3RT20451KB401AA0

Siemens 3RT2045-1KB40-1AA0 SIRIUS power contactor, Size S3, 24VDC
Siemens 3RT2045-1KB40-1AA0 SIRIUS power contactor, Size S3, 24VDC

The Siemens 3RT2045-1KB40-1AA0 is a Size S3, 3-pole contactor from the SIRIUS 3RT2 series. It has an AC-3 rated current of 80A and a power of 37kW (400V), a control voltage of 24VDC, and is equipped with 1NO+1NC auxiliary contacts and screw terminals.

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Siemens 3RT2045-1KB40-1AA0 SIRIUS power contactor, Size S3, 24VDC
Product Positioning

The Siemens 3RT2045-1KB40-1AA0 power contactor is a Size S3, 3-pole design from the SIRIUS 3RT2 series. It has an AC-3 rated current of 80A and a rated current of 37kW (400V), suitable for general motor starting and switching control. The Siemens 3RT2045-1KB40-1AA0 has a control voltage of 24VDC, is equipped with 1NO+1NC auxiliary contacts and a built-in surge suppressor, uses screw terminal connections, and has a main circuit insulation voltage of up to 1000V.

Core Product Advantages and Features
Size S3 standard contactor
AC-3 rated current 80A, 37kW (400V), suitable for general motor starting and switching.
24VDC control voltage
Equipped with 1NO+1NC auxiliary contacts, built-in surge suppressor, suitable for PLC output control.
Screw terminal design
The main circuit has an insulation voltage of 1000V, and the auxiliary circuit has an insulation voltage of 690V, making installation and maintenance convenient.
Excellent mechanical life
Typical mechanical life reaches 10 million operating cycles, stable and reliable.
project Specification
Rated current (AC-3) 80 A
Rated power 37 kW / 400V
Extreme number 3-pole (3NO main contact)
Control/coil voltage 24 VDC
Auxiliary contact configuration 1NO+1NC
Applicable series/Size SIRIUS 3RT2 / Size S3
Terminal type Screw terminals
Main circuit insulation voltage 1000V (Pollution Level 3)
Auxiliary circuit insulation voltage 690V (Pollution Level 3)
Mechanical life Typical 10 million operation cycles
Protection level IP20 (Front-facing fingertip security)
feature Built-in surge suppressor (Varistor), suitable for 2A PLC output

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