Pyramid Bench Power Supply | AC-to-DC Power Converter | 50 Amp Power Supply with Adjustable Voltage Control | Rack Mount (PS52KX) Hobbyist Bench Power Supply - 46.0 Amp (Constant), 50.0 Amp (Surge) - 12V DC Linear / Regulated Power Supply Design Provides Constant Source of DC Voltage - Simple Electronic Plug-in Operation, Hassle-Free Screw Terminal Connectors AC-to-DC Power Conversion Safe for Work Station & Tabletop Placement - Built-in Cooling Fan - Power ON / OFF Switch Eliminates the Need of Battery or Additional External Power Source - Built-in Electronic Overload & Short Circuit Protection Rugged & Durable Cabinet Heatsink & Housing - Used for Component & Device Equipment Testing, Operation & Performance Built-In Cooling Fan 40-Amp Constant/50-Amp Surge Screw Terminal Connectors Crowbar Over-Voltage Protection