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Specification & Description
The Siemens 3RB3036-1UB0 is a state-of-the-art solid-state overload relay designed for motor protection. This component is part of the SIRIUS product family and is engineered to provide reliable protection for three-phase motors. With a size S2 footprint, it is compatible with similarly sized contactors, making it a versatile choice for various industrial applications.
The overload relay offers a trip class of 10E and an adjustable response value current range of 12.5 to 50 A, ensuring precise protection for motors against excessive current draw that could lead to damage. It is designed for direct mounting onto contactors, facilitating a streamlined installation process.
Featuring an insulation voltage rated at 690 V and a surge voltage resistance of 6 kV, the 3RB3036-1UB0 is built to withstand challenging electrical environments. The device is also equipped with an integrated auxiliary switch with one normally closed (NC) contact for contactor disconnection and one normally open (NO) contact for tripped condition signalling, enhancing its functionality.
The overload relay is designed with user safety in mind, boasting a protection class of IP20 on the front and finger-safe terminals to prevent accidental contact. Its robust construction ensures shock resistance in compliance with IEC 60068-2-27 standards and vibration resistance for a wide range of industrial settings.
For ease of maintenance, the 3RB3036-1UB0 features a manual-automatic-reset function and a clear slide switch display for switching status. Its electronic design of the overload release ensures a swift recovery time after an overload trip, minimising downtime and maintaining operational efficiency.
This overload relay is not only a reliable component for motor protection but also a testament to Siemens' commitment to quality and innovation in industrial control technology.
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Frequently Asked Questions
What is the function of this overload relay?
The overload relay is designed to protect motors from overcurrent by tripping the circuit when current exceeds a preset level, ensuring the motor operates within safe parameters.
Can this overload relay be mounted directly onto a contactor?
Yes, it is designed for mounting onto contactors, allowing for a compact and efficient setup within motor control systems.
What is the range of the adjustable pick-up value current for this relay?
The adjustable pick-up value current for the overload relay ranges from 12.5 to 50 A, providing flexibility to match the protection needs of various motor sizes.
What type of terminals does this overload relay have for connection?
This overload relay is equipped with screw-type terminals for both the main and auxiliary circuits, facilitating secure and reliable connections.
Is there a manual reset function available on this relay?
Yes, the relay includes a manual reset function, allowing operators to manually reset the device after a trip event.
What is the IP rating of the front face of this overload relay?
The front face of the overload relay has an IP20 protection rating, indicating that it is protected against solid objects larger than 12.5 mm but not against liquids.
What is the significance of the Class 10E trip class for this relay?
Class 10E refers to the tripping characteristics of the relay, meaning it will trip within 10 seconds at 600% of the rated current, providing enhanced protection for motors against electrical overload.
Can this relay be used in hazardous locations?
The relay has approvals for use in hazardous locations, making it suitable for a variety of industrial environments where safety is paramount.
What is the operating temperature range for this overload relay?
The operating temperature range for the relay is from -25 to +60°C, ensuring reliable performance in a wide range of environmental conditions.
Does this overload relay offer short-circuit protection?
While the primary function is overcurrent protection, it should be used in conjunction with appropriate short-circuit protective devices to ensure full protection of the circuit.
Part conditions explained
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Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.
