Siemens 3RB2 Overload Relay NO/NC, 3 → 12 A F.L.C, 20 A Contact Rating, 5.5 kW, 3P, Sirius Classic
Technical Document
Specifications
Brand
SiemensFLC Motor Rating
3 → 12 A
Contact Current Rating
20 A
Range
Sirius Classic
Pole Configuration
3P
Series
3RB2
Mounting Style
Direct Contactor
Power Rating
5.5 kW
Normal State Configuration
NO/NC
Reset Method
Automatic, Manual
Terminal Type
Screw
Number Of Auxiliary Contacts
2
Width
45mm
Depth
75mm
Length
73mm
Minimum Operating Temperature
-25°C
Maximum Operating Temperature
+60°C
Operating Temperature Range
-25 → +60 °C
Contact Voltage Rating
690 V ac
Country of Origin
Czech Republic
Product details
3RB20-series electronic overload relay
Range of variants reduced thanks to large adjustment range
Overload protection for three-phase motors
On-site RESET is not necessary thanks to the automatic RESET function
The 3RB20 cannot be used with DC current or behind frequency inverters
Mechanically and electrically compatible with 3RT contactors and 3RW soft starters
Internal power supply (no supply voltage required)
Rapid triggering (< 3 s) for protection against phase failure
With auxiliary contacts 1 N/O & 1 N/C, manual / automatic RESET, switch position indication, TEST function and STOP button
Class 10; provides solutions for heavy start-up loads
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
3 → 12 A
Contact Current Rating
20 A
Range
Sirius Classic
Pole Configuration
3P
Series
3RB2
Mounting Style
Direct Contactor
Power Rating
5.5 kW
Normal State Configuration
NO/NC
Reset Method
Automatic, Manual
Terminal Type
Screw
Number Of Auxiliary Contacts
2
Width
45mm
Depth
75mm
Length
73mm
Minimum Operating Temperature
-25°C
Maximum Operating Temperature
+60°C
Operating Temperature Range
-25 → +60 °C
Contact Voltage Rating
690 V ac
Country of Origin
Czech Republic
Product details
3RB20-series electronic overload relay
Range of variants reduced thanks to large adjustment range
Overload protection for three-phase motors
On-site RESET is not necessary thanks to the automatic RESET function
The 3RB20 cannot be used with DC current or behind frequency inverters
Mechanically and electrically compatible with 3RT contactors and 3RW soft starters
Internal power supply (no supply voltage required)
Rapid triggering (< 3 s) for protection against phase failure
With auxiliary contacts 1 N/O & 1 N/C, manual / automatic RESET, switch position indication, TEST function and STOP button
Class 10; provides solutions for heavy start-up loads
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