The Siemens 3RU2116-0EB0 is a compact and dependable thermal overload relay from the trusted SIRIUS 3RU2 Series, specifically designed to protect three-phase motors against overload conditions, phase failure, and excessive current draw. Featuring an adjustable current setting range of 0.28–0.40 A, Class 10 tripping characteristics, and compatibility with Size S00 Siemens contactors, this relay is ideally suited for low-current motor protection applications in industrial automation, OEM machinery, HVAC systems, pumps, fans, and process control equipment.
Utilizing Siemens' proven inverse-time thermal tripping technology, the relay continuously monitors motor current and disconnects the motor when overload conditions persist beyond safe operating limits. This helps prevent motor winding damage, insulation degradation, overheating, and unplanned downtime while permitting normal motor starting currents. Integrated phase-failure sensitivity provides enhanced protection against motor damage caused by phase imbalance or phase loss.
The Variant EB0 offers an adjustable overload release setting of 0.28–0.40 A, making it suitable for fractional horsepower motors, compact pumps, dosing equipment, ventilation systems, conveyors, packaging machinery, and precision industrial automation applications. Its compact S00 frame size allows efficient installation within motor control centers (MCCs), switchboards, and industrial control panels.
Designed for direct mounting on compatible Siemens contactors, the relay incorporates 1 Normally Open (NO) and 1 Normally Closed (NC) auxiliary contact for signaling, trip indication, and control circuit integration. It supports both manual and automatic reset modes and features screw-type terminals for secure electrical connections and simplified installation. The relay is engineered for reliable operation in demanding industrial environments and supports applications up to 690 V AC.
Manufactured to Siemens' stringent quality and performance standards, the 3RU2116-0EB0 delivers dependable long-term performance and accurate overload protection for critical low-current motor applications.
| Specification | Details |
|---|---|
| Product Name | Thermal Overload Relay |
| Part Number | 3RU2116-0EB0 |
| SKU | 3RU2116-0EB0 |
| Brand | Siemens |
| Product Family | SIRIUS 3RU2 |
| Product Type | Motor Protection Relay |
| Variant | EB0 |
| Current Setting Range | 0.28–0.40 A |
| Relay Size | S00 |
| Trip Class | Class 10 |
| Operating Principle | Thermal |
| Mounting Type | Direct Contactor Mounting |
| Main Circuit Connection | Screw Terminal |
| Auxiliary Circuit Connection | Screw Terminal |
| Auxiliary Contacts | 1 NO + 1 NC |
| Reset Type | Manual / Automatic |
| Rated Insulation Voltage | 690 V AC |
| Rated Frequency | 50/60 Hz |
| Number of Main Poles | 3 |
| Protection Features | Overload Protection & Phase Failure Detection |
| Operating Temperature | -40°C to +70°C |
| IP Rating | IP20 |
| Application | Industrial Motor Protection |
| Manufacturer | Siemens |
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