Siemens Industrial Controls 3UB85236EW2 Solid State Overload Relay - ESP200 10-40A 3-Phase

The Siemens Industrial Controls 3UB85236EW2 is a Class 958 ESP200 solid state electronic overload relay designed to provide advanced motor protection for three-phase systems with current ratings from 10 to 40 amps. This self-powered relay delivers exceptional repeat accuracy of over 99%, allowing precise trip settings that extend motor life and reduce operational costs.

Key Features:

• Selectable trip classes (5, 10, 20, or 30) via DIP switches for light, normal, and heavy starting conditions
• Phase loss protection that trips in less than 3 seconds to prevent motor burnout
• Phase unbalance protection to minimize temperature rise on asymmetrical three-phase systems
• Ground fault protection at 60% of motor current for enhanced system protection
• Thermal memory prevents motor restart while still hot, avoiding premature failure
• FLA dial with wide 4:1 adjustment ratio for easy configuration
• Self-powered design requires no external power source
• Self-protected in short circuit conditions when used with proper fuses
• Manual, automatic, and remote reset options (24 VDC for remote)
• Ambient temperature insensitive operation from -25°C to +60°C
• Visible trip indicator for quick fault identification
• Conformally coated circuit board for environmental protection
• 1 NO and 1 NC contacts standard

The ESP200 series is particularly well-suited for HVAC systems, refrigeration compressors, and artificially cooled motors. Its simple configuration requires no software or manuals—just set the FLA dial to match the motor nameplate and configure DIP switches per faceplate engraving. UL Listed and CSA Certified for reliable industrial service.