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Siemens 3RT2026-2BB40 Power Contactor 25A, 3-Pole, 11kW/400V, 24V DC, 1 NO + 1 NC
Siemens 3RT2026-2BB40 Power Contactor 25A, 3-Pole, 11kW/400V, 24V DC, 1 NO + 1 NC
Siemens 3RT2026-2BB40 Power Contactor 25A, 3-Pole, 11kW/400V, 24V DC, 1 NO + 1 NC
Siemens 3RT2026-2BB40 Power Contactor 25A, 3-Pole, 11kW/400V, 24V DC, 1 NO + 1 NC
Siemens 3RT2026-2BB40 Power Contactor 25A, 3-Pole, 11kW/400V, 24V DC, 1 NO + 1 NC
Siemens 3RT2026-2BB40 Power Contactor 25A, 3-Pole, 11kW/400V, 24V DC, 1 NO + 1 NC

SIEMENS

Siemens 3RT2026-2BB40 Power Contactor 25A, 3-Pole, 11kW/400V, 24V DC, 1 NO + 1 NC Original Brand New

Model / SKU3RT2026-2BB40

High-performance 3-pole power contactor designed for switching motors and power circuits. Rated for 25 A and 11 kW at 400 V, this Size S0 contactor features a 24V DC coil and reliable spring-loaded terminals for vibration-proof connections.

Original price was: $189.86.Current price is: $106.20.
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  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 3RT2026-2BB40 is a high-performance power contactor designed for reliable and efficient control of AC motors and industrial applications. Engineered for durability and precision, this contactor supports AC-3e/AC-3 duty and can handle up to 25 A and 11 kW at 400 V, making it ideal for medium-load electrical circuits.

Equipped with a 3-pole design, 24 V DC coil, and auxiliary contacts (1 NO + 1 NC), it ensures flexible integration into a wide range of control systems. The spring-loaded terminals simplify wiring and maintenance, while the S0 size allows compact installation in standard switchgear assemblies.

Benefit

  • Reliability: High contact reliability ensures a long service life for your industrial machinery.

  • Time Saving: The spring-loaded terminal system cuts wiring time by up to 50% compared to screw terminals.

  • Global Standards: Fully compliant with IEC, UL, and CSA standards for worldwide application.

  • Modular: Easily expandable with clip-on function modules and surge suppressors.

Key Features & Function

  • Versatile Switching: Optimized for AC-3e/AC-3 (motor switching) and AC-1 (resistive loads).

  • Integrated Auxiliary Contacts: Equipped with 1 NO (Normally Open) + 1 NC (Normally Closed) auxiliary contacts for signaling and interlocking.

  • Spring-Loaded Terminals: Provides secure, fast, and maintenance-free connections, ideal for high-vibration environments.

  • DC Control: Operates on a standard 24V DC control voltage for seamless PLC integration.

  • Compact Design: Size S0 footprint allows for high-density mounting in control cabinets.

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Datasheet in PDF

Specifications

SKU / Model3RT2026-2BB40
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 state4.8 W
● per pole1.6 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 value20.7 A
— up to 230 V for current peak value n=20 rated value20.2 A
— up to 400 V for current peak value n=20 rated value20.2 A
— up to 500 V for current peak value n=20 rated value20.2 A
— up to 690 V for current peak value n=20 rated value12.9 A
● at AC-6a-
— up to 230 V for current peak value n=30 rated value13.5 A
— up to 400 V for current peak value n=30 rated value13.5 A
— up to 500 V for current peak value n=30 rated value13.5 A
— up to 690 V for current peak value n=30 rated value13 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 value11 kW
— at 500 V rated value11 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 value8 kV·A
● up to 400 V for current peak value n=20 rated value13.9 kV·A
● up to 500 V for current peak value n=20 rated value17.4 kV·A
● up to 690 V for current peak value n=20 rated value15.4 kV·A
operating apparent power at AC-6a-
● up to 230 V for current peak value n=30 rated value5.3 kV·A
● up to 400 V for current peak value n=30 rated value9.3 kV·A
● up to 500 V for current peak value n=30 rated value11.6 kV·A
● up to 690 V for current peak value n=30 rated value15.5 kV·A
short-time withstand current in cold operating state up to 40 °C-
● limited to 1 s switching at zero current maximum375 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 5 s switching at zero current maximum299 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 10 s switching at zero current maximum200 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 30 s switching at zero current maximum128 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 60 s switching at zero current maximum106 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 maximum750 1/h
● at AC-3 maximum750 1/h
● at AC-4 maximum250 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 value21 A
● at 600 V rated value22 A
yielded mechanical performance [hp]-
● for single-phase AC motor-
— at 110/120 V rated value2 hp
— at 230 V rated value3 hp
● for 3-phase AC motor-
— at 200/208 V rated value5 hp
— at 220/230 V rated value7.5 hp
— at 460/480 V rated value15 hp
— at 575/600 V rated value20 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: 100 A (690 V, 100 kA), aM: 50 A (690 V, 100 kA), BS88: 100 A (415 V, 80 kA)
— with type of assignment 2 requiredgG: 35A (690V, 100kA), aM: 20A (690V, 100kA), BS88: 35A (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 circuitspring-loaded terminals
● for auxiliary and control circuitspring-loaded terminals
● at contactor for auxiliary contactsSpring-type terminals
● of magnet coilSpring-type terminals
— solid2x (1 ... 10 mm²)
● at AWG cables for main contacts2x (18 ... 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 ... 1.5 mm²
● finely stranded without core end processing0.5 ... 2.5 mm²
type of connectable conductor cross-sections-
— 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)
● at AWG cables for auxiliary contacts2x (20 ... 14)
AWG number as coded connectable conductor cross section-
● for main contacts18 ... 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:11/17/2021
Weight0.638 kg
Dimensions54.00 × 108.50 × 115.50 mm

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