Siemens Overload Relay – 1NO + 1NC, 4 A Contact Rating, 250 kW, 3P, SIRIUS Classic
- RS Stock No.:
- 7518860
- Mfr. Prt No.:
- 3RB2066-1MC2
- Brand:
- Siemens
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 7518860 |
| Product description | Siemens Overload Relay - 1NO + 1NC, 4 A Contact Rating, 250 kW, 3P, SIRIUS Classic |
| Manufacturer / Brand | Siemens |
| Manufacturer part number | 3RB2066-1MC2 |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 7518860 |
| Product description | Siemens Overload Relay - 1NO + 1NC, 4 A Contact Rating, 250 kW, 3P, SIRIUS Classic |
| Manufacturer / Brand | Siemens |
| Manufacturer part number | 3RB2066-1MC2 |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Apr 26, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
Country of Origin: AU
Product Details
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
3RB20 Range
Internal power supply
Auxiliary contacts 1 NO+1NC
Manual/Automatic Reset
Switching position indicator
Test function
Phase failure/unbalance sensitivity
Specifications
| Attribute | Value |
| Brand | Siemens |
| Contact Current Rating | 4 A |
| Range | SIRIUS Classic |
| Minimum Operating Temperature | -25 °C |
| Number Of Auxiliary Contacts | 2 |
| Pole Configuration | 3P |
| Series | 3RB |
| Normal State Configuration | 1NO + 1NC |
| Contact Voltage Rating | 220 V dc, 230 V ac |
| Power Rating | 250 kW |
| Depth | 156 mm |
| Length | 145 mm |
| Width | 85 mm |
| Terminal Type | Screw |
| Operating Temperature Range | -25 → +60 °C |
| Maximum Operating Temperature | +60 °C |
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