3RT2037-1KB44

Siemens 3RT2037-1KB44 Contactor Size S2 24VDC 2NO+2NC
Siemens 3RT2037-1KB44 Contactor Size S2 24VDC 2NO+2NC

The Siemens 3RT2037-1KB44 contactor is a SIRIUS 3RT2 series size S2, 3-pole, AC-3 rated current 65A, power 30kW (400V), control voltage 24VDC, equipped with 2NO+2NC auxiliary contacts, and is suitable for DC control systems.

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Siemens 3RT2037-1KB44 Contactor Size S2 24VDC 2NO+2NC
Product Positioning

The Siemens 3RT2037-1KB44 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 automated production lines driven by 24VDC control power. The Siemens 3RT2037-1KB44 features a pure DC coil design and built-in rheostat protection. It is equipped with 4 sets of auxiliary contacts (2NO + 2NC) for easy motor interlocking and status monitoring.

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
Pure DC coil design with built-in rheostat to suppress switching surges.
2NO+2NC auxiliary contacts
Four sets of auxiliary contacts provide relatively complete feedback and interlocking functions.
Screw terminals, 35mm guide rail
Mechanical life of 10 million cycles, insulation voltage of 690V.
project Specification
Rated current AC-3 65A (400V)
Rated power AC-3 30kW (400V)
Extreme number 3 poles
Control voltage 24VDC
Auxiliary contact configuration 2NO+2NC
Terminal type Screw terminals
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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