3RT2037-1KB40

Siemens 3RT2037-1KB40 contactor, Size S2, 24VDC, 65A
Siemens 3RT2037-1KB40 contactor, Size S2, 24VDC, 65A

The Siemens 3RT2037-1KB40 contactor is a SIRIUS 3RT2 series size S2, 3-pole, AC-3 rated current 65A, power 30kW (400V), control voltage 24VDC, equipped with 1NO+1NC auxiliary contacts, suitable for DC control power supply applications.

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Siemens 3RT2037-1KB40 contactor, Size S2, 24VDC, 65A
Product Positioning

The Siemens 3RT2037-1KB40 contactor belongs to the SIRIUS 3RT2 series, Size S2, 3-pole standard model, with an AC-3 rated current of 65A and a power of 30kW (400V). It is suitable for medium to large motor circuits driven by a 24VDC control power supply. The Siemens 3RT2037-1KB40 coil withstands a surge voltage of up to 6kV, is equipped with 1NO+1NC auxiliary contacts, and can withstand direct drive from a 2A PLC output signal.

Core Product Advantages and Features
Size S2 standard 3-pole contactor
The AC-3 has a rated current of 65A and a power of 30kW (400V), and is suitable for switching medium and large motors.
Control voltage 24VDC
A pure DC coil that can be directly driven by a PLC output signal (2A).
1NO+1NC auxiliary contact
Provides feedback on the action status of the main contact, facilitating interlocking control.
Screw terminals, 35mm guide rail
Mechanical life of 10 million cycles, impact withstand voltage of 6kV.
project Specification
Rated current AC-3 65A (400V)
Rated power AC-3 30kW (400V)
Extreme number 3 poles
Control voltage 24VDC
Auxiliary contact configuration 1NO+1NC
Terminal type Screw terminals (capable of handling 2A PLC output)
Rated insulation voltage Ui 690V
Rated impulse withstand voltage Uimp 6kV
Protection level IP20 (front) / IP00 (terminal)
Mechanical life 10 million times
External dimensions 55 (width) × 114 (height) × 130 (depth) mm
Installation method 35mm standard guide rail clamping/screw fixing
Applicable series/sizes SIRIUS 3RT2, Size S2
Certification CE, UL, CSA, CCC

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