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Datasheet generated 2026-10-07
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Siemens SIRIUS Contactor assembly for star-delta (wye-delta) start AC-3, 15/18.5 kW/400 V 24 V AC, 50/60 Hz, 3-Pole Size S0, Spring-type terminal electrical and mechanical interlock 3 NO + 3 NC integrated (3RA2425-8XF32-2AC2)

Siemens · Electrical Components · Contactors · Germany · siemens.com
Part Number
3RA2425-8XF32-2AC2  ·  HS 8536.49
Siemens SIRIUS Contactor assembly for star-delta (wye-delta) start AC-3, 15/18.5 kW/400 V 24 V AC, 50/60 Hz, 3-Pole Size S0, Spring-type terminal electrical and mechanical interlock 3 NO + 3 NC integrated (3RA2425-8XF32-2AC2)

Siemens 3RA2425-8XF32-2AC2 Star/delta-selector switch 15/18.5KW 24V AC S0 Spring terminals 3O+3C.

Technical Specifications

Manufacturer part number (MPN)3RA2425-8XF32-2AC2
EAN / GTIN4011209838659
Sales unitpcs
Product brand nameSIRIUS
Product designationContactor assembly for star-delta (wye-delta) start
Product type designation3RA24
Manufacturer's article number — 1 of the supplied contactor3RT2026-2AC20
Manufacturer's article number — 2 of the supplied contactor3RT2026-2AC20
Manufacturer's article number — 3 of the supplied contactor3RT2024-2AC20
Manufacturer's article number — of the supplied RS assembly kit3RA2923-2BB2
Manufacturer's article number — of the supplied function module for wye-delta circuits3RA2816-0EW20
Size of contactorS0
Product extension auxiliary switchNo
Shock resistance at rectangular impulse — at AC7,5 g / 5 ms, 4,7 g / 10 ms
Shock resistance at rectangular impulse — at DC10g / 5 ms, 7,5g / 10 ms
Shock resistance with its pulse — at AC11,8 g / 5 ms, 7,4 g / 10 ms
Shock resistance with its pulse — at DC15 g / 5 ms, 10 g / 10 ms
Mechanical service life (operating cycles) — of contactor typical10 000 000
Mechanical service life (operating cycles) — of the contactor with added auxiliary switch block typical10 000 000
Reference code according to IEC 81346-2Q
Installation altitude at height above sea level maximum2 000 m
Ambient temperature — during operation-25 ... +60 °C
Ambient temperature — during storage-55 ... +80 °C
Number of poles for main current circuit3
Number of NO contacts for main contacts3
Number of NC contacts for main contacts0
Operating voltage — at AC-3 rated value maximum690 V
At AC-3 — at 400 V rated value40 A
At AC-3 — at 500 V rated value19 kW
At AC-3 — at 690 V rated value19 kW
Operating frequency — at AC-3 maximum1 000 1/h
Type of voltage of the control supply voltageAC
Control supply voltage 1 at AC — at 50 Hz rated value24 V
Control supply voltage 1 at AC — at 60 Hz rated value24 V
Operating range factor control supply voltage rated value of magnet coil at AC — at 50 Hz0.8 ... 1.1
Operating range factor control supply voltage rated value of magnet coil at AC — at 60 Hz0.8 ... 1.1
Apparent pick-up power of magnet coil at AC — at 50 Hz164 VA
Apparent pick-up power of magnet coil at AC — at 60 Hz160 VA
Inductive power factor with closing power of the coil — at 50 Hz0.72
Inductive power factor with closing power of the coil — at 60 Hz0.74
Apparent holding power of magnet coil at AC — at 50 Hz23 VA
Apparent holding power of magnet coil at AC — at 60 Hz19 VA
Inductive power factor with the holding power of the coil — at 50 Hz0.25
Inductive power factor with the holding power of the coil — at 60 Hz0.28
Number of NC contacts for auxiliary contacts — instantaneous contact3
Number of NO contacts for auxiliary contacts — instantaneous contact3
Contact reliability of auxiliary contacts< 1 error per 100 million operating cycles
Contact rating of auxiliary contacts according to ULA600 / Q600
For short-circuit protection of the main circuit — with type of coordination 1 requiredgG NH 3NA, DIAZED 5SB
NEOZED 5SE100 A
For short-circuit protection of the main circuit — with type of coordination 2 requiredgG NH 3NA, DIAZED 5SB
NEOZED 5SE35 A
For short-circuit protection of the main circuit — for short-circuit protection of the auxiliary switch requiredfuse gG: 10 A
Mounting position+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface
Fastening methodscrew and snap-on mounting onto 35 mm DIN rail
Installation/ mounting/ dimensions — height114 mm
Installation/ mounting/ dimensions — width135 mm
Installation/ mounting/ dimensions — depth171 mm
With side-by-side mounting — forwards6 mm
With side-by-side mounting — backwards0 mm
With side-by-side mounting — upwards6 mm
With side-by-side mounting — downwards6 mm
With side-by-side mounting — at the side6 mm
For grounded parts — forwards6 mm
For grounded parts — backwards0 mm
For grounded parts — upwards6 mm
For grounded parts — at the side6 mm
For grounded parts — downwards6 mm
For live parts — forwards6 mm
For live parts — backwards0 mm
For live parts — upwards6 mm
For live parts — downwards6 mm
For live parts — at the side6 mm
Type of electrical connection — for main current circuitspring-loaded terminals
Type of electrical connection — for auxiliary and control circuitspring-loaded terminals
Type of electrical connection — at contactor for auxiliary contactsSpring-type terminals
Type of electrical connection — of magnet coilSpring-loaded terminal
Type of connectable conductor cross-sections for main contacts — solid2x (1 ... 10 mm²)
Type of connectable conductor cross-sections for main contacts — solid or stranded2x (1 ... 10 mm²)
Type of connectable conductor cross-sections for main contacts — finely stranded with core end processing2x (1 ... 6 mm²)
Type of connectable conductor cross-sections for main contacts — finely stranded without core end processing2x (1 ... 6 mm²)
For auxiliary contacts — solid or stranded2x (0.5 ... 2.5 mm²)
For auxiliary contacts — finely stranded with core end processing2x (0.5 ... 1.5 mm²)
For auxiliary contacts — finely stranded without core end processing2x (0.5 ... 1.5 mm²)
For auxiliary contacts — for AWG cables for auxiliary contacts2x (20 ... 14)
Product function suitable for safety functionYes
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
Product function bus communicationNo
Protocol is supported AS-Interface protocolNo
Product function control circuit interface with IO linkNo
Width135 mm
FunctionStar-delta contactor
Height114 mm
Depth171 mm
Rated operation power at AC-3, 400 V18.5 kW
Number of normally open contacts as main contact3
Rated operation current Ie at AC-3, 400 V40 A
Degree of protection (IP)IP20
Type of electrical connection of main circuitSpring clamp connection
Voltage type for actuatingAC
Country of originGermany

Properties

MOQ1

Cross-References

Attached Documents