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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RU1136-1JB0 |
| Manufacturer | Siemens |
| Product Brand Name | SIRIUS |
| Product Designation | Thermal Overload Relay |
| Size of Overload Relay | S2 |
| Number of Poles for Main Current Circuit | 3 |
| Adjustable Response Current | 7 ... 10 A |
| Operating Voltage (Max) | 690 V |
| Service Power at AC-3 (400 V) | 4 kW |
| Impulse Voltage Resistance | 6 kV |
| Protection Class (Front) | IP20 |
| Shock Resistance | 8g / 10 ms |
| Ambient Temperature (Operating) | -20 ... +70 °C |
| Ambient Temperature (Storage) | -55 ... +80 °C |
| Relative Humidity (Max) | 100% |
| Installation Altitude (Max) | 2,000 m |
| Type of Protection | DMT 98 ATEX G 001 |
| Active Power Loss (Typical) | 9 W |
| Contact Configuration | 1 NO + 1 NC |
| Auxiliary Contacts Operating Current (AC-15) | 24 V: 3 A, 110 V: 3 A, 120 V: 3 A, 125 V: 3 A, 230 V: 2 A, 400 V: 1 A |
| Auxiliary Contacts Operating Current (DC-13) | 24 V: 1 A, 110 V: 0.22 A, 125 V: 0.22 A, 220 V: 0.11 A |
| Fuse Link for Short-Circuit Protection | gL/gG: 6 A, quick: 10 A |
| Mounting Type | Direct mounting |
| Mounting Position | Vertical mounting surface +/-135° rotatable, +/- 45° tiltable to the front and back |
| Dimensions (H x W x D) | 105 mm x 55 mm x 118 mm |
| Electrical Connection Type | Screw-type terminals |
| Connectable Conductor Cross-Section (Main Contacts) | Solid: 2x (0.75 ... 16 mm²), Stranded: 2x (0.75 ... 25 mm²), 0.75 ... 35 mm², Finely stranded with core end processing: 2x (0.75 ... 16 mm²), 0.75 ... 25 mm² |
| Connectable Conductor Cross-Section (Auxiliary Contacts) | Solid: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), Finely stranded with core end processing: 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| AWG Conductors (Main Contacts) | 2x (18 ... 3), 1x (18 ... 1) |
| AWG Conductors (Auxiliary Contacts) | 2x (20 ... 16), 2x (18 ... 14) |
The Siemens 3RU1136-1JB0 is a thermal overload relay designed to provide efficient protection for motors in the event of overload or phase failure. This relay is part of the SIRIUS product family, renowned for its reliability and versatility in various industrial applications. With an adjustable response current range of 7 to 10 A, it ensures precise protection for motors according to the actual load conditions.
Crafted for direct mounting onto contactors, the 3RU1136-1JB0 features a compact size S2 footprint, making it an ideal choice for space-constrained environments. The relay is equipped with one normally open (NO) and one normally closed (NC) contact, offering flexibility for integration into control circuits.
The device operates within an ambient temperature range of -20 to +70°C, ensuring consistent performance even in demanding conditions. It is also designed to withstand impulse voltages up to 6 kV and is rated for insulation voltages up to 690V, with a degree of pollution 3, which makes it suitable for a wide range of industrial applications.
The 3RU1136-1JB0 is engineered with user safety in mind, featuring finger-safe terminals and a protection class of IP20 on the front, safeguarding users during installation and maintenance. Its robust construction is designed to resist shocks up to 8g/10 ms, and it can be installed at altitudes up to 2000 meters above sea level without derating.
This overload relay is a Class 10 device, meaning it will trip within 10 seconds at 600% of the rated current, providing rapid response to prevent motor damage. The screw-type terminals allow for secure and reliable connections, accommodating a range of conductor sizes for both the main and auxiliary circuits.
The Siemens 3RU1136-1JB0 is a testament to Siemens' commitment to quality and innovation, offering a dependable solution for motor protection that is both effective and easy to integrate into various industrial control systems.
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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 interrupting the electrical supply when an overload condition is detected, typically used in conjunction with a contactor.
Can this overload relay be directly mounted to a contactor?
Yes, it is specifically 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 under conditions of an overload of 600% of its rated current.
What is the adjustable response current range for this device?
The adjustable response current range for this overload relay is between 7 to 10 amperes, allowing for customisation based on the motor's requirements.
What type of terminals does this overload relay have?
It is equipped with screw-type terminals for both the main current circuit and the auxiliary and control current circuit.
What is the size of this overload relay?
The overload relay is of size S2, which is a standard size classification within its product range.
What are the ambient temperature operating limits for this relay?
The relay can operate within an ambient temperature range of -20 to +70 degrees Celsius during operation.
Is this overload relay suitable for use in hazardous locations?
Yes, it has certifications that allow for its use in certain hazardous locations, ensuring safety and compliance in such environments.
What is the insulation voltage rating for this overload relay?
The insulation voltage rating for this relay is 690 volts, with a degree of pollution 3.
What is the protection class of this overload relay?
The protection class for the front side of this overload relay is IP20, indicating a level of protection against solid objects larger than 12mm and no protection against water.
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