Siemens 3RB Overload Relay 1NO + 1NC, 25 → 100 A F.L.C, 315 A Contact Rating, 45 kW, 3P, Sirius Classic
- RS Stock No.:
- 621-1981
- Mfr. Part No.:
- 3RB2143-4EB0
- Manufacturer:
- Siemens
Discontinued product
- RS Stock No.:
- 621-1981
- Mfr. Part No.:
- 3RB2143-4EB0
- Manufacturer:
- Siemens
Technical data sheets
Legislation and Compliance
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
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
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
Specifications
Attribute | Value |
|---|---|
| FLC Motor Rating | 25 → 100 A |
| Contact Current Rating | 315 A |
| Range | Sirius Classic |
| Pole Configuration | 3P |
| Series | 3RB |
| Mounting Style | Direct Contactor |
| Power Rating | 45 kW |
| Normal State Configuration | NO/NC |
| Terminal Type | Screw |
| Reset Method | Automatic, Manual |
| Width | 70mm |
| Number Of Auxiliary Contacts | 2 |
| Length | 106mm |
| Depth | 124mm |
| Minimum Operating Temperature | -25°C |
| Maximum Operating Temperature | +60°C |
| Operating Temperature Range | -25 → +60 °C |
| Contact Voltage Rating | 1 kV ac |