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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2025-2BB40 |
| Alternative Part Number | 3RT20252BB40 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Contactor Size | S0 |
| Number of Poles | 3 Pole |
| Rated Operational Current (AC-3) | 17 A |
| Rated Operational Voltage (AC-3) | 400 V ac |
| Auxiliary Contacts | 1 Normally Open (NO) + 1 Normally Closed (NC) |
| Coil Voltage | DC 24V |
| Terminal Type | Spring-loaded terminal |
| Insulation Voltage | Rated at 690 V |
| Surge Voltage Resistance | Rated value 6 kV |
| Degree of Pollution | 3 |
| Protection Class IP | IP20 for front and terminals |
| Ambient Operating Temperature | -25 … +60 °C |
| Installation Altitude | Up to 2,000 meters above sea level |
| Shock Resistance | At DC 10g / 5 ms, 7.5g / 10 ms for rectangular impulse; 15g / 5 ms, 10g / 10 ms for sine pulse |
| Compliance | EMC, KC, Functional Safety/Safety of Machinery, Declaration of Conformity |
The Siemens 3RT2025-2BB40 is a robust power contactor designed to handle a variety of applications within industrial environments. This three-pole contactor is engineered to control motors and is capable of switching power circuits up to AC-3, 17 A, and 7.5 kW at 400 V ac. It features a 24 V dc coil and includes both one normally open (NO) and one normally closed (NC) auxiliary contact for added flexibility in circuit design.
Constructed with a size S0 frame, the 3RT2025-2BB40 is compact and suitable for space-saving installations. It utilises spring-loaded terminals, ensuring a secure and maintenance-free electrical connection that is both time-efficient and reliable for system integrators and electricians.
The contactor is designed with safety in mind, boasting a finger-safe protection class of IP20, which helps to prevent accidental contact with live components. It also has a high degree of pollution resistance, rated at level 3, and can withstand impulse voltages up to 6 kV, ensuring durability and reliability in harsh industrial settings.
With an insulation voltage rated at 690 V, the 3RT2025-2BB40 is suitable for a wide range of applications, including but not limited to motor control centres, conveyor systems, and HVAC installations. Its mechanical service life is impressive, offering a typical expectancy of 10 million switching cycles, which speaks to the longevity and quality of Siemens engineering.
The contactor's ambient operating temperature range of -25 to +60 °C and storage temperature range of -55 to +80 °C make it versatile for use in various environmental conditions, and it can be installed at altitudes up to 2,000 metres above sea level without derating.
Overall, the Siemens 3RT2025-2BB40 power contactor is a reliable and efficient solution for controlling motors and power circuits in industrial applications, providing both performance and safety in a compact design.
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Frequently Asked Questions
What type of contactor is this?
This is a power contactor designed for switching an electrical power circuit, similar to a relay except with higher current ratings. It's suitable for controlling electric motors and other high power loads in industrial applications.
Can this contactor be used for three-phase applications?
Yes, it is a 3-pole contactor, making it suitable for three-phase applications. It's commonly used to control three-phase motors and other similar loads.
What is the rated operational voltage for this contactor?
The rated operational voltage for this contactor in AC-3 usage is 400 V ac.
What is the control supply voltage of this contactor?
The control supply voltage for this contactor is 24 V DC.
What are the dimensions of this contactor?
The exact dimensions can be found in the datasheet, but it is designed to fit within the standardised dimensions for a Size S0 contactor.
What is the insulation voltage rating of this contactor?
The insulation voltage rating of this contactor is 690 V.
Does this contactor come with auxiliary contacts?
Yes, it comes with 1 normally open (NO) and 1 normally closed (NC) auxiliary contact.
What is the IP protection class of this contactor?
The protection class for the front of this contactor is IP20, indicating a basic level of protection against solid objects.
What is the rated operational current of this contactor in AC-3?
The rated operational current for this contactor in AC-3 is 17 A.
What type of terminal does this contactor have?
This contactor is equipped with spring-type terminals for easy and secure connections.
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