The ready-for-connection compact hydraulic power pack can be used in applications where consumers with a low oil volume requirement have to be connected in intermittent operation (S 3), e.g. in machine tool and jig construction, or in general machine engineering. The power pack consists of the housing (tank) with integrated motor and pump. The filling gauge on HC(W) size 2, 3 and 4 types enables the fluid level to be controlled even during operation. The electrical connections are made via an integrated terminal box. Compact control systems can be created by mounting various combinations of connection blocks and valve banks. Float switches and temperature switches are optionally available for perfect monitoring.