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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2026-2AL20 |
| Alternative Part Number | 3RT20262AL20 |
| Manufacturer | Siemens |
| Product Type | Power Contactor |
| Size of Contactor | S0 |
| Auxiliary Switch | Yes |
| Protection Class IP | IP20 |
| Degree of Pollution | 3 |
| Installation Altitude | Up to 2,000 metres above sea level |
| Ambient Temperature (Operating) | -25°C to +60°C |
| Ambient Temperature (Storage) | -55°C to +80°C |
| Shock Resistance | AC: 8.3g / 5 ms, 5.3g / 10 ms (rectangular impulse); 13.5g / 5 ms, 8.3g / 10 ms (sine pulse) |
| Impulse Voltage Resistance | Rated value 6 kV |
| Insulation Voltage | Rated value 690 V |
| Electrical Connection | Spring-loaded terminals for main current circuit and auxiliary/control current circuit |
| Conductor Cross-sections | Main contacts: 1...10 mm² (solid/stranded), 1...6 mm² (finely stranded with/without end processing) |
| Auxiliary Contacts | 0.5...2.5 mm² (single/multi-stranded), 0.5...1.5 mm² (finely stranded with end processing) |
| Mirror Contact | According to IEC 60947-4-1 |
| Safety | Finger-safe design |
| Approvals | General Product Approval, EMC |
The Siemens 3RT2026-2AL20 is a robust power contactor designed to handle a variety of applications within industrial environments. This contactor is part of the SIRIUS product family, renowned for its reliability and efficiency in controlling motors and loads. With a size S0 footprint, it is compact yet powerful, capable of switching motors up to 11 kW at 400 V in AC-3 usage categories.
This model features a 3-pole design and includes an integrated auxiliary contact with a configuration of 1NO+1NC, providing additional flexibility for control circuitry. The contactor operates with an AC control supply voltage of 230V at 50/60Hz, making it suitable for a wide range of power networks.
The spring-loaded terminal connections ensure a secure and maintenance-free electrical connection, which is crucial for consistent performance and longevity. The device is rated for up to 10 million mechanical operating cycles, highlighting its durability and suitability for frequent switching tasks.
Designed with user safety in mind, the 3RT2026-2AL20 has a finger-safe protection class of IP20, ensuring protection against direct contact with live parts. It also boasts an insulation voltage rating of 690V and an impulse voltage resistance of 6kV, providing a high level of protection against electrical disturbances.
The contactor's compact dimensions allow for efficient use of space inside control cabinets, and it can be mounted easily onto a 35 mm standard mounting rail according to DIN EN 60715. It is also designed for side-by-side mounting, which is beneficial when space is at a premium.
Overall, the Siemens 3RT2026-2AL20 power contactor is a reliable and efficient solution for industrial switching applications, offering both performance and safety features to meet the demands of modern industrial environments.
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Frequently Asked Questions
What type of product is this?
This is a power contactor designed for switching an electrical power circuit, typically used in applications involving motors.
Can this contactor be used for safety-related switching off?
Yes, the contactor is suitable for safety-related switching off, making it a reliable choice for applications where safety is a concern.
What is the size of the contactor?
The contactor is of size S0, which is a standard size for this type of electrical component.
What is the rated operational current for this contactor?
The rated operational current at AC-3 400 V is 25 A, and at AC-1 690 V, it is 40 A at 40°C ambient temperature.
What type of terminals does the contactor have?
The contactor is equipped with spring-loaded terminals for both the main current circuit and the auxiliary and control current circuit.
What is the insulation voltage rating of the contactor?
The insulation voltage rating of the contactor is 690 V.
What are the dimensions of the contactor?
The contactor has a height of 102 mm, a width of 45 mm, and a depth of 97 mm.
Is the contactor equipped with auxiliary switches?
Yes, the contactor comes with an auxiliary switch, which can be used for various control and signalling functions.
What is the shock resistance of the contactor?
The contactor has a shock resistance of 8.3g / 5 ms for a rectangular impulse and 13.5g / 5 ms for a sine pulse at AC.
What is the maximum permissible voltage for protective separation?
The maximum permissible voltage for protective separation between the coil and main contacts is 400 V, in accordance with EN 60947-1.
Can this contactor be mounted on a DIN rail?
Yes, the contactor can be mounted on a 35 mm standard mounting rail according to DIN EN 60715.
