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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RB3026-1VB0 |
| Alternative Part Number | 3RB30261VB0 |
| Manufacturer | Siemens |
| Product Type | Overload Relay |
| Contact Configuration | 1NO/1NC (1 Normally Open, 1 Normally Closed) |
| Voltage Rating | 690 V ac |
| Number of Poles | 3 Poles |
| Terminal Type | Screw Terminal |
| Dimensions | 84 x 45 x 87 mm |
| Mounting | Contactor Mounting |
| Reset Method | Manual-Automatic-Reset |
| Insulation Voltage | Rated at 690 V with degree of pollution 3 |
| Impulse Voltage Resistance | Rated value 6 kV |
| Protection Class | IP20 for terminals and front |
| Electrical Connection | Screw-type terminals for main current circuit and auxiliary/control current circuit |
| Conductor Cross-Section | Main contacts: 1x (1 ... 10 mm²), 2x (1 ... 10 mm²); Auxiliary contacts: 1x (0.5 ... 4 mm²) |
| Tightening Torque | Main contacts: 2 ... 2.5 N·m; Auxiliary contacts: 0.8 ... 1.2 N·m |
| Operating Temperature Range | -25 ... +60 °C during operation |
| Storage Temperature Range | -40 ... +80 °C during storage |
| Relative Humidity | Up to 95% during operation |
| Installation Altitude | Up to 2,000 m above sea level |
| Resistance to Vibration | 1-6 Hz, 15 mm; 6-500 Hz, 20 m/s²; 10 cycles |
| Electromagnetic Compatibility | Conforms to degree of severity 3 according to IEC 60947-1 |
| Product Approvals | EMC, For use in hazardous locations |
The Siemens 3RB3026-1VB0 is a state-of-the-art overload relay designed to provide efficient motor protection. This solid-state device is engineered for use with size S0 contactors and is suitable for a wide range of industrial applications. The relay offers a trip class of 10E and is capable of handling currents from 10 to 40 A, ensuring reliable protection for motors against excessive load conditions.
Crafted with precision, the 3RB3026-1VB0 features a manual-automatic-reset function, allowing for quick restoration of operations following a trip event. The main and auxiliary circuits are connected via screw terminals, which facilitate a secure and stable electrical connection. The overload relay is also equipped with an integrated auxiliary switch and a trip indicator, providing clear and immediate status updates.
With an insulation voltage rated at 690 V and an impulse voltage resistance of 6 kV, the device is robust and capable of withstanding challenging electrical environments. Its compact dimensions of 84 x 45 x 87 mm make it suitable for installations where space is at a premium, without compromising on performance.
The 3RB3026-1VB0 is designed to be finger-safe, offering protection against electrical shock and enhancing safety during installation and maintenance. It is also compliant with EMC standards, ensuring minimal electromagnetic interference in sensitive environments.
This overload relay is a versatile and reliable component for motor control systems, providing both protection and peace of mind in a wide array of industrial settings.
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Frequently Asked Questions
What is the voltage rating for this overload relay?
The overload relay is rated for a voltage of up to 690 V ac.
Can this overload relay be mounted directly to a contactor?
Yes, this overload relay is designed for contactor mounting, allowing for a compact and efficient setup.
What are the dimensions of this overload relay?
The dimensions of the overload relay are 84 x 45 x 87 mm.
What type of terminals does this overload relay have?
The overload relay is equipped with screw terminals for secure and reliable connections.
How many poles does this overload relay have?
This overload relay has 3 poles.
What is the trip class of this overload relay?
The trip class for this overload relay is CLASS 10E.
What is the range of the adjustable current response value for this relay?
The adjustable current response value for the current-dependent overload release ranges from 10 to 40 A.
Does this overload relay have a manual reset function?
Yes, the overload relay features a manual reset function, as well as an automatic reset option.
What is the insulation voltage of this overload relay?
The insulation voltage, with a degree of pollution 3, is rated at 690 V.
Is there a specific ambient temperature range for operating this overload relay?
The overload relay is designed to operate within an ambient temperature range of -25 to +60 °C.
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