Siemens 3RU1136-4BB0
Brand: Siemens
Model: 3RU1136-4BB0
Inventory situation: Goods are available in stock.
Product features
A premium thermal overload relay from the Siemens SIRIUS series, the Siemens 3RU1136-4BB0 is made to guard against damage to three-phase motors. The Siemens 3RU1136-4BB0's adjustable current range is one of its primary features. You can easily adjust it to meet the needs of your motor because it operates with currents ranging from 14A to 20A. Its Class 10 tripping performance prevents motor damage early by cutting power within 10 seconds if the motor is overloaded. Additionally, it has phase loss protection, which means that the relay trips instantly to protect the motor in the event that one of the three power phases fails.
The Siemens 3RU1136-4BB0 is easy to use. It can be reset manually or automatically. If you select automatic reset, after the motor cools down, it restarts on its own after three minutes. You can use manual reset, which involves pressing a button to restart after resolving an issue, for safer operation. Additionally, it features a stop button to swiftly shut off the motor when necessary and a test function to see if the relay is operating correctly.
To conserve space, it can be installed directly on Siemens 3RT1033, 3RT1034, 3RT1035, or 3RT1036 contactors (size S2). It can also be installed separately on a 35 mm DIN rail if necessary. Because it uses screw terminals, wiring is simple and safe. The relay is small enough for most control cabinets, measuring 105 mm in height, 55 mm in width, and 118 mm in depth. It weighs roughly 0.32 kg.
Specifications
|
Model |
3RU1136-4BB0 |
|---|---|
|
Series |
SIRIUS |
|
Module type |
Thermal Overload Relay |
|
Tripping Class |
Class 10 |
|
Auxiliary Contacts |
1 NC + 1 NO |
|
International Certifications |
CE, CSA, UL, EAC, CCC |
|
Rated Operating Voltage (Ue) |
690 V AC (main circuit) |
|
Dimensions |
105 mm (H) × 55 mm (W) × 118 mm (D) |
Precautions
First, take careful note of the surroundings. Never set the Siemens 3RU1136-4BB0's current range below 14A or above 20A because it is adjustable between 14A and 20A. Always adjust the setting to the rated current of your motor, which is typically 0.95 to 1.05 times the motor's rated current. For instance, set the Siemens 3RU1136-4BB0 to 18A if the rated current of your motor is 18A. Lower the setting to 0.58 times the motor's rated current if you use a star-delta motor starter and the relay is in the delta circuit. This will avoid false tripping or inadequate protection.
Second, exercise caution when wiring. There are distinct main circuits for power and auxiliary circuits for control signals on the Siemens 3RU1136-4BB0. These two kinds of wires should never be mixed. After wiring, tighten the screw terminals firmly because loose wires can lead to poor contact or overheating, which can harm the motor or relay. Because thicker wires cannot fit the terminals correctly, use wires no thicker than 2.5 mm².
Third, be mindful of the boundaries of the environment. Temperatures between -20°C and +60°C are ideal for the Siemens 3RU1136-4BB0. To prevent early tripping, you must lower the relay's load if the temperature is higher than 60°C. For instance, if it is set to 20A at 60°C, reduce it to 18A at 70°C. Because of its IP20 protection rating, which only protects against tiny dust particles, it should not be used in damp areas (such as those near water pipes) or extremely dusty areas (such as cement factories) without additional protection, as moisture or excessive dust can damage internal components.
FAQ
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