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Specification & Description
The Siemens 3RU1136 Series Overload Relay is a robust and reliable component designed for motor protection. This particular model, the 3RU1136-4EB0, is engineered to safeguard motors by monitoring and reacting to overcurrent situations, thus preventing potential damage due to overload conditions. With a current adjustment range of 22 to 32 amperes, it is suitable for a variety of industrial applications.
Crafted for direct mounting, this overload relay is compatible with size S2 contactors and can be seamlessly integrated into existing setups. The unit features screw-type terminals for both the main and auxiliary circuits, ensuring secure and stable connections. The thermal overload relay is designed to operate within a voltage rating of up to 690 V AC, making it versatile for use in numerous electrical environments.
The compact dimensions of 55 x 127 x 171 mm allow for efficient use of space within control cabinets, while the device's construction ensures it remains finger-safe, enhancing safety during installation and maintenance. The relay is also equipped with a manual and automatic reset function, providing flexibility in how the relay can be reset after a trip event.
This overload relay is built to withstand challenging conditions, with an operational temperature range of -20 to +70 degrees Celsius and an installation altitude of up to 2000 meters above sea level. Its robust design includes a shock resistance of 8g / 10 ms and an impulse voltage resistance rated at 6 kV, ensuring durability and a long service life in demanding industrial settings.
The Siemens 3RU1136-4EB0 is a Class 10 overload relay, which means it trips within a time frame that is optimal for protecting motors in most industrial applications. It is a preferred choice for those seeking a reliable solution for motor protection that combines functionality with straightforward installation and operation.
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Frequently Asked Questions
What is the voltage rating for this overload relay?
The overload relay is rated for an insulation voltage of up to 690 V, making it suitable for a wide range of industrial applications.
Can this overload relay be mounted directly to a contactor?
Yes, the design of the Siemens 3RU1136-4EB0 allows for direct mounting to a contactor, facilitating easy integration into motor control systems.
What are the dimensions of this overload relay?
The dimensions of the overload relay are 55 mm in width, 127 mm in height, and 171 mm in depth, which should be considered when planning for installation space.
What is the operating temperature range for this relay?
The operating temperature range for this relay is between -20°C and +70°C, ensuring reliable performance in various environmental conditions.
What is the trip class of this overload relay?
This overload relay has a trip class of 10, which means it will trip within 10 seconds at 600% of its rated current, providing quick protection for motors.
What type of terminals does this overload relay have?
The relay is equipped with screw-type terminals for both the main current circuit and the auxiliary and control current circuit, ensuring secure and reliable connections.
What is the protection class of the front face of this relay?
The front face of the relay has a protection class of IP20, offering protection against solid objects larger than 12.5 mm but not against water.
What is the significance of the overload relay being a Class 10 device?
Being a Class 10 device means that the overload relay is designed to trip within 10 seconds under conditions of overcurrent that are 600% of its rated current, providing optimal protection for motors against overheating due to overload or phase failure.
Can this overload relay be used in hazardous locations?
The relay has general product approvals for use in hazardous locations, but specific conditions and certifications should be checked to ensure compliance with regional safety standards.
What is the adjustable current range for this overload relay?
The adjustable current range for the Siemens 3RU1136-4EB0 is from 22 A to 32 A, allowing for precise protection settings based on the motor's requirements.
