Siemens 48BSH3M20 Solid-State Overload Relay 22-45A Trip Class 20 Panel Mount

Description The Siemens 48BSH3M20 is a solid-state overload relay designed to protect three-phase motors from overload conditions in industrial control systems. With an adjustable motor full-load current range of 22 to 45 A and trip class 20, it provides accurate and reliable protection for motor starters and control panels. This relay is commonly used in motor control centers and automation equipment requiring dependable thermal overload protection. Technical Specifications Condition New/Never Used Surplus Brand Siemens Category Industrial Automation Part Number 48BSH3M20 Subcategory Overload Relays Series 48 Model Protection Type Solid-State Overload Relay Motor FLA Range 22 – 45 A Trip Class Class 20 Phase 3 Phase Reset Type Manual Reset Mounting Type Panel Mount Terminal Type Screw Terminals Approvals UL, CSA Heater Required No (Heaterless Solid-State Design) Application Motor overload protection Weight 0.7 kg Information About 48BSH3M20 The 48BSH3M20 is part of the Siemens 48 model series of solid-state overload relays developed for industrial motor protection applications. It uses electronic sensing technology to monitor motor current and quickly detect overload conditions that could damage equipment. The relay is designed for use with three-phase motors and integrates easily with motor starters and control systems in manufacturing and process industries. Featuring panel mounting, manual reset capability, and a wide adjustable current range, it provides reliable protection for pumps, conveyors, compressors, and other motor-driven machinery. Key Features: Solid-State Protection Technology: Electronic sensing provides precise and consistent overload protection for industrial motors. Adjustable Current Range: Supports motor full-load currents from 22 A to 45 A for flexible application compatibility. Trip Class 20: Provides controlled trip timing suitable for standard motor starting conditions. Three-Phase Motor Protection: Designed specifically for 3-phase motor applications in industrial environments. Manual Reset Function: Allows operators to manually reset the relay after a trip event. Panel Mount Design: Designed for installation inside motor control panels and electrical enclosures. Starter Compatibility: Works with compatible motor starters for integrated motor protection systems. Heaterless Design: Solid-state technology eliminates the need for thermal heater elements. Reliable Industrial Construction: Engineered for stable operation in demanding industrial automation systems. Safety Certifications: Approved to UL and CSA standards for industrial electrical equipment. Wide Application Range: Suitable for pumps, compressors, conveyors, and other motor-driven machinery. The 48BSH3M20 delivers the reliability and precision required for protecting industrial motors and maintaining safe operation of motor control systems.