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
- Brand:
- Siemens
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Currently unavailable
We don’t know if this item will be back in stock, it is being discontinued by the manufacturer.
- RS Stock No.:
- 621-1981
- Mfr. Part No.:
- 3RB2143-4EB0
- Brand:
- Siemens
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| 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 | 1NO + 1NC | |
| Reset Method | Automatic, Manual | |
| Terminal Type | Screw | |
| Number Of Auxiliary Contacts | 2 | |
| Width | 70mm | |
| Depth | 124mm | |
| Length | 106mm | |
| Maximum Operating Temperature | +60°C | |
| Minimum Operating Temperature | -25°C | |
| Operating Temperature Range | -25 → +60 °C | |
| Contact Voltage Rating | 1 kV ac | |
Select all | ||
|---|---|---|
Brand Siemens | ||
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 1NO + 1NC | ||
Reset Method Automatic, Manual | ||
Terminal Type Screw | ||
Number Of Auxiliary Contacts 2 | ||
Width 70mm | ||
Depth 124mm | ||
Length 106mm | ||
Maximum Operating Temperature +60°C | ||
Minimum Operating Temperature -25°C | ||
Operating Temperature Range -25 → +60 °C | ||
Contact Voltage Rating 1 kV ac | ||
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