Siemens, SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC, 3.5A, 5 A F.L.C, 5A Contact Rating, 4 kW 3
- RS Stock No.:
- 706-1623
- Mfr. Part No.:
- 3RU2126-1FB0
- Brand:
- Siemens
Subtotal (1 unit)*
£48.45
(exc. VAT)
£58.14
(inc. VAT)
FREE delivery for orders over £60.00
Temporarily out of stock
- Shipping from 18 May 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £48.45 |
*price indicative
- RS Stock No.:
- 706-1623
- Mfr. Part No.:
- 3RU2126-1FB0
- 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 | Thermal Overload Relay | |
| FLC Motor Rating | 3.5, 5A | |
| Relay Contact Current | 5A | |
| Mount Type | Direct | |
| Series | SIRIUS 3RU2 | |
| Power Rating | 4kW | |
| Pole and Throw Configuration | 3 | |
| Terminal Type | Screw | |
| Normal State Configuration | 1 NO/1 NC | |
| Reset Method | Automatic & Manual | |
| IP Rating | IP20 | |
| Width | 45mm | |
| Adjustable Current Range | 3.5 to 5 A | |
| Minimum Operating Temperature | -40°C | |
| Number of Auxiliary Contacts | 2 | |
| Contact Voltage | 690V ac | |
| Maximum Operating Temperature | 70°C | |
| Length | 87mm | |
| Standards/Approvals | IEC 81346-2, IEC 61508, UL Approved, IEC 60068-2-27, EAC Approved, IEC 65029, CSA Approved, CE Approved, CCC approved | |
| Depth | 73mm | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Product Type Thermal Overload Relay | ||
FLC Motor Rating 3.5, 5A | ||
Relay Contact Current 5A | ||
Mount Type Direct | ||
Series SIRIUS 3RU2 | ||
Power Rating 4kW | ||
Pole and Throw Configuration 3 | ||
Terminal Type Screw | ||
Normal State Configuration 1 NO/1 NC | ||
Reset Method Automatic & Manual | ||
IP Rating IP20 | ||
Width 45mm | ||
Adjustable Current Range 3.5 to 5 A | ||
Minimum Operating Temperature -40°C | ||
Number of Auxiliary Contacts 2 | ||
Contact Voltage 690V ac | ||
Maximum Operating Temperature 70°C | ||
Length 87mm | ||
Standards/Approvals IEC 81346-2, IEC 61508, UL Approved, IEC 60068-2-27, EAC Approved, IEC 65029, CSA Approved, CE Approved, CCC approved | ||
Depth 73mm | ||
- COO (Country of Origin):
- DE
Overload Relay - 3RU range
Switch position indicator and test function
STOP button
Selector switch for manual/automatic reset
Screw connection or Spring-clamp versions
Impulse voltage resistance 6 kV
Insulation voltage 690V
Surface or DIN-rail stand-alone mounts available, see 706-1699 etc
The 3RU21 thermal overload relays up to 80 A have been designed for current-sensitive protection of loads with normal starting.
These thermal overload relays for use with Sirius Size S0 & S00 Contactors
Note
Screw terminals can only be used with screw terminal overloads and spring terminals can only be used with spring terminal overloads.
Approvals
CE, UL, CSA