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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT1026-3BB40 |
| Alternative Part Number | 3RT10263BB40 |
| Manufacturer | Siemens |
| Contact Configuration | 3NO (3 Normally Open contacts) |
| Rated Operational Current (AC-3) | 25 A at 400 V |
| Rated Operational Current (AC-1) | 40 A at 400 V |
| Control Voltage | 24 V dc |
| Contactor Size | S0 |
| Rated Operational Power (AC-3) | 11 kW at 400 V |
| Rated Operational Power (AC-1) | 23 kW at 400 V |
| Protection Class | IP20; IP00 |
| Mechanical Service Life | 10 million operating cycles |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
| Electrical Connection | Screw-type terminals for main circuit; spring-loaded terminals for auxiliary and control circuit |
| Operating Temperature Range | -25 to +60 °C |
| Short-Circuit Protection | Fuse gL/gG: 100 A for coordination 1, 35 A for coordination 2 |
| Dimensions (H x W x D) | 85 mm x 45 mm x 100 mm |
| Commodity Code | 853649 |
The Siemens 3RT1026-3BB40 is a robust power contactor designed to handle a variety of applications within industrial environments. This contactor is part of the SIRIUS product line, renowned for its reliability and efficiency. With a size S0 footprint, it is compact enough for space-saving installations yet powerful enough to manage AC-3 loads up to 11 kW at 400 V.
The unit features three poles and operates with a DC control supply voltage of 24 V, making it suitable for integration into a wide range of control circuits. The contactor is engineered for quick and secure connection, offering both screw-type terminals for the main current circuit and Cage Clamp terminals for auxiliary and control current circuits, which cater to the preferences of different installation practices.
Designed for straightforward mounting, the 3RT1026-3BB40 can be easily fixed onto a 35 mm standard mounting rail in accordance with DIN EN 50022 standards, and it supports side-by-side installation, allowing for efficient use of panel space. The contactor's mechanical service life is impressive, boasting up to 10 million operating cycles, which underscores its durability and long-term performance.
This power contactor is an excellent choice for those seeking a dependable solution for controlling motors and loads in industrial applications, offering both performance and resilience in a compact package.
Commonly Asked Questions
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Frequently Asked Questions
What type of contactor is the Siemens 3RT1026-3BB40?
The Siemens 3RT1026-3BB40 is a power contactor designed for switching motors and other loads. It is part of the SIRIUS product family and is suitable for use in AC-3 applications up to 11 kW/400 V.
Can the contactor be mounted on a DIN rail?
Yes, the contactor is designed for screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 50022, allowing for easy installation in control cabinets.
What is the control voltage for this contactor?
The control voltage for the Siemens 3RT1026-3BB40 contactor is 24 V DC, which is used to energise the contactor's coil.
What is the IP rating of the Siemens 3RT1026-3BB40?
The contactor has an IP20 protection rating on the front and IP00 for the terminal, providing a degree of protection against solid objects.
What is the mechanical service life of the contactor?
The mechanical service life of the contactor is typically 10 million operating cycles, ensuring long-term reliability in various applications.
What are the ambient operating temperature limits for this contactor?
The ambient operating temperature range for the contactor is from -25°C to +60°C, making it suitable for a wide range of environmental conditions.
What type of terminals does the contactor have for electrical connections?
The contactor features screw-type terminals for the main current circuit and spring-loaded terminals for the auxiliary and control current circuit.
How many NO and NC contacts does the contactor have?
The Siemens 3RT1026-3BB40 contactor has 3 normally open (NO) contacts for the main contacts and does not have normally closed (NC) contacts.
What is the maximum operating altitude for the contactor?
The contactor can be operated at a maximum altitude of 2,000 meters above sea level without derating.
Is the Siemens 3RT1026-3BB40 compliant with any specific standards?
The contactor complies with international standards, ensuring its suitability for global use in industrial control applications.
Part conditions explained
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