787-852 WAGO Industrial Automation Components

Wago 787-852 is a power supply unit featuring a pro switch-mode AC/DC power supply unit (SMPS PSU) with TopBoost and PowerBoost capabilities, allowing for both series and parallel operation. It includes a relay contact output with status indication (DC OK) and is designed for a supply voltage range of 480-780Vdc with CAGE-CLAMP spring connections. The unit has a rated current of 20A, with PowerBoost capabilities of 40A for 4 seconds, 30A for 16 seconds, and TopBoost of 80A for 50 milliseconds. It offers a rated power of 480W and operates within an ambient air temperature range for operation of -25°C to +70°C and for storage from -25°C to +85°C. The design includes a DC-OK relay contact output and line monitor, with a degree of protection rated at IP20. The unit's dimensions are 171mm in height, 77mm in width, and 179mm in depth, supporting a 3-phase AC (3AC) or DC supply voltage. It features internal fuses of 3 x T 2.5A / 440Vac, adjustable for constant current or fuse mode, and includes short-circuit and open circuit protection with a typical current limitation function of 1.1 x Io nom. The control voltage is adjustable between 22.8-28.8Vdc, and it is designed for mounting on a DIN-35 rail. The response time is 13ms for a 3 x 400Vac input, with a power dissipation/losses specification and a climatic resistance that ensures operation within a humidity range of 5-96% RH without condensation.