 A |
| operational current · at AC-6a · up to 500 V for current peak value n=20 rated value | 150 A |
| operational current · at AC-6a · up to 690 V for current peak value n=20 rated value | 150 A |
| operational current · at AC-6a · up to 1000 V for current peak value n=20 rated value | 65 A |
| minimum cross-section in main circuit at maximum AC-1 rated value | 95 mm2 |
| operational current for approx. 200000 operating cycles at AC-4 · at 400 V rated value | 68 A |
| operational current · up to 400 V for current peak value n=20 rated value | 100 kVA |
| operational current · up to 500 V for current peak value n=20 rated value | 130 kVA |
| operational current · up to 690 V for current peak value n=20 rated value | 170 kVA |
| operational current · up to 1000 V for current peak value n=20 rated value | 110 kVA |
| operating apparent power at AC-6a · up to 230 V for current peak value n=30 rated value | 40 kVA |
| operating apparent power at AC-6a · up to 400 V for current peak value n=30 rated value | 70 kVA |
| operating apparent power at AC-6a · up to 500 V for current peak value n=30 rated value | 90 kVA |
| operating apparent power at AC-6a · up to 690 V for current peak value n=30 rated value | 120 kVA |
| operating apparent power at AC-6a · up to 1000 V for current peak value n=30 rated value | 110 kVA |
| short-time withstand current in cold operating state up to 40 °C · limited to 1 s switching at zero current maximum | 2 727 A; Use minimum cross-section acc. to AC-1 rated value |
| no-load switching frequency · at AC | 2 000 1/h |
| no-load switching frequency · at DC | 2 000 1/h |
| operating frequency · at AC-1 maximum | 800 1/h |
| operating frequency · at AC-2 maximum | 300 1/h |
| operating frequency · at AC-3e · maximum | 750 1/h |
| operating frequency · at AC-4 maximum | 130 1/h |
| control supply voltage at DC rated value | 220 ... 240 V |
| operating range factor control supply voltage rated value of magnet coil at DC · initial value | 0.8 |
| apparent pick-up power · at minimum rated control supply voltage at AC · at 50 Hz | 250 V-A |
| apparent pick-up power · at maximum rated control supply voltage at AC · at 60 Hz | 300 V-A |
| apparent pick-up power of magnet coil at AC · at 50 Hz | 300 V-A |
| apparent pick-up power of magnet coil at AC · at 60 Hz | 300 V-A |
| inductive power factor with closing power of the coil · at 50 Hz | 0.9 |
| inductive power factor with closing power of the coil · at 60 Hz | 0.9 |
| apparent holding power · at minimum rated control supply voltage at DC | 4.3 V-A |
| apparent holding power · at maximum rated control supply voltage at DC | 5.2 V-A |
| inductive power factor with the holding power of the coil · at 50 Hz | 0.8 |
| closing power of magnet coil at DC | 360 W |
| closing delay · at AC | 20 ... 95 ms |
| closing delay · at DC | 20 ... 95 ms |
| opening delay · at AC | 40 ... 60 ms |
| opening delay · at DC | 40 ... 60 ms |
| arcing time | 10 ... 15 ms |
| control version of the switch operating mechanism | Standard A1 - A2 |
| operational current at AC-12 maximum | 10 A |
| operational current at AC-15 · at 230 V rated value | 6 A |
| operational current at AC-15 · at 400 V rated value | 3 A |
| operational current at AC-15 · at 500 V rated value | 2 A |
| operational current at AC-15 · at 690 V rated value | 1 A |
| operational current at DC-12 · at 24 V rated value | 10 A |
| operational current at DC-12 · at 48 V rated value | 6 A |
| operational current at DC-12 · at 60 V rated value | 6 A |
| operational current at DC-12 · at 110 V rated value | 3 A |
| operational current at DC-12 · at 125 V rated value | 2 A |
| operational current at DC-12 · at 220 V rated value | 1 A |
| operational current at DC-12 · at 600 V rated value | 0.15 A |
| operational current at DC-13 · at 24 V rated value | 10 A |
| operational current at DC-13 · at 48 V rated value | 2 A |
| operational current at DC-13 · at 60 V rated value | 2 A |
| operational current at DC-13 · at 110 V rated value | 1 A |
| operational current at DC-13 · at 125 V rated value | 0.9 A |
| operational current at DC-13 · at 220 V rated value | 0.3 A |
| operational current at DC-13 · at 600 V rated value | 0.1 A |
| contact reliability of auxiliary contacts | 1 faulty switching per 100 million (17 V, 1 mA) |
| full-load current (FLA) for 3-phase AC motor · at 600 V rated value | 144 A |
| yielded mechanical performance [hp] · for single-phase AC motor · at 230 V rated value | 30 hp |
| yielded mechanical performance [hp] · for 3-phase AC motor · at 200/208 V rated value | 50 hp |
| yielded mechanical performance [hp] · for 3-phase AC motor · at 220/230 V rated value | 60 hp |
| yielded mechanical performance [hp] · for 3-phase AC motor · at 460/480 V rated value | 125 hp |
| yielded mechanical performance [hp] · for 3-phase AC motor · at 575/600 V rated value | 150 hp |
| contact rating of auxiliary contacts according to UL | A600 / Q600 |
| design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V | C characteristic: 10 A; 0.4 kA |
| design of the fuse link • for short-circuit protection of the main circuit — with type of coordination 1 required — with type of coordination 2 required • for short-circuit protection of the auxiliary switch required | gG: 355 A (690 V, 100 kA) gG: 315 A (690 V, 100 kA), aM: 200 A (690 V, 50 kA), BS88: 315 A (415 V, 50 kA) gG: 10 A (500 V, 1 kA) |
| mounting position | with vertical mounting surface ± 90° rotatable, with vertical mounting surface ± 22.5° tiltable to the front and back |
| fastening method side-by-side mounting | Yes |
| required spacing • with side-by-side mounting — forwards — upwards — downwards — at the side • for grounded parts — forwards — upwards — at the side — for live parts — forwards — upwards — upwards — at the side | 20 mm 10 mm 10 mm 0 mm 20 mm 10 mm 10 mm 20 mm 10 mm 10 mm |
| type of electrical connection • for main current circuit • for auxiliary and control circuit • at contactor for auxiliary contacts • of magnet coil | Connection bar screw-type terminals Screw-type terminals screw terminal |
| width of connection bar | 17 mm |
| thickness of connection bar | 3 mm |
| diameter of holes | 9 mm |
| number of holes | 1 |
| type of connectable conductor cross-sections • for AWG cables for main contacts | 4 ... 250 kcmil |
| connectable conductor cross-section for main contacts • stranded | 25 ... 120 mm2 |
| connectable conductor cross-section for auxiliary contacts • solid or stranded • finely stranded with core end processing | 0.5 ... 4 mm2 0.5 ... 2.5 mm2 |
| type of connectable conductor cross-sections • for auxiliary contacts — solid — solid or stranded — finely stranded with core end processing | 2x (0.5 ... 1.5 mm2), 2x (0.75 ... 2.5 mm2), max. 2x (0.75 ... 4 mm2) 2x (0.5 ... 1.5 mm2), 2x (0.75 ... 2.5 mm2), max. 2x (0.75 ... 4 mm2) 2x (0.5 ... 1.5 mm2), 2x (0.75 ... 2.5 mm2) 2x (20 ... 16), 2x (18 ... 14), 1x 12 |
| AWG number as coded connectable conductor cross section for auxiliary contacts | 18 ... 14 |
| product function · mirror contact according to IEC 60947-4-1 • positively driven operation according to IEC 60947-5-1 • suitable for safety function | Yes No |
| suitability for use safety-related switching OFF | Yes |
| service life maximum | 20 a |
| test wear-related service life necessary | Yes |
| proportion of dangerous failures • with low demand rate according to SN 31920 • with high demand rate according to SN 31920 | 40 % 73 % |
| B10 value with high demand rate according to SN 31920 | 1 000 000 |
| failure rate [FIT] with low demand rate according to SN 31920 | 100 FIT |
| device type according to ISO 13849-1 | 3 |
| overdimensioning according to ISO 13849-2 necessary | Yes |
| safety device type according to IEC 61508-2 | Type A |
| touch protection on the front according to IEC 60529 | finger-safe, for vertical contact from the front with box terminal/cover |
| Environmental Product Declaration · global warming potential [CO2 eq] / during manufacturing • global warming potential [CO2 eq] / during sales • global warming potential [CO2 eq] / during operation • global warming potential [CO2 eq] / after end of life • global warming potential [CO2 eq] / total | 17 kg 0.901 kg 363 kg -2.28 kg 379 kg |
Source: manufacturer data · Last verified: 28 Oct 2026
Documents
Documents for 3RT1055-6AP36 6
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Datasheet
ProductDownload PDF: Product data sheet 3RT1055-6AP36 (TED)
Product data sheet 3RT1055-6AP36 (TED)
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Certificate
ProductDownload PDF: Type Test Certificate ( according Product-Standards ) TC 0046-01
Type Test Certificate ( according Product-Standards ) TC 0046-01
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Certificate
ProductDownload PDF: UL Certificate of Compliance E31519
UL Certificate of Compliance E31519
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Certificate
ProductDownload PDF: cURus Certificate of Compliance - A2L - UL 60335-2-40 Annex JJ E14900
cURus Certificate of Compliance - A2L - UL 60335-2-40 Annex JJ E14900
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Application note
ProductDownload PDF: Characteristic curve Electrical service life, A5W02955462000E
Characteristic curve Electrical service life, A5W02955462000E
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Application note
ProductDownload PDF: Safety characteristics - standard B10 values/failure rates of electromechanical SIRIUS and SENTRON products
Safety characteristics - standard B10 values/failure rates of electromechanical SIRIUS and SENTRON products
Certifications
Certifications and standards
- Marine
- UL
Quick answers
Questions about the 3RT1055-6AP36
What is the rated current of 3RT1055-6AP36?
The rated current of 3RT1055-6AP36 is 150 A (AC-3, 400 V).
Which supply voltage is 3RT1055-6AP36 rated for?
The rated operational voltage of 3RT1055-6AP36 is 1000 V AC.
What motor power is 3RT1055-6AP36 rated for?
The rated motor power of 3RT1055-6AP36 is 75 kW (AC-3, 400 V).
Which control voltage does 3RT1055-6AP36 need?
The control voltage range of 3RT1055-6AP36 is 220–240 V AC/DC.
What is the EAN of 3RT1055-6AP36?
The EAN (GTIN) of 3RT1055-6AP36 is 4011209507333.
Where does 3RT1055-6AP36 ship from, and how fast?
3RT1055-6AP36 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1 business day.
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Series
Siemens SIRIUS 3RT1
- Brand
- Siemens
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- SIRIUS 3RT1
