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Siemens 3RT2028-2FB44-3MA0

power contactor, AC-3e/AC-3, 38 A, 18.5 kW / 400 V, 3-pole, 24 V DC, with plugged-in diode combination, auxiliary contacts: 2 NO + 2 NC, spring-loaded terminal, size: S0, captive auxiliary switch

SiemensMFR # 3RT2028-2FB44-3MA0SKU # CEY-8EF3B0393CA6

product brand nameSIRIUS

product designationPower contactor

product type designation3RT2

size of contactorS0

function module for communicationNo

auxiliary switchNo

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About This Product

power contactor, AC-3e/AC-3, 38 A, 18.5 kW / 400 V, 3-pole, 24 V DC, with plugged-in diode combination, auxiliary contacts: 2 NO + 2 NC, spring-loaded terminal, size: S0, captive auxiliary switch

Siemens 3RT2028-2FB44-3MA0

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Specifications

product brand nameSIRIUS

product designationPower contactor

product type designation3RT2

General technical data

size of contactorS0

function module for communicationNo

auxiliary switchNo

at AC in hot operating state9.6 W

at AC in hot operating state per pole3.2 W

without load current share typical5.9 W

type of calculation of power loss current-dependentquadratic

of main circuit with degree of pollution 3 rated value690 V

of auxiliary circuit with degree of pollution 3 rated value690 V

of main circuit rated value6 kV

of auxiliary circuit rated value6 kV

maximum permissible voltage for protective separation between coil and main contacts according to EN 60947-1400 V

at DC10g / 5 ms, 7,5g / 10 ms

at DC15 g / 5 ms, 10 g / 10 ms

of contactor typical10 000 000

of the contactor with added electronically optimized auxiliary switch block typical5 000 000

of the contactor with added auxiliary switch block typical10 000 000

reference code according to IEC 81346-2Q

Substance Prohibitance (day/month/year)10/01/2009

SVHC substance name2-(2H-benzotriazol-2-yl)-4-(1,1,3,3-tetramethylbutyl)phenol (UV-329) CAS-No. 3147-75-9

Net Weight0.679 kg

Ambient conditions

installation altitude at height above sea level maximum2 000 m

during operation-25 ... +60 °C

during storage-55 ... +80 °C

relative humidity minimum10 %

relative humidity at 55 °C according to IEC 60068-2-30 maximum95 %

Main circuit

number of poles for main current circuit3

number of NO contacts for main contacts3

number of NC contacts for main contacts0

at AC-3 rated value maximum690 V

at AC-3e rated value maximum690 V

at AC-1 at 400 V at ambient temperature 40 °C rated value50 A

— up to 690 V at ambient temperature 40 °C rated value50 A

— up to 690 V at ambient temperature 60 °C rated value42 A

— at 400 V rated value38 A

— at 500 V rated value32 A

— at 690 V rated value21 A

— at 400 V rated value38 A

— at 500 V rated value32 A

— at 690 V rated value21 A

at AC-4 at 400 V rated value22 A

at AC-5a up to 690 V rated value44 A

at AC-5b up to 400 V rated value31.5 A

— up to 230 V for current peak value n=20 rated value30.8 A

— up to 400 V for current peak value n=20 rated value30.8 A

— up to 500 V for current peak value n=20 rated value30.8 A

— up to 690 V for current peak value n=20 rated value21 A

— up to 230 V for current peak value n=30 rated value20.5 A

— up to 400 V for current peak value n=30 rated value20.5 A

— up to 500 V for current peak value n=30 rated value21.4 A

— up to 690 V for current peak value n=30 rated value21 A

minimum cross-section in main circuit at maximum AC-1 rated value10 mm²

at 400 V rated value12 A

at 690 V rated value12 A

— at 24 V rated value35 A

— at 60 V rated value20 A

— at 110 V rated value4.5 A

— at 220 V rated value1 A

— at 440 V rated value0.4 A

— at 600 V rated value0.25 A

— at 24 V rated value35 A

— at 60 V rated value35 A

— at 110 V rated value35 A

— at 220 V rated value5 A

— at 440 V rated value1 A

— at 600 V rated value0.8 A

— at 24 V rated value35 A

— at 60 V rated value35 A

— at 110 V rated value35 A

— at 220 V rated value35 A

— at 440 V rated value2.9 A

— at 600 V rated value1.4 A

— at 24 V rated value20 A

— at 60 V rated value5 A

— at 110 V rated value2.5 A

— at 220 V rated value1 A

— at 440 V rated value0.09 A

— at 600 V rated value0.06 A

— at 24 V rated value35 A

— at 60 V rated value35 A

— at 110 V rated value15 A

— at 220 V rated value3 A

— at 440 V rated value0.27 A

— at 600 V rated value0.16 A

— at 24 V rated value35 A

— at 60 V rated value35 A

— at 110 V rated value35 A

— at 220 V rated value10 A

— at 440 V rated value0.6 A

— at 600 V rated value0.6 A

at AC-2 at 400 V rated value18.5 kW

— at 230 V rated value11 kW

— at 400 V rated value18.5 kW

— at 500 V rated value18.5 kW

— at 690 V rated value18.5 kW

— at 230 V rated value11 kW

— at 400 V rated value18.5 kW

— at 500 V rated value18.5 kW

— at 690 V rated value18.5 kW

at 400 V rated value6 kW

at 690 V rated value10.3 kW

up to 230 V for current peak value n=20 rated value12.2 kVA

up to 400 V for current peak value n=20 rated value21.3 kVA

up to 500 V for current peak value n=20 rated value26.6 kVA

up to 690 V for current peak value n=20 rated value25 kVA

up to 230 V for current peak value n=30 rated value8.1 kVA

up to 400 V for current peak value n=30 rated value14.2 kVA

up to 500 V for current peak value n=30 rated value18.5 kVA

up to 690 V for current peak value n=30 rated value25 kVA

limited to 1 s switching at zero current maximum593 A; Use minimum cross-section acc. to AC-1 rated value

limited to 5 s switching at zero current maximum341 A; Use minimum cross-section acc. to AC-1 rated value

limited to 10 s switching at zero current maximum260 A; Use minimum cross-section acc. to AC-1 rated value

limited to 30 s switching at zero current maximum199 A; Use minimum cross-section acc. to AC-1 rated value

limited to 60 s switching at zero current maximum162 A; Use minimum cross-section acc. to AC-1 rated value

at DC1 500 1/h

at AC-1 maximum1 000 1/h

at AC-2 maximum750 1/h

at AC-3 maximum750 1/h

— maximum750 1/h

at AC-4 maximum250 1/h

Control circuit/ Control

type of voltage of the control supply voltageDC

control supply voltage at DC rated value24 V

initial value0.8

full-scale value1.1

design of the surge suppressorwith diode assemblies

closing power of magnet coil at DC5.9 W

holding power of magnet coil at DC5.9 W

at DC50 ... 170 ms

at DC15 ... 18 ms

arcing time10 ms

control version of the switch operating mechanismStandard A1 - A2

Auxiliary circuit

design of the auxiliary switchon the front, non-detachable

number of NC contacts for auxiliary contacts instantaneous contact2

number of NO contacts for auxiliary contacts instantaneous contact2

operational current at AC-12 maximum10 A

at 230 V rated value6 A

at 400 V rated value3 A

at 500 V rated value2 A

at 690 V rated value1 A

at 24 V rated value10 A

at 48 V rated value6 A

at 60 V rated value6 A

at 110 V rated value3 A

at 125 V rated value2 A

at 220 V rated value1 A

at 600 V rated value0.15 A

at 24 V rated value6 A

at 48 V rated value2 A

at 60 V rated value2 A

at 110 V rated value1 A

at 125 V rated value0.9 A

at 220 V rated value0.3 A

at 600 V rated value0.1 A

contact reliability of auxiliary contacts1 faulty switching per 100 million (17 V, 1 mA)

UL/CSA ratings

at 480 V rated value34 A

at 600 V rated value27 A

— at 110/120 V rated value3 hp

— at 230 V rated value5 hp

— at 200/208 V rated value10 hp

— at 220/230 V rated value10 hp

— at 460/480 V rated value25 hp

— at 575/600 V rated value25 hp

contact rating of auxiliary contacts according to ULA600 / Q600

UL File Number (CCN)E31519 (NLDX, NLDX7)

Short-circuit protection

design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 VC characteristic: 10 A; 0.4 kA

— with type of coordination 1 requiredgG: 125 A (690 V,100 kA), aM: 50 A (690 V,100 kA), BS88: 125 A (415 V,80 kA)

— with type of coordination 2 requiredgG: 50 A (690 V, 100 kA), aM: 25 A (690 V, 100 kA), BS88: 50 A (415 V, 80 kA)

for short-circuit protection of the auxiliary switch requiredgG: 10 A (500 V, 1 kA)

Installation/ mounting/ dimensions

mounting position+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface

fastening method side-by-side mountingYes

fastening methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715

height102 mm

width45 mm

depth154 mm

— forwards10 mm

— upwards10 mm

— downwards10 mm

— at the side0 mm

— forwards10 mm

— upwards10 mm

— at the side6 mm

— downwards10 mm

— forwards10 mm

— upwards10 mm

— downwards10 mm

— at the side6 mm

Connections/ Terminals

for main current circuitspring-loaded terminals

for auxiliary and control circuitspring-loaded terminals

at contactor for auxiliary contactsSpring-type terminals

of magnet coilSpring-loaded terminal

— solid2x (1 ... 10 mm²)

— solid or stranded2x (1 ... 10 mm²)

— finely stranded with core end processing2x (1 ... 6 mm²)

— finely stranded without core end processing2x (1 ... 6 mm²)

for AWG cables for main contacts2x (18 ... 8)

solid1 ... 10 mm²

stranded1 ... 10 mm²

finely stranded with core end processing1 ... 6 mm²

finely stranded without core end processing1 ... 6 mm²

solid or stranded0.5 ... 2.5 mm²

finely stranded with core end processing0.5 ... 1.5 mm²

finely stranded without core end processing0.5 ... 2.5 mm²

— solid or stranded2x (0.5 ... 2.5 mm²)

— finely stranded with core end processing2x (0.5 ... 1.5 mm²)

— finely stranded without core end processing2x (0.5 ... 2.5 mm²)

for AWG cables for auxiliary contacts2x (20 ... 14)

AWG number as coded connectable conductor cross section for main contacts18 ... 8

AWG number as coded connectable conductor cross section for auxiliary contacts20 ... 14

Safety related data

mirror contact according to IEC 60947-4-1Yes

positively driven operation according to IEC 60947-5-1No

suitable for safety functionYes

suitability for use safety-related switching OFFYes

service life maximum20 a

test wear-related service life necessaryYes

with low demand rate according to SN 3192040 %

with high demand rate according to SN 3192073 %

B10 value with high demand rate according to SN 319201 000 000

failure rate [FIT] with low demand rate according to SN 31920100 FIT

ISO 13849

device type according to ISO 13849-13

overdimensioning according to ISO 13849-2 necessaryYes

IEC 61508

safety device type according to IEC 61508-2Type A

Electrical Safety

protection class IP on the front according to IEC 60529IP20

touch protection on the front according to IEC 60529finger-safe, for vertical contact from the front

Approvals Certificates

global warming potential [CO2 eq] / during manufacturing2.65 kg

global warming potential [CO2 eq] / during operation219 kg

global warming potential [CO2 eq] / after end of life-0.639 kg

global warming potential [CO2 eq] / total221 kg

Accessories 88

Genuine accessories that can be used with the Siemens 3RT2028-2FB44-3MA0 motor and are supplied separately are listed below. Click a code to open the accessory page and see the other compatible motors.

Part no	Description	Compatible motors
3RV2925-5AB	Aksesuar · Plugs, adapters and terminals · infeed terminals
3RT2926-1ER00	Aksesuar · Surge suppressor · diode assemblies
3RH2911-2HA22	Aksesuar · Auxiliary switch · auxiliary switches
3RT2926-3AB31	Aksesuar · Latching blocks · mechanical latching blocks
3RH2911-2FA22	Aksesuar · Auxiliary switch · auxiliary switches
3RT2926-1CB00	Aksesuar · Surge suppressor · RC elements
3RH2911-2XA22-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2FA40	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2HA11	Aksesuar · Auxiliary switch · auxiliary switches
3RH2921-2DE11	Aksesuar · Auxiliary switch · auxiliary switches
3RA2922-2H	Aksesuar · Wiring modules, connectors and kits · wiring kits
3RH2911-2HA31	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2HA12	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2XA40-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2HA01	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2XA31-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RT1926-4P	Aksesuar · Miscellaneous accessories · adapters
3RH2914-2GP11	Aksesuar · Coupling links · coupling links
3RT2900-1SB10	Aksesuar · Miscellaneous accessories · labeling plates
3RA2813-2FW10	Aksesuar
3RA2926-1A	Aksesuar · Wiring modules, connectors and kits · link modules
3RT2916-4MA10	Aksesuar · Sealing covers · sealing covers
3RT2900-1SB20	Aksesuar · Miscellaneous accessories · labeling plates
3RT2926-4MC00	Aksesuar · Miscellaneous accessories · Control Kits
3RT2900-1SB60	Aksesuar · Miscellaneous accessories · labeling plates
3RA2816-0EW20	Aksesuar
3RT2926-1QT00	Aksesuar · LED modules · LED display indicator modules
3RT2926-3AF31	Aksesuar · Latching blocks · mechanical latching blocks
3RT2926-3AP31	Aksesuar · Latching blocks · mechanical latching blocks
3RT2927-2PA01	Aksesuar · Pneumatic delay blocks · pneumatic delay blocks
3RT2926-4RA12	Aksesuar · Coil connection modules · coil connection modules
3RT2927-2PR01	Aksesuar · Pneumatic delay blocks · pneumatic delay blocks
3RH2911-2NE21	Aksesuar · Auxiliary switch · auxiliary switches
3RT2916-2BE01	Aksesuar · OFF-delay device · OFF-delay device
3RT2916-2BK01	Aksesuar · OFF-delay device · OFF-delay device
3RT2916-2BL01	Aksesuar · OFF-delay device · OFF-delay device
3RT2926-4BA32	Aksesuar · Terminals · circuit connections
3RT2926-4BB31	Aksesuar · Terminals · circuit connections
3RT2926-1MR00	Aksesuar · Surge suppressor · diode assemblies
3RT2926-4RB12	Aksesuar · Coil connection modules · coil connection modules
3RH2911-2FA04	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2FB22-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2XA04-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2XA11-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2XA13-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2XA20-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2XB22-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RH2916-2XA22-0MA0	Aksesuar · Auxiliary switch · auxiliary switches
3RT2927-2PA11	Aksesuar · Pneumatic delay blocks · pneumatic delay blocks
3RT2927-2PR11	Aksesuar · Pneumatic delay blocks · pneumatic delay blocks
3RH2911-2NL22	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2NL40	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2NM31	Aksesuar · Auxiliary switch · auxiliary switches
3RR2142-2AA30	Aksesuar
3RR2142-2AW30	Aksesuar
3RR2242-2FA30	Aksesuar
3RR2442-2AA40	Aksesuar
3RH2911-2HA30	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2HA21	Aksesuar · Auxiliary switch · auxiliary switches
3RA2923-3DA2	Aksesuar · Wiring modules, connectors and kits · wiring kits
3RH2911-2HA03	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2NF22	Aksesuar · Auxiliary switch · auxiliary switches
3RH2916-2FA22	Aksesuar · Auxiliary switch · auxiliary switches
3RA2923-2AA2	Aksesuar · Wiring modules, connectors and kits · wiring kits
3RA2923-2BB2	Aksesuar · Wiring modules, connectors and kits · wiring kits
3RA2811-2CW10	Aksesuar
3RA2812-2DW10	Aksesuar
3RA2813-2AW10	Aksesuar
3RA2814-2AW10	Aksesuar
3RA2814-2FW10	Aksesuar
3RA2815-2AW10	Aksesuar
3RA2815-2FW10	Aksesuar
3RA2908-1A	Aksesuar · Miscellaneous accessories · screwdrivers
3RH2911-2HA10	Aksesuar · Auxiliary switch · auxiliary switches
3RR2242-2FW30	Aksesuar
3RH2911-2HA02	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2HA20	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2FB11	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2FB22	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2FC22	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2HA13	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2NF02	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2NF11	Aksesuar · Auxiliary switch · auxiliary switches
3RH2911-2NF20	Aksesuar · Auxiliary switch · auxiliary switches
3RH2921-2DA11	Aksesuar · Auxiliary switch · auxiliary switches
3RH2921-2DA02	Aksesuar · Auxiliary switch · auxiliary switches
3RH2921-2DA20	Aksesuar · Auxiliary switch · auxiliary switches
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