3RU2136-4FB0 – Siemens SIRIUS Thermal Overload Relay, 28-40A, In Stock
Buy the Siemens 3RU2136-4FB0, a SIRIUS 3RU2 thermal overload relay, 28-40A adjustable, CLASS 10, Size S2, for direct mounting on 3RT2035-3RT2038 contactors, screw terminal, manual/automatic reset. In stock and available for fast shipping. Get a quote today.
Key Technical Specifications
- Product Type: Thermal overload relay, SIRIUS 3RU2 series
- Overload Relay Size: S2
- Compatible Contactor Size: S2 (3RT2035, 3RT2036, 3RT2037, 3RT2038)
- Current Adjustment Range: 28–40 A
- Trip Class: CLASS 10
- Auxiliary Contacts: 1 NO + 1 NC
- Terminal Type: Screw (main and auxiliary circuit)
- Reset Type: Manual or automatic, selectable via blue RESET button
- Power Loss (AC hot operating state): 15.6 W total; 5.2 W per pole
- Rated Insulation Voltage: 690 V
- Rated Impulse Withstand Voltage (Uimp): 6 kV
- Max. Permissible Voltage for Protective Separation: 415 V (ungrounded star point)
- Protection Class: IP20 (front)
- Shock Resistance: 8g / 10 ms
- Max. Installation Altitude: 2,000 m
Design and Performance
Higher-Current Range for Larger Motor Applications
Extending motor protection coverage up to 40A, the 3RU2136-4FB0 handles larger loads than the smaller S00/S0-size overload relays, suiting demanding motor applications within a compact S2 platform.
Phase Failure Protection to Minimize Single-Phase Damage
Featuring phase failure protection to minimize the heating of the load during single-phase operation as a result of phase failure, this relay helps prevent motor winding damage from an undetected lost phase.
Simple Reset Mode Switching
Manual or automatic resetting is easily selected by depressing and rotating the blue RESET button, giving flexibility to match reset behavior to the application’s safety and maintenance requirements without special tools.
Direct, Space-Saving Contactor Mounting
Electrically and mechanically optimized to match new SIRIUS 3RT203 size S2 contactors, this overload relay can be directly mounted onto compatible contactors to save panel space, in addition to standalone individual mounting.
Reliable Protection Against Overload and Phase Asymmetry
SIRIUS overload relays reliably protect loads against overload, phase asymmetry, and phase failure, supporting dependable three-phase motor protection across demanding industrial motor control applications.
Why Buy the 3RU2136-4FB0 From Us
- In stock and ready for immediate dispatch
- Fast shipping on every order
- Commercial advisory support to help you confirm compatibility with your 3RT203 contactor
- Competitive pricing — get a quote in minutes
