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Siemens 3RT2018-1BB41 Power Contactor 16A, 7.5 kW, 3-Pole, 24V DC Coil, AC-3/AC-3e, S00 Size
Siemens 3RT2018-1BB41 Power Contactor 16A, 7.5 kW, 3-Pole, 24V DC Coil, AC-3/AC-3e, S00 Size
Siemens 3RT2018-1BB41 Power Contactor 16A, 7.5 kW, 3-Pole, 24V DC Coil, AC-3/AC-3e, S00 Size
Siemens 3RT2018-1BB41 Power Contactor 16A, 7.5 kW, 3-Pole, 24V DC Coil, AC-3/AC-3e, S00 Size
Siemens 3RT2018-1BB41 Power Contactor 16A, 7.5 kW, 3-Pole, 24V DC Coil, AC-3/AC-3e, S00 Size
Siemens 3RT2018-1BB41 Power Contactor 16A, 7.5 kW, 3-Pole, 24V DC Coil, AC-3/AC-3e, S00 Size

SIEMENS

Siemens 3RT2018-1BB41 Power Contactor 16A, 7.5 kW, 3-Pole, 24V DC Coil, AC-3/AC-3e, S00 Size Original Brand New

Model / SKU3RT2018-1BB41

A high-performance SIRIUS power contactor designed for switching motors and general loads. Featuring an operating current of 16A (AC-3e/AC-3), a rated power of 7.5 kW at 400V, and an efficient 24V DC coil. Its compact Size S00 and reliable screw terminal connection make it ideal for panel builders and industrial applications. Includes 1 NO auxiliary contact.

Original price was: $155.22.Current price is: $86.82.
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  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 3RT2018-1BB41 is a high-performance 3-pole power contactor designed for reliable motor control applications. With a 16 A AC-3 rating and 7.5 kW at 400V, it offers robust switching capability suitable for industrial automation, machine building, and control panel installations. Its compact S00 size, reliable 24 V DC coil, and integrated 1 NO auxiliary contact ensure efficient operation, easy installation, and long-term durability.

Benefit

  • High switching reliability for demanding industrial environments

  • Long service life thanks to Siemens’ premium engineering

  • Compact S00 design saves panel space

  • Energy-efficient 24 V DC coil reduces power consumption

  • Universal compatibility with Siemens control systems and other standard components

  • Fast installation with screw-type terminals

Functions & Features

  • AC-3/AC-3e rated contactor for motor starting and controlling

  • Rated operational current: 16 A

  • Motor rating: 7.5 kW at 400 V

  • 3-pole main contacts with additional 1 NO auxiliary contact

  • Coil voltage: 24 V DC

  • Screw terminals for secure wiring

  • Compact S00 size for easy integration into control cabinets

  • Designed to meet international industrial standards

Application

The Siemens 3RT2018-1BB41 contactor is perfect for applications requiring reliable switching and control, including:

  • Controlling 3-phase AC motors in pumps, fans, and compressors.

  • General load switching in heating and lighting systems.

  • Integration into automated machinery and control cabinets.

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Specifications

SKU / Model3RT2018-1BB41
BrandSIEMENS
product brand nameSIRIUS
product designationPower contactor
product type designation3RT2
size of contactorS00
product extension-
● function module for communicationNo
● auxiliary switchYes
power loss [W] for rated value of the current at AC in hot operating state6.6 W
● per pole2.2 W
power loss [W] for rated value of the current without load current share typical4 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 typical30 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 value22 A
● at AC-1-
— up to 690 V at ambient temperature 40 °C rated value22 A
— up to 690 V at ambient temperature 60 °C rated value20 A
● at AC-4 at 400 V rated value11.5 A
● at AC-5a up to 690 V rated value19.4 A
● at AC-5b up to 400 V rated value13.2 A
— up to 230 V for current peak value n=20 rated value9.6 A
— up to 400 V for current peak value n=20 rated value9.6 A
— up to 500 V for current peak value n=20 rated value9.6 A
— up to 690 V for current peak value n=20 rated value8.9 A
● at AC-6a-
— up to 230 V for current peak value n=30 rated value6.6 A
— up to 400 V for current peak value n=30 rated value6.4 A
— up to 500 V for current peak value n=30 rated value6.4 A
— up to 690 V for current peak value n=30 rated value6.4 A
minimum cross-section in main circuit at maximum AC-1 rated value4 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 value20 A
— at 110 V rated value20 A
— at 220 V rated value1.5 A
— at 440 V rated value0.2 A
— at 600 V rated value0.2 A
operating power-
● at AC-3-
— at 400 V rated value7.5 kW
— at 500 V rated value7.5 kW
— at 690 V rated value7.5 kW
operating power for approx. 200000 operating cycles at AC-4-
● up to 230 V for current peak value n=20 rated value3.8 kV·A
● up to 400 V for current peak value n=20 rated value6.6 kV·A
● up to 500 V for current peak value n=20 rated value8.3 kV·A
● up to 690 V for current peak value n=20 rated value10.6 kV·A
operating apparent power at AC-6a-
● up to 230 V for current peak value n=30 rated value2.5 kV·A
● up to 400 V for current peak value n=30 rated value4.4 kV·A
● up to 500 V for current peak value n=30 rated value5.5 kV·A
● up to 690 V for current peak value n=30 rated value7.6 kV·A
short-time withstand current in cold operating state up to 40 °C-
● limited to 1 s switching at zero current maximum300 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 5 s switching at zero current maximum169 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 10 s switching at zero current maximum128 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 30 s switching at zero current maximum92 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 60 s switching at zero current maximum74 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 DC4 W
holding power of magnet coil at DC4 W
closing delay-
opening delay-
● at DC7 ... 13 ms
arcing time10 ... 15 ms
control version of the switch operating mechanismStandard A1 - A2
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 value11 A
yielded mechanical performance [hp]-
● for single-phase AC motor-
— at 110/120 V rated value1 hp
— at 230 V rated value2 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 value10 hp
contact rating of auxiliary contacts according to ULA600 / Q600
design of the fuse link-
● for short-circuit protection of the main circuit-
— with type of coordination 1 requiredgG: 50A (690V,100kA), aM: 25A (690V,100kA), BS88: 50A (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 (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²
● at AWG cables for main contacts2x (20 ... 16), 2x (18 ... 14), 2x 12
connectable conductor cross-section for main contacts-
● solid0.5 ... 4 mm²
● stranded0.5 ... 4 mm²
connectable conductor cross-section for auxiliary contacts-
● solid or stranded0.5 ... 4 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), 2x 4 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), 2x 12
AWG number as coded connectable conductor cross section-
● for main contacts20 ... 12
● for auxiliary contacts20 ... 12
B10 value with high demand rate acc. to SN 319201 000 000
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
Weight0.290 kg
Dimensions50.00 × 61.50 × 77.50 mm

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