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Specification & Description
The Siemens 3RU1116-0FB0 is a thermal overload relay designed to provide efficient protection for motors in the event of an overload. This compact and robust component is part of the SIRIUS product family and is engineered to seamlessly integrate with size S00 contactors. With an adjustable response current range of 0.35 to 0.5 A, it ensures precise protection tailored to specific motor requirements.
Constructed to withstand challenging industrial environments, the 3RU1116-0FB0 operates reliably within an ambient temperature range of -20 to +70°C and can be installed at altitudes up to 2000 metres above sea level without derating. It boasts a finger-safe design, offering enhanced protection against electrical shock, and is rated with an insulation voltage of 690V, with a pollution degree of 3.
The overload relay is equipped with three poles for the main current circuit and features both normally closed (NC) and normally open (NO) contacts for auxiliary circuit control, enhancing its versatility in various control applications. The auxiliary contacts are rated for use with programmable logic controllers (PLCs), ensuring compatibility with modern control systems.
With a trip class of 10, the 3RU1116-0FB0 is designed to provide rapid response to prevent motor damage, and its robust construction includes shock resistance of 8g / 10 ms. The device's direct mounting capability allows for straightforward installation, and its dimensions are optimised for space-saving within control cabinets.
The Siemens 3RU1116-0FB0 thermal overload relay is a reliable and essential component for motor protection in a wide range of industrial applications, offering both performance and durability.
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Frequently Asked Questions
What is the function of this thermal overload relay?
The thermal overload relay is designed to protect motors from overheating, ensuring that the current flowing to the motor does not exceed safe levels. It provides reliable protection for motors in the event of overload or phase failure.
Can this overload relay be directly mounted to a contactor?
Yes, this overload relay is designed for direct mounting to a contactor, allowing for a compact and efficient setup.
What is the trip class of this overload relay?
This overload relay has a trip class of 10, which means it will trip or activate within 10 seconds at 600% of its rated current, providing timely protection against electrical overload.
What are the ambient temperature limits for operating this overload relay?
The overload relay can operate within an ambient temperature range of -20°C to +70°C, ensuring it functions correctly in a variety of environmental conditions.
What type of terminals does this overload relay have for electrical connections?
This overload relay is equipped with screw-type terminals for both the main current circuit and the auxiliary and control current circuit, facilitating secure and reliable connections.
Is the overload relay finger-safe?
Yes, the overload relay is designed to be finger-safe, providing protection against electrical shock during installation and maintenance.
What is the maximum operating voltage for this overload relay?
The maximum operating voltage for the main circuit of this overload relay is 690V at AC-3, which is suitable for a wide range of industrial applications.
What is the adjustable response current range for this overload relay?
The adjustable response current range for the current-dependent overload release is from 0.35 A to 0.5 A, allowing for precise protection settings based on the motor's requirements.
What is the insulation voltage rating for this overload relay?
The insulation voltage rating for this overload relay, with a degree of pollution 3, is rated at 690V, ensuring it can withstand the electrical stresses encountered in industrial environments.
What is the required spacing for side-by-side mounting of this overload relay?
When mounting this overload relay side-by-side, a spacing of 0 mm is required for most directions, but a 6 mm clearance is needed at the side for live parts or grounded parts.
