Siemens 3RB Overload Relay 1NO + 1NC, 12.5 → 50 A F.L.C, 80 A Contact Rating, 22 kW, 3P, Sirius Classic
Technical Document
Specifications
Brand
SiemensFLC Motor Rating
12.5 → 50 A
Contact Current Rating
80 A
Range
Sirius Classic
Pole Configuration
3P
Series
3RB
Mounting Style
Direct Contactor
Power Rating
22 kW
Normal State Configuration
1NO + 1NC
Terminal Type
Screw
Reset Method
Automatic, Manual
Number Of Auxiliary Contacts
2
Width
55mm
Depth
109mm
Length
92mm
Maximum Operating Temperature
+60°C
Minimum Operating Temperature
-25°C
Operating Temperature Range
-25 → +60 °C
Contact Voltage Rating
690 V ac
Product details
3RB21 Range
Internal power supply
Auxiliary contacts 1 NO+1NC
Manual/Automatic Reset
Switching position indicator
Internal ground fault
Eletrical remote reset
Test function
Phase failure/unbalance sensitivity
Selectable trip class 5,10,20 and 30 operation
Warning
This product is in obsolescence mode and is due for discontinuation by the manufacturer. We recommend that you review the alternative highlighted by the manufacturer. Alternatively, refer to the cross reference list in the Technical Reference section which highlights the upgrade path for your current generation of products.
Electronic Overload Relays
The 3RB2 range of Solid State Electronic overloads can be connected directly to Siemens SIRIUS contactors to provide accurate motor overload protection with enhanced single phase sensitivity,Application: Protection of 3 phase AC motors in sinusoidal 50/60Hz network. These relays are not suitable for the protection of single phase or DC loads,Select according to motor full load current and contactor frame size e,g. S00
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Technical Document
Specifications
Brand
SiemensFLC Motor Rating
12.5 → 50 A
Contact Current Rating
80 A
Range
Sirius Classic
Pole Configuration
3P
Series
3RB
Mounting Style
Direct Contactor
Power Rating
22 kW
Normal State Configuration
1NO + 1NC
Terminal Type
Screw
Reset Method
Automatic, Manual
Number Of Auxiliary Contacts
2
Width
55mm
Depth
109mm
Length
92mm
Maximum Operating Temperature
+60°C
Minimum Operating Temperature
-25°C
Operating Temperature Range
-25 → +60 °C
Contact Voltage Rating
690 V ac
Product details
3RB21 Range
Internal power supply
Auxiliary contacts 1 NO+1NC
Manual/Automatic Reset
Switching position indicator
Internal ground fault
Eletrical remote reset
Test function
Phase failure/unbalance sensitivity
Selectable trip class 5,10,20 and 30 operation
Warning
This product is in obsolescence mode and is due for discontinuation by the manufacturer. We recommend that you review the alternative highlighted by the manufacturer. Alternatively, refer to the cross reference list in the Technical Reference section which highlights the upgrade path for your current generation of products.
Electronic Overload Relays
The 3RB2 range of Solid State Electronic overloads can be connected directly to Siemens SIRIUS contactors to provide accurate motor overload protection with enhanced single phase sensitivity,Application: Protection of 3 phase AC motors in sinusoidal 50/60Hz network. These relays are not suitable for the protection of single phase or DC loads,Select according to motor full load current and contactor frame size e,g. S00
Ideate. Create. Collaborate
JOIN FOR FREE
No hidden fees!
- Download and use our DesignSpark software for your PCB and 3D Mechanical designs
- View and contribute website content and forums
- Download 3D Models, Schematics and Footprints from more than a million products