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Siemens SIRIUS 3RT1045-1XB40-0LA2

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3RT1045-1XB40-0LA2

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The Siemens 3RT1045-1XB40-0LA2 is a reliable power contactor tailored for motor switching applications. With a robust rated current capacity of 80 A, this compact unit is integral to efficient electrical control systems.

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Technical specifications for 3RT1045-1XB40-0LA2

ManufacturerSiemens
Product TypePower Contactor, AC-3
Product LineSIRIUS
Part Number3RT1045-1XB40-0LA2
UPC804766051067
Weight2.94 lbs (1.33 kg)
Poles3
SuppressionIntegrated varistor
SizeS3
Rated Current80 A
MountingDIN rail
ConnectionScrew terminal
Control Voltage24 V DC
Power Rating37 kW @ 400 V AC
ApplicationMotor switching (IEC AC-3 category)
Control TypeSolid-state control block
Voltage Range0.7–1.25 × Us
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The 3RT1045-1XB40-0LA2 power contactor makes a significant contribution to motor control with its AC-3 rating, capable of handling currents up to 80 A. This apparatus operates effectively within a mounting configuration on DIN rails, making installation straightforward and secure. With its three-pole design, it seamlessly integrates into various electrical control circuits.

A noteworthy feature is its integrated varistor, which serves to mitigate voltage spikes and protect the circuit. The contactor is designed for continuous operation with a nominal power rating of 37 kW at an input voltage of 400 V AC. Additionally, it functions within a voltage range of 0.7 to 1.25 times the specified operating voltage.

Control is executed via a solid-state block, ensuring rapid response and durability. Furthermore, the standard control voltage set at 24 V DC simplifies connections and enhances operational efficiency. Connections are made using screw terminals, which provide secure and stable electrical interfaces for various applications.