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Siemens 3RT2025-1BB40 Power Contactor 17A, 7.5kW, 3-Pole, 24V DC, S0 Size
Siemens 3RT2025-1BB40 Power Contactor 17A, 7.5kW, 3-Pole, 24V DC, S0 Size
Siemens 3RT2025-1BB40 Power Contactor 17A, 7.5kW, 3-Pole, 24V DC, S0 Size
Siemens 3RT2025-1BB40 Power Contactor 17A, 7.5kW, 3-Pole, 24V DC, S0 Size
Siemens 3RT2025-1BB40 Power Contactor 17A, 7.5kW, 3-Pole, 24V DC, S0 Size
Siemens 3RT2025-1BB40 Power Contactor 17A, 7.5kW, 3-Pole, 24V DC, S0 Size

SIEMENS

Siemens 3RT2025-1BB40 Power Contactor 17A, 7.5kW, 3-Pole, 24V DC, S0 Size Original Brand New

Model / SKU3RT2025-1BB40

Power contactor, AC-3e/AC-3, 17 A, 7.5 kW / 400 V, 3-pole, 24 V DC coil, 1 NO + 1 NC auxiliary contacts, screw terminals, size S0.

Original price was: $158.93.Current price is: $88.90.
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  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 3RT2025-1BB40 is a high-performance 3-pole power contactor designed for reliable motor switching in industrial and commercial applications. Engineered for AC-3e/AC-3 operation, it supports up to 17 A and 7.5 kW at 400 V, making it ideal for demanding motor control tasks. Equipped with 1 NO + 1 NC auxiliary contacts, durable screw terminals, and compact S0 size, this contactor is built for efficiency, long service life, and seamless integration into automation systems.

Benefit

  • Reliable Motor Switching: Optimized for AC-3e/AC-3 duty, ensuring consistent performance with induction motors.

  • Efficient & Compact Design: S0-size footprint for space-saving control panel installation.

  • High Durability: Robust Siemens engineering increases operational safety and lifespan.

  • Flexible Integration: Features both normally-open (NO) and normally-closed (NC) auxiliary contacts for broad compatibility.

  • Quick Installation: Screw terminals and user-friendly layout enable fast wiring and setup.

Function

  • Motor Control: Switching, controlling, and protecting motors up to 7.5 kW at 400 V.

  • Electrical Isolation: Provides safe disconnection between control and power circuitry.

  • Auxiliary Signaling: Built-in 1 NO + 1 NC auxiliary contact for feedback, monitoring, and system coordination.

  • Automation Integration: Ideal for use in control cabinets, starter combinations, and industrial automation systems.

Technical Specification

  • Product Number: Siemens 3RT2025-1BB40

  • Type: Power Contactor

  • Usage Category: AC-3e / AC-3

  • Rated Current: 17 A

  • Rated Power: 7.5 kW (at 400 V)

  • Poles: 3-pole

  • Control Voltage: 24 V DC

  • Auxiliary Contacts: 1 NO + 1 NC

  • Terminal Type: Screw terminal

  • Size: S0

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Specifications

SKU / Model3RT2025-1BB40
BrandSIEMENS
product brand nameSIRIUS
product designationPower contactor
product type designation3RT2
size of contactorS0
product extension-
● function module for communicationNo
● auxiliary switchYes
power loss [W] for rated value of the current at AC in hot operating state2.7 W
● per pole0.9 W
power loss [W] for rated value of the current without load current share typical5.9 W
surge voltage resistance-
● of main circuit rated value6 kV
● of auxiliary circuit rated value6 kV
maximum permissible voltage for safe isolation between coil and main contacts acc. to EN 60947-1400 V
shock resistance at rectangular impulse-
shock resistance with sine pulse-
mechanical service life (switching cycles)-
● 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 acc. to IEC 81346-2Q
installation altitude at height above sea level maximum2 000 m
ambient temperature-
● during operation-25 ... +60 °C
● during storage-55 ... +80 °C
relative humidity minimum10 %
relative humidity at 55 °C acc. to IEC 60068-2-30 maximum95 %
number of poles for main current circuit3
number of NO contacts for main contacts3
operating voltage at AC-3 rated value maximum690 V
● at AC-1 at 400 V at ambient temperature 40 °C rated value40 A
● at AC-1-
— up to 690 V at ambient temperature 40 °C rated value40 A
— up to 690 V at ambient temperature 60 °C rated value35 A
● at AC-4 at 400 V rated value15.5 A
● at AC-5a up to 690 V rated value35.2 A
● at AC-5b up to 400 V rated value14.1 A
— up to 230 V for current peak value n=20 rated value11.4 A
— up to 400 V for current peak value n=20 rated value11.4 A
— up to 500 V for current peak value n=20 rated value11.4 A
— up to 690 V for current peak value n=20 rated value11.3 A
● at AC-6a-
— up to 230 V for current peak value n=30 rated value7.6 A
— up to 400 V for current peak value n=30 rated value7.6 A
— up to 500 V for current peak value n=30 rated value7.6 A
— up to 690 V for current peak value n=30 rated value7.6 A
minimum cross-section in main circuit at maximum AC-1 rated value10 mm²
operational current for approx. 200000 operating cycles at AC-4-
operational current-
● at 1 current path at DC-1-
● with 2 current paths in series at DC-1-
● with 3 current paths in series at DC-1-
● at 1 current path at DC-3 at DC-5-
● with 2 current paths in series at DC-3 at DC-5-
● with 3 current paths in series at DC-3 at DC-5-
— at 24 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
operating power-
● at AC-3-
— at 400 V rated value7.5 kW
— at 500 V rated value7.5 kW
— at 690 V rated value11 kW
operating power for approx. 200000 operating cycles at AC-4-
● up to 230 V for current peak value n=20 rated value4.5 kV·A
● up to 400 V for current peak value n=20 rated value7.8 kV·A
● up to 500 V for current peak value n=20 rated value9.9 kV·A
● up to 690 V for current peak value n=20 rated value13.6 kV·A
operating apparent power at AC-6a-
● up to 230 V for current peak value n=30 rated value3 kV·A
● up to 400 V for current peak value n=30 rated value5.2 kV·A
● up to 500 V for current peak value n=30 rated value6.6 kV·A
● up to 690 V for current peak value n=30 rated value9.1 kV·A
short-time withstand current in cold operating state up to 40 °C-
● limited to 1 s switching at zero current maximum225 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 5 s switching at zero current maximum225 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 10 s switching at zero current maximum180 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 30 s switching at zero current maximum115 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 60 s switching at zero current maximum96 A; Use minimum cross-section acc. to AC-1 rated value
no-load switching frequency-
operating frequency-
● at AC-1 maximum1 000 1/h
● at AC-2 maximum1 000 1/h
● at AC-3 maximum1 000 1/h
● at AC-4 maximum300 1/h
type of voltage of the control supply voltageDC
control supply voltage at DC-
● rated value24 V
operating range factor control supply voltage rated value of magnet coil at DC-
● initial value0.8
● full-scale value1.1
closing power of magnet coil at DC5.9 W
holding power of magnet coil at DC5.9 W
closing delay-
opening delay-
● at DC15 ... 17.5 ms
arcing time10 ... 10 ms
control version of the switch operating mechanismStandard A1 - A2
number of NC contacts for auxiliary contacts instantaneous contact1
number of NO contacts for auxiliary contacts instantaneous contact1
operational current at AC-12 maximum10 A
operational current at AC-15-
● at 230 V rated value10 A
● at 400 V rated value3 A
● at 500 V rated value2 A
● at 690 V rated value1 A
operational current at DC-12-
operational current at DC-13-
● at 24 V rated value10 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
contact reliability of auxiliary contacts1 faulty switching per 100 million (17 V, 1 mA)
full-load current (FLA) for 3-phase AC motor-
● at 480 V rated value14 A
● at 600 V rated value17 A
yielded mechanical performance [hp]-
● for single-phase AC motor-
— at 110/120 V rated value1 hp
— at 230 V rated value3 hp
● for 3-phase AC motor-
— at 200/208 V rated value3 hp
— at 220/230 V rated value5 hp
— at 460/480 V rated value10 hp
— at 575/600 V rated value15 hp
contact rating of auxiliary contacts according to ULA600 / P600
design of the fuse link-
● for short-circuit protection of the main circuit-
— with type of coordination 1 requiredgG: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)
— with type of assignment 2 requiredgG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (415V,80kA)
● for short-circuit protection of the auxiliary switch requiredgG: 10 A (500 V, 1 kA)
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 standard mounting rail according to DIN EN 60715
● side-by-side mountingYes
required spacing-
● with side-by-side mounting-
● for grounded parts-
● for live parts-
— forwards10 mm
— upwards10 mm
— downwards10 mm
— at the side6 mm
type of electrical connection-
● for main current circuitscrew-type terminals
● for auxiliary and control circuitscrew-type terminals
● at contactor for auxiliary contactsScrew-type terminals
● of magnet coilScrew-type terminals
— solid2x (1 ... 2.5 mm²), 2x (2.5 ... 10 mm²)
● at AWG cables for main contacts2x (16 ... 12), 2x (14 ... 8)
connectable conductor cross-section for main contacts-
● solid1 ... 10 mm²
● stranded1 ... 10 mm²
connectable conductor cross-section for auxiliary contacts-
● solid or stranded0.5 ... 2.5 mm²
● finely stranded with core end processing0.5 ... 2.5 mm²
type of connectable conductor cross-sections-
— solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
— finely stranded with core end processing2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
● at AWG cables for auxiliary contacts2x (20 ... 16), 2x (18 ... 14)
AWG number as coded connectable conductor cross section-
● for main contacts16 ... 8
● for auxiliary contacts20 ... 14
B10 value with high demand rate acc. to SN 31920450 000
proportion of dangerous failures-
● with low demand rate acc. to SN 3192040 %
● with high demand rate acc. to SN 3192073 %
failure rate [FIT] with low demand rate acc. to SN 31920100 FIT
T1 value for proof test interval or service life acc. to IEC 6150820 y
protection class IP on the front acc. to IEC 60529IP20
touch protection on the front acc. to IEC 60529finger-safe, for vertical contact from the front
suitability for use-
● safety-related switching OFFYes
Test CertificatesMarine / Shipping
last modified:11/27/2021
Weight0.597 kg
Dimensions54.00 × 92.00 × 115.50 mm

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