These ready for connection hydraulic power packs are intended for intermittent operation (S 3) and used to supply pressurized fluid to consumers with low fluid demand, such as for jigs or machine tools or general machine building. The power pack consists of a housing (tank) with integrated motor and pump. The housing of size 2, 3, and 4 features also a filling gauge, enabling visual control of the fluid level even during operation. The electrical connection takes place via an integrated terminal box. Complete hydraulic control systems can be created by directly mounting various combinations of connection blocks and valve banks to the hydraulic power pack. Float switch as well as temperature switch are available as option for the optimal supervision.