Siemens, 3RB Overload Relay 1 NO/1 NC, 630A F.L.C, 4A Contact Rating, 250 kW 3
- RS Stock No.:
- 751-8860
- Mfr. Part No.:
- 3RB2066-1MC2
- Brand:
- Siemens
Subtotal (1 unit)*
£400.45
(exc. VAT)
£480.54
(inc. VAT)
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In Stock
- Plus 3 unit(s) shipping from 27 April 2026
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Units | Per unit |
|---|---|
| 1 + | £400.45 |
*price indicative
- RS Stock No.:
- 751-8860
- Mfr. Part No.:
- 3RB2066-1MC2
- 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 | 630A | |
| Relay Contact Current | 4A | |
| Series | 3RB | |
| Mount Type | Direct | |
| Power Rating | 250kW | |
| Pole and Throw Configuration | 3 | |
| Normal State Configuration | 1 NO/1 NC | |
| Terminal Type | Screw | |
| Reset Method | Automatic & Manual | |
| IP Rating | IP00 | |
| Adjustable Current Range | 160 to 630 A | |
| Number of Auxiliary Contacts | 2 | |
| Width | 85mm | |
| Minimum Operating Temperature | -25°C | |
| Contact Voltage | 230V ac | |
| Length | 145mm | |
| Maximum Operating Temperature | 60°C | |
| Depth | 156mm | |
| Standards/Approvals | REACH, EAC, IEC, CE, RoHS, CCC, WEEE (2012/19/EU), UKCA, UL | |
| Supply Voltage | 400V | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Product Type Overload Relay | ||
FLC Motor Rating 630A | ||
Relay Contact Current 4A | ||
Series 3RB | ||
Mount Type Direct | ||
Power Rating 250kW | ||
Pole and Throw Configuration 3 | ||
Normal State Configuration 1 NO/1 NC | ||
Terminal Type Screw | ||
Reset Method Automatic & Manual | ||
IP Rating IP00 | ||
Adjustable Current Range 160 to 630 A | ||
Number of Auxiliary Contacts 2 | ||
Width 85mm | ||
Minimum Operating Temperature -25°C | ||
Contact Voltage 230V ac | ||
Length 145mm | ||
Maximum Operating Temperature 60°C | ||
Depth 156mm | ||
Standards/Approvals REACH, EAC, IEC, CE, RoHS, CCC, WEEE (2012/19/EU), UKCA, UL | ||
Supply Voltage 400V | ||
- COO (Country of Origin):
- DE
Siemens SIRIUS Classic Overload Relay, 250kW, 4A - 3RB Series - 3RB2066-1MC2
Protect your industrial motors from overheating due to overload with this robust relay from Siemens' SIRIUS Classic range. It functions as part of the motor starter and works by monitoring the current flowing in the circuit. When the current rises, it'll trip above a set limit over a period of time and cut off power to the motor, protecting it from damage. This overload relay has a test function, so you can easily check that it's in good working condition. Manual and automatic reset options enable a quick restart after it's tripped. You can easily connect cables to this relay thanks to its screw terminals, which make installation quick and efficient.
• Power rating of 250kW for heavy-duty industrial use
• Broad operating temperature range of -25°C to +60°C for use in demanding environments
• Thermoplastic housing material is durable and impact resistant
• Light weight of 1.8kg for easy handling
How do I maintain this overload relay?
Maintain this relay by carrying out regular cleaning and rust removal. It's also important to check and tighten any loose screws to avoid heat accumulation from partial contacts. Frequent testing with a simulated overload current will flag up any performance issues.