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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2023-1DB44-3MA0 |
| Alternative Part Number | 3RT20231DB443MA0 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Contactor Size | S0 |
| Number of Poles | 3 |
| Contact Configuration | 2 Normally Open (NO) + 2 Normally Closed (NC) |
| Control Voltage | DC 24V with plugged-in varistor |
| Terminal Type | Screw terminal |
| Rated Operational Current (AC-3) | 9 A |
| Rated Operational Current (AC-1) | 40 A at 40 °C ambient temperature |
| Rated Operational Power (AC-3) | 4 kW / 400 V |
| Rated Insulation Voltage | 690 V |
| Rated Impulse Withstand Voltage | 6 kV |
| Mechanical Service Life | 10,000,000 cycles typical |
| Protection Class | IP20 |
| Ambient Operating Temperature Range | -25 ... +60 °C |
| Mounting Position | +/-180° rotation possible on vertical mounting surface; can be tilted +/- 22.5° |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715 |
| Dimensions (H x W x D) | 85 mm x 45 mm x 151 mm |
| Shock Resistance | 10g / 5 ms, 7.5g / 10 ms (rectangular impulse), 15g / 5 ms, 10g / 10 ms (sine pulse) at DC |
| Installation Altitude | Up to 2,000 m above sea level |
| Storage Temperature Range | -55 ... +80 °C |
| Auxiliary Switch | No |
| Communication Module | No |
| Product Brand Name | SIRIUS |
The Siemens 3RT2023-1DB44-3MA0 is a high-quality power contactor designed to manage the switching of motor loads in industrial applications. This component is part of the SIRIUS product family, renowned for its reliability and efficiency in controlling power circuits. With a compact size S0 footprint, it is engineered to facilitate easy installation and maintenance.
This contactor is capable of handling AC-3 loads up to 9 A and motor control tasks for motors with a power rating of 4 kW at 400 V. It features a 24 V DC control voltage with an integrated varistor, ensuring protection against voltage spikes and enhancing the longevity of the device. The unit is equipped with 2 normally open (NO) and 2 normally closed (NC) contacts, providing flexibility for various control circuit configurations.
The robust design of the 3RT2023-1DB44-3MA0 ensures a mechanical service life of up to 10 million switching cycles, making it a durable choice for demanding industrial environments. It also boasts a finger-safe protection class of IP20, ensuring additional safety during operation and handling.
With screw-type terminals, the contactor allows for secure and reliable connections, accommodating a range of conductor cross-sections for both main and auxiliary contacts. The device can be mounted easily onto a 35 mm standard mounting rail, and its design permits side-by-side mounting without the need for additional spacing, optimising panel space.
The Siemens 3RT2023-1DB44-3MA0 is a testament to Siemens' commitment to quality and performance, offering a dependable solution for controlling electric motors and other loads in a variety of industrial applications.
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Frequently Asked Questions
What type of contactor is this Siemens product?
This Siemens product is a power contactor designed for switching an electrical power circuit, similar to a relay but with higher current ratings. It is suitable for AC-3 applications and can handle 9 A and 4 kW at 400 V.
Can this contactor be used for communication functions?
No, this contactor does not have a function module for communication. It is intended for basic switching operations within an electrical circuit.
What is the size of this contactor and how does it mount?
The contactor is of size S0 and can be mounted by screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 60715. It allows for +/-180° rotation on a vertical mounting surface and can be tilted forward and backward by +/- 22.5°.
What is the IP protection class of this contactor?
The contactor has an IP20 protection class on the front, ensuring protection against solid objects larger than 12mm but not against water.
What are the dimensions of this contactor?
The dimensions of the contactor are 45 mm in width, 85 mm in height, and 151 mm in depth.
What type of terminals does this contactor have?
This contactor is equipped with screw-type terminals for both the main current circuit and the auxiliary and control current circuit.
What is the rated operational voltage for this contactor?
The rated operational voltage for this contactor in an AC-3 application is up to a maximum of 690 V.
What is the mechanical service life of this contactor?
The mechanical service life of the contactor is typically 10 million switching cycles, ensuring long-term reliability in your applications.
Does this contactor have mirror contacts according to IEC standards?
Yes, this contactor includes mirror contacts according to IEC 60947-4-1, which are used for safety functions in control circuits.
What is the B10 value for this contactor?
The B10 value for this contactor, with a high demand rate according to SN 31920, is 1,000,000.
