Ejector refrigeration circuit with: a high pressure ejector circuit comprising in the direction of flow of a circulating refrigerant: a heat rejecting heat exchanger/gas cooler having an inlet side and an outlet side; at least one ejector comprising a primary high pressure input port, a secondary low pressure input port, and an output port, the primary high pressure input port being fluidly connected to the outlet side of the heat rejecting heat exchanger/gas cooler; a receiver, having a liquid outlet, a gas outlet and an inlet, which is fluidly connected to the output port of the at least one ejector; at least one compressor (2a, 2b, 2c) having an inlet side (21a, 21b, 21c) and an outlet side (22a, 22b, 22c), the inlet side (21a, 21b, 21c) of the at least one compressor (2a, 2b, 2c) being fluidly connected to gas outlet of the receiver and the outlet side (22a, 22b, 22c) of the at least one compressor (2a, 2b, 2c) being fluidly connected to the inlet side of the heat rejecting heat exchanger/gas cooler; and a refrigerating evaporator flowpath comprising in the direction of flow of the circulating refrigerant: a liquid pump having an inlet side, which is fluidly connected to the liquid outlet of the receiver, and an outlet side; at least one refrigeration expansion device having an inlet side, which is fluidly connected to the outlet side of the liquid pump, and an outlet side; and at least one refrigeration evaporator fluidly connected between the outlet side of the at least one refrigeration expansion device and the secondary low pressure input port of the at least one ejector; wherein the liquid pump is located outside the receiver and/or the liquid pump comprises a bypass-line including a switchable bypass valve allowing refrigerant to selectively bypass the liquid pump by opening the switchable bypass valve. a high pressure ejector circuit comprising in the direction of flow of a circulating refrigerant: a heat rejecting heat exchanger/gas cooler having an inlet side and an outlet side; at least one ejector comprising a primary high pressure input port, a secondary low pressure input port, and an output port, the primary high pressure input port being fluidly connected to the outlet side of the heat rejecting heat exchanger/gas cooler; a receiver, having a liquid outlet, a gas outlet and an inlet, which is fluidly connected to the output port of the at least one ejector; at least one compressor (2a, 2b, 2c) having an inlet side (21a, 21b, 21c) and an outlet side (22a, 22b, 22c), the inlet side (21a, 21b, 21c) of the at least one compressor (2a, 2b, 2c) being fluidly connected to gas outlet of the receiver and the outlet side (22a, 22b, 22c) of the at least one compressor (2a, 2b, 2c) being fluidly connected to the inlet side of the heat rejecting heat exchanger/gas cooler; and a heat rejecting heat exchanger/gas cooler having an inlet side and an outlet side; at least one ejector comprising a primary high pressure input port, a secondary low pressure input port, and an output port, the primary high pressure input port being fluidly connected to the outlet side of the heat rejecting heat exchanger/gas cooler; a receiver, having a liquid outlet, a gas outlet and an inlet, which is fluidly connected to the output port of the at least one ejector; at least one compressor (2a, 2b, 2c) having an inlet side (21a, 21b, 21c) and an outlet side (22a, 22b, 22c), the inlet side (21a, 21b, 21c) of the at least one compressor (2a, 2b, 2c) being fluidly connected to gas outlet of the receiver and the outlet side (22a, 22b, 22c) of the at least one compressor (2a, 2b, 2c) being fluidly connected to the inlet side of the heat rejecting heat exchanger/gas cooler; and a refrigerating evaporator flowpath comprising in the direction of flow of the circulating refrigerant: a liquid pump having an inlet side, which is fluidly connected to the liquid outlet of the receiver, and an outlet side; at least one refrigeration expansion device having an inlet side, which is fluidly connected to the outlet side of the liquid pump, and an outlet side; and at least one refrigeration evaporator fluidly connected between the outlet side of the at least one refrigeration expansion device and the secondary low pressure input port of the at least one ejector; a liquid pump having an inlet side, which is fluidly connected to the liquid outlet of the receiver, and an outlet side; at least one refrigeration expansion device having an inlet side, which is fluidly connected to the outlet side of the liquid pump, and an outlet side; and at least one refrigeration evaporator fluidly connected between the outlet side of the at least one refrigeration expansion device and the secondary low pressure input port of the at least one ejector; wherein the liquid pump is located outside the receiver and/or the liquid pump comprises a bypass-line including a switchable bypass valve allowing refrigerant to selectively bypass the liquid pump by opening the switchable bypass valve.