Siemens, SIRIUS Overload Relay 1 NO/1 NC, 50A F.L.C, 4A Contact Rating, 45 kW, 48V 3
- RS Stock No.:
- 122-9406
- Mfr. Part No.:
- 3RB3133-4UB0
- Brand:
- Siemens
Subtotal (1 unit)*
£224.26
(exc. VAT)
£269.11
(inc. VAT)
FREE delivery for orders over £60.00
Stocked by manufacturer
- Ready to ship from 15 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £224.26 |
*price indicative
- RS Stock No.:
- 122-9406
- Mfr. Part No.:
- 3RB3133-4UB0
- 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 | |
| Product Type | Overload Relay | |
| FLC Motor Rating | 50A | |
| Relay Contact Current | 4A | |
| Series | SIRIUS | |
| Mount Type | Direct | |
| Power Rating | 45kW | |
| Pole and Throw Configuration | 3 | |
| Terminal Type | Screw | |
| Normal State Configuration | 1 NO/1 NC | |
| IP Rating | IP20 | |
| Width | 55mm | |
| Number of Auxiliary Contacts | 2 | |
| Adjustable Current Range | 12.5 to 50 A | |
| Minimum Operating Temperature | -25°C | |
| Maximum Operating Temperature | 60°C | |
| Length | 55mm | |
| Contact Voltage | 690V ac | |
| Standards/Approvals | IEC 60529, IEC 60068-2-27, B600/R300, UL, IEC 81346-2, CSA | |
| Depth | 98.9mm | |
| Control Voltage | 48V | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Product Type Overload Relay | ||
FLC Motor Rating 50A | ||
Relay Contact Current 4A | ||
Series SIRIUS | ||
Mount Type Direct | ||
Power Rating 45kW | ||
Pole and Throw Configuration 3 | ||
Terminal Type Screw | ||
Normal State Configuration 1 NO/1 NC | ||
IP Rating IP20 | ||
Width 55mm | ||
Number of Auxiliary Contacts 2 | ||
Adjustable Current Range 12.5 to 50 A | ||
Minimum Operating Temperature -25°C | ||
Maximum Operating Temperature 60°C | ||
Length 55mm | ||
Contact Voltage 690V ac | ||
Standards/Approvals IEC 60529, IEC 60068-2-27, B600/R300, UL, IEC 81346-2, CSA | ||
Depth 98.9mm | ||
Control Voltage 48V | ||
- COO (Country of Origin):
- CZ
Solid State Overload Relay - 3RB range
3RB30 and 3RB31 solid-state overload relays up to 80 A with internal power supply have been designed for current-sensitive protection of loads with normal and heavy starting against excessive temperature rises due to overload, phase unbalance or phase failure
Switch position indicator and test function
Trip class setting/internal ground-fault detection
Selector switch for manual/automatic reset
Class 10 and Class 20
Direct mounting
PTB 09 ATEX 3001 Ex II (2) GD
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
Approvals
CE, UL, CSA