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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RU1116-1BB0 |
| Alternative Part Number | 3RU11161BB0 |
| Manufacturer | Siemens |
| Product Type | Overload Relay |
| Contact Configuration | 1 Normally Open (NO); 1 Normally Closed (NC) |
| Rated Operational Voltage | 690 V ac |
| Current Range | 1.4 to 2 A |
| Mounting Style | Vertical |
| Connection Type | Screw |
| Dimensions | 45 x 73 x 117 mm |
| Size | S00 |
| Trip Class | CLASS 10 |
| Number of Poles | 3 (for main current circuit) |
| Protection Class | IP20 (on the front) |
| Ambient Temperature Range | -20 to +70 °C (during operation) |
| Insulation Voltage | Rated value 690 V with degree of pollution 3 |
| Surge Voltage Resistance | Rated value 6 kV |
| Shock Resistance | 8g / 10 ms |
| Type of Protection | DMT 98 ATEX G 001 |
| Power Loss | Total typical 6.6 W |
| Installation Altitude | Up to 2000 m above sea level |
| Relative Humidity | Up to 100% during operation |
| Conductor Cross-Section | For main contacts: solid (up to 2x 4 mm² max.), finely stranded (up to 2x (0.75 ... 2.5 mm²)) |
| Auxiliary Circuit Contacts | 1 NC, 1 NO |
| Compliance | General Product Approval for use in hazardous locations |
The Siemens 3RU1116-1BB0 is a meticulously engineered overload relay designed to offer reliable motor protection. This component is essential for safeguarding motors from potential damage due to excessive current or overload conditions. With a current adjustment range of 1.4 to 2 A, it provides precise protection tailored to your motor's requirements.
Crafted for vertical mounting, this overload relay boasts a compact size of S00, making it suitable for integration into space-constrained environments. The dimensions of 45 x 73 x 117 mm ensure it can be accommodated within various setups without compromising on functionality.
The relay features a robust design with a screw connection type, facilitating secure and straightforward installation. It operates efficiently within a voltage rating of up to 690 V ac, making it versatile for a wide range of industrial applications.
Equipped with both 1NO and 1NC contacts, the Siemens 3RU1116-1BB0 provides the flexibility needed for various control circuit configurations. Its Class 10 tripping characteristic ensures rapid response to overloads, minimising the risk of motor damage and downtime.
This overload relay is a testament to Siemens' commitment to quality and reliability, offering a dependable solution for motor protection in industrial settings across the United Kingdom and beyond.
Commonly Asked Questions
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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 breaking the circuit in the event of an overload or phase failure. It provides reliable protection for motors during start-up and running operations.
Can this overload relay be directly mounted onto a contactor?
Yes, the 3RU1116-1BB0 is intended for direct mounting onto a contactor, which allows for a compact and efficient setup within motor control systems.
What are the dimensions of this overload relay?
The dimensions of the overload relay are 45 mm in width, 73 mm in depth, and 117 mm in height, making it suitable for integration into various control panel layouts.
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 timely protection against overloads.
What is the operating voltage range for this overload relay?
The operating voltage range for this overload relay is up to 690 V AC, which covers a wide range of industrial applications.
What type of terminals does this overload relay have?
The 3RU1116-1BB0 features screw-type terminals for both the main current circuit and the auxiliary and control current circuit, ensuring secure and reliable connections.
What is the ambient temperature range in which this overload relay can operate?
The overload relay can operate within an ambient temperature range of -20°C to +70°C, ensuring performance in a variety of environmental conditions.
Does this overload relay have a manual or automatic reset function?
This particular model comes with both manual and automatic reset functions, providing flexibility in how the relay can be reset after a trip event.
What is the IP rating of this overload relay?
The front of the overload relay has an IP20 rating, indicating protection against solid objects larger than 12.5 mm but not against liquids.
What is the significance of the adjustable pick-up value current?
The adjustable pick-up value current, ranging from 1.4 to 2 A, allows for precise setting of the overload protection level to match the requirements of the specific motor being protected.
Part conditions explained
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