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Datasheet generated 2026-10-07
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Star-delta switch (T3-4-3/I2)

Eaton · Switchgear & Protection · Disconnect Switches · Ireland · eaton.com
Part Number
T3-4-3/I2  ·  HS 8536.90
Star-delta switch (T3-4-3/I2)

Eaton T3-4-3/I2 Y/D-selector switch. Enclosed - 7,5 / 18.5 / 22 / 22 kW AC-1 32A.

Technical Specifications

Manufacturer part number (MPN)T3-4-3/I2
EAN / GTIN4015082229061
HS code8536.90
Sales unitpcs
Eaton catalogue number222906
Depth181 mm
Height127 mm
Width100 mm
Weight0.594 kg
CompliancesCE Marked
CertificationsCSA Std. C22.2 No. 14-05; UL 508; EN 60947-3; IEC 60947; VDE; IEC/EN 60204; CSA; IEC/EN 60947; UL File No.: E36332; CE; CSA-C22.2 No. 94; UL Category Control No.: NLRV; IEC/EN 60947-3; UL; CSA File No.: 012528; CSA Class No.: 3211-07; CSA-C22.2 No. 60947-4-1-14; UL 60947-4-1; VDE 0660
Catalog NotesRated Short-time Withstand Current (Icw) for a time of 1 second
Actuator functionMaintained; With 0 (Off) position
Actuator typeShort thumb-grip
Ambient operating temperature - max40 °C
Ambient operating temperature - min-25 °C
Ambient operating temperature (enclosed) - max40 °C
Ambient operating temperature (enclosed) - min-25 °C
Climatic proofingDamp heat, constant, to IEC 60068-2-78; Damp heat, cyclic, to IEC 60068-2-30
Control circuit reliability1 failure per 100,000 switching operations statistically determined, at 24 V DC, 10 mA)
Number of auxiliary contacts (change-over contacts)0
Number of auxiliary contacts (normally closed contacts)0
Number of auxiliary contacts (normally open contacts)0
Number of contacts8
Equipment heat dissipation, current-dependent Pvid0 W
Heat dissipation capacity Pdiss0 W
Heat dissipation per pole, current-dependent Pvid1.1 W
Rated operational current for specified heat dissipation (In)32 A
Static heat dissipation, non-current-dependent Pvs0 W
Rated breaking capacity at 220/230 V (cos phi to IEC 60947-3)260 A
Rated breaking capacity at 400/415 V (cos phi to IEC 60947-3)260 A
Rated breaking capacity at 500 V (cos phi to IEC 60947-3)240 A
Rated breaking capacity at 660/690 V (cos phi to IEC 60947-3)170 A
Rated operational current (Ie)32 A at AC-3, 500 V star-delta; 25.5 A at AC-3, 690 V star-delta; 32 A at AC-3, 400 V star-delta; 32 A at AC-3, 230 V star-delta
Rated operational current (Ie) at AC-21, 440 V32 A
Rated operational current (Ie) at AC-23A, 230 V32 A
Rated operational current (Ie) at AC-23A, 400 V, 415 V32 A
Rated operational current (Ie) at AC-23A, 500 V26.4 A
Rated operational current (Ie) at AC-23A, 690 V17 A
Rated operational current (Ie) at AC-3, 220 V, 230 V, 240 V23.7 A
Rated operational current (Ie) at AC-3, 380 V, 400 V, 415 V23.7 A
Rated operational current (Ie) at AC-3, 500 V23.7 A
Rated operational current (Ie) at AC-3, 660 V, 690 V14.7 A
Rated operational current (Ie) at DC-13, control switches L/R = 50 ms20 A
Rated operational current (Ie) at DC-21, 240 V1 A
Rated operational current (Ie) at DC-23A, 120 V12 A
Rated operational current (Ie) at DC-23A, 24 V25 A
Rated operational current (Ie) at DC-23A, 240 V5 A
Rated operational current (Ie) at DC-23A, 48 V25 A
Rated operational current (Ie) at DC-23A, 60 V25 A
Rated operational power at AC-23A, 220/230 V, 50 Hz7.5 kW
Rated operational power at AC-23A, 400 V, 50 Hz15 kW
Rated operational power at AC-23A, 500 V, 50 Hz15 kW
Rated operational power at AC-23A, 690 V, 50 Hz15 kW
Rated operational power at AC-3, 380/400 V, 50 Hz18.5 kW
Rated operational power at AC-3, 415 V, 50 Hz11 kW
Rated operational power at AC-3, 690 V, 50 Hz11 kW
Rated operational power star-delta at 220/230 V, 50 Hz7.5 kW
Rated operational power star-delta at 380/400 V, 50 Hz15 kW
Rated operational power star-delta at 500 V, 50 Hz18.5 kW
Rated operational power star-delta at 690 V, 50 Hz22 kW
Rated operational voltage (Ue) at AC - max690 V
Rated uninterrupted current (Iu)32 A
Uninterrupted currentRated uninterrupted current Iu is specified for max. cross-section.
Enclosure materialPlastic
FeaturesComplete device in housing
Fitted with0 (off) position; Black thumb grip and front plate
Inscription0-Y-D
Number of poles3
AccessoriesBlack thumb grip and front plate
Degree of protectionNEMA 12; IP65; NEMA 1
Degree of protection (front side)IP65; NEMA 12
Lifespan, mechanical500,000 Operations
ModelStar-delta switch
Mounting methodSurface mounting
Mounting positionAs required
Number of contact units4
Operating frequency1200 Operations/h
Overvoltage categoryIII
Pollution degree3
Product CategoryControl switches
Rated impulse withstand voltage (Uimp)6000 V AC
Safe isolation440 V AC, Between the contacts, According to EN 61140
Safety parameter (EN ISO 13849-1)B10d values as per EN ISO 13849-1, table C.1
Shock resistance12 g, Mechanical, According to IEC/EN 60068-2-27, Half-sinusoidal shock 20 ms
Suitable forGround mounting; Branch circuits, suitable as motor disconnect, (UL/CSA); Front mounting
Switching angle60 °
TypeStar-delta switch
Assigned motor power at 115/120 V, 60 Hz, 1-phase1.5 HP
Assigned motor power at 200/208 V, 60 Hz, 1-phase3 HP
Assigned motor power at 200/208 V, 60 Hz, 3-phase3 HP
Assigned motor power at 230/240 V, 60 Hz, 1-phase3 HP
Assigned motor power at 230/240 V, 60 Hz, 3-phase3 HP
Assigned motor power at 460/480 V, 60 Hz, 3-phase7.5 HP
Assigned motor power at 575/600 V, 60 Hz, 3-phase10 HP
Rated conditional short-circuit current (Iq)1 kA
Rated short-time withstand current (Icw)650 A, Contacts, 1 second
Short-circuit current rating (basic rating)5 kA, SCCR (UL/CSA); 40A, max. Fuse, SCCR (UL/CSA)
Short-circuit current rating (high fault)10 kA, SCCR (UL/CSA); 40 A, Class J, max. Fuse, SCCR (UL/CSA)
Short-circuit protection rating35 A gG/gL, Fuse, Contacts
Load rating1.6 x Iₑ (with intermittent operation class 12, 40 % duty factor); 2 x Iₑ (with intermittent operation class 12, 25 % duty factor); 1.3 x Iₑ (with intermittent operation class 12, 60 % duty factor)
Number of contacts in series at DC-21A, 240 V1
Number of contacts in series at DC-23A, 120 V3
Number of contacts in series at DC-23A, 24 V1
Number of contacts in series at DC-23A, 240 V5
Number of contacts in series at DC-23A, 48 V2
Number of contacts in series at DC-23A, 60 V3
Rated making capacity up to 690 V (cos phi to IEC/EN 60947-3)320 A
Switching capacity (auxiliary contacts, general use)10A, IU, (UL/CSA)
Switching capacity (auxiliary contacts, pilot duty)A600 (UL/CSA); P600 (UL/CSA)
Switching capacity (main contacts, general use)25 A, Rated uninterrupted current max. (UL/CSA)
Voltage per contact pair in series60 V
Screw sizeM4, Terminal screw
Terminal capacity (flexible with ferrule)1 x (0.75 - 4) mm², ferrules to DIN 46228; 2 x (0.75 - 4) mm², ferrules to DIN 46228
Terminal capacity (solid/flexible with ferrule AWG)14 - 10
Terminal capacity (solid/stranded)1 x (1 - 6) mm²; 2 x (1 - 6) mm²
Tightening torque1.6 Nm, Screw terminals; 17.7 lb-in, Screw terminals

Properties

MOQ1

Cross-References

Attached Documents