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Siemens SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC, 25A F.L.C, 3A Contact Rating, 22kW, Direct Mount, 690V AC 3RU2136-4DB0
Specifications
| Country of Origin | Germany |
|---|---|
| Brand | Siemens |
| Length | 55mm |
| Model | 3RU2136-4DB0 |
| Depth | 91.2mm |
| IP Rating | IP20 |
| Width | 55mm |
| Mount Type | Direct |
| Series | SIRIUS 3RU2 |
| Power Rating | 22kW |
| Maximum Operating Temperature | 70°C |
| Minimum Operating Temperature | -40°C |
| Terminal type | Screw |
| Supply Voltage | 690V ac |
| Contact Voltage | 690V ac |
| Reset Method | Automatic & Manual |
| Normal State Configuration | 1 NO/1 NC |
| Relay Contact Current | 3A |
| Number of Auxiliary Contacts | 2 |
| Pole and Throw Configuration | 3 |
| FLC Motor Rating | 25A |
| Adjustable Current Range | 18 → 25 A |
Key Features
- Designed for motor and circuit protection with adjustable current range from 18 to 25A.
- Suitable for DIN rail or direct mounting in industrial panels.
- High contact voltage rating up to 690V AC with screw terminal type.
- Features automatic and manual reset methods for flexible operation.
- Compact size (55mm width x 55mm length x 91.2mm depth) fits easily in control cabinets.
- IP20 ingress protection for enhanced safety and reliability.
- Operates reliably in temperatures from -40°C to 70°C.
- Meets international standards including UL, CSA, and IEC.
Product Description
Siemens 3RU2136-4DB0 is a high-performance thermal overload relay from the SIRIUS 3RU2 series, offering robust motor protection with 1 NO and 1 NC contacts. This relay is suitable for full load currents up to 25A and rated for applications up to 22kW, making it an ideal solution for industrial motors and machinery.
Designed for motor protection in automation and process control environments. Adjustable current range from 18A to 25A ensures versatile application across various motor ratings. Direct mounting or DIN rail installation offers flexibility for control cabinet layouts.
Features a high contact voltage rating of 690V AC, supporting demanding electrical systems. Screw terminal type provides secure, easy wiring and long-term reliability. Supports both automatic and manual reset for safe and convenient operation following overloads.
Compact form factor (55mm x 55mm x 91.2mm) makes integration straightforward in equipment panels. IP20 protection guards internal components against dust and touch, boosting safety. Rated for operation in harsh industrial environments from -40°C to 70°C.
Compliant with international standards including UL, CSA, and IEC certifications.
The Siemens SIRIUS 3RU2 series overload relay is engineered for use in manufacturing, automation, HVAC, and water treatment facilities. It is commonly installed in control panels for motors, pumps, compressors, and other rotating machinery where precise overload protection is required.
The relay features a STOP button, selector switch for manual or automatic reset, and a clear switch position indicator for operational clarity. Its robust design and certification compliance ensure reliable long-term performance in demanding industrial contexts.
This product is made in Germany, reflecting Siemens’ commitment to quality and innovation in electrical protection devices. Explore more Siemens overload and protection relays within the Electronics & Electricals category at EnvMart.
Explore more products in our Overload Relays category.
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Frequently Asked Questions
The maximum full load current rating for this relay is 25A.
The adjustable current range of this model is from 18A to 25A.
This overload relay has a power rating of 22kW.
It features a normal state configuration of 1 normally open (NO) and 1 normally closed (NC) contact.
The supply voltage rating for this overload relay is 690V AC.
This relay can be directly mounted or installed on a DIN rail.
The relay has an IP20 ingress protection rating.
The dimensions of this model are 55mm in width, 55mm in length, and 91.2mm in depth.
It operates reliably in temperatures ranging from -40°C to 70°C.
This model supports both automatic and manual reset methods.
It meets international standards including UL, CSA, and IEC certifications.
This overload relay is commonly used in manufacturing, automation, HVAC, and water treatment facilities for motor protection.
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