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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2038-3NB30 |
| Alternative Part Number | 3RT20383NB30 |
| Part Manufacturer | Siemens |
| Size of Contactor | S2 |
| Product Type | Power contactor |
| Number of Poles | 3-pole |
| Operating Voltage | AC-3 rated value maximum 690 V |
| Operating Current at AC-1 | 90 A at 400 V (40 °C), 80 A at 690 V (60 °C) |
| Operating Current at AC-3 | 80 A at 400 V, 80 A at 500 V, 58 A at 690 V |
| Auxiliary Contacts | 1 NO (Normally Open) + 1 NC (Normally Closed) |
| Control Voltage | 20-33 V AC/DC |
| Terminal Type | Spring-type terminals |
| Power Loss | 17.1 W at AC in hot operating state, 2 W typical without load current share |
| Surge Voltage Resistance | Rated value 6 kV for both main and auxiliary circuits |
| Shock Resistance | 7.7g / 5 ms, 4.5g / 10 ms at AC; 12g / 5 ms, 7g / 10 ms at DC |
| Mechanical Service Life | Typical 10,000,000 switching cycles |
| Ambient Operating Temperature | -25 ... +60 °C during operation |
| Storage Temperature | -55 ... +80 °C during storage |
| Installation Altitude | Maximum 2,000 m above sea level |
| Protection Class | IP20 on the front, IP00 of the terminal |
| Reference Code | According to IEC 81346-2: Q |
The Siemens 3RT2038-3NB30 is a robust power contactor designed to handle high switching capacities with ease. This component is part of the SIRIUS product family, renowned for its reliability and efficiency in industrial applications. With an AC-3 rating of 80 A and the capability to manage motors up to 37 kW at 400 V, it is an ideal solution for a wide range of power management tasks.
Crafted for durability, the 3RT2038-3NB30 features a three-pole design and includes both a normally open (NO) and a normally closed (NC) contact, offering flexibility in control circuit design. The contactor is equipped with spring-type terminals, ensuring a secure and maintenance-free electrical connection that is both time-saving and convenient for installation.
The unit operates with a control voltage range of 20-33 V AC/DC and includes a built-in varistor for surge protection, safeguarding the contactor against voltage spikes. Its compact size, S2, allows for efficient use of space within control cabinets, while still delivering the high performance expected from Siemens components.
The 3RT2038-3NB30 is designed to withstand challenging industrial environments, with an operational temperature range of -25 to +60 °C and an installation altitude capability of up to 2000 metres above sea level. Its mechanical service life is rated at an impressive 10 million switching cycles, highlighting the contactor's longevity and reliability.
This power contactor is a testament to Siemens' commitment to quality and performance, making it a suitable choice for those seeking a dependable solution for controlling motors and loads in a variety of industrial settings.
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Frequently Asked Questions
What type of connections does this contactor support?
The contactor supports screw-type terminals for the main current circuit and spring-loaded terminals for the auxiliary and control current circuit.
Can this contactor be mounted on a DIN rail?
Yes, it can be mounted on a 35 mm standard mounting rail according to DIN EN 60715 with both screw and snap-on mounting options.
What is the rated operating voltage for this contactor?
The rated operating voltage for the contactor at AC-3 is a maximum of 690 V.
What are the dimensions of this contactor?
The contactor has a height of 114 mm, a width of 55 mm, and a depth of 130 mm.
What is the ambient temperature range for operating this contactor?
The contactor can operate within an ambient temperature range of -25°C to +60°C.
Is side-by-side mounting possible with this contactor?
Yes, side-by-side mounting is possible with this contactor.
What is the mechanical service life of this contactor?
The typical mechanical service life of the contactor is 10 million switching cycles.
What type of protection does the front of this contactor offer?
The front of the contactor offers IP20 protection class.
What is the installation altitude limit for this contactor?
The contactor can be installed at altitudes up to 2000 metres above sea level.
What are the conductor cross-sections that can be connected to the main contacts?
For the main contacts, solid or stranded conductors of 2x (1 ... 35 mm²) or 1x (1 ... 50 mm²) can be connected.
