Station for forming thermoplastic containers, which comprises: - a unit for moulding containers, notably by blow-moulding preforms: - a first mould support and a second mould support which are each intended to support part of a mould, the mould supports (22, 24) being mounted with the ability to move one relative to the other between an open position in which they are parted from one another, and a closed position in which they meet; - a locking device for locking the mould supports (22, 24) in the closed position and which comprises at least one locking member mounted with the ability to move on the second mould support between a locked position in which it collaborates with at least a blocking face of the first mould support so as to prevent the opening of the mould supports (22, 24) and an unlocked position in which the locking member is retracted with respect to the blocking face so as to allow the opening of the mould supports (22, 24); - a bistable device which comprises: -- a fixed first element that is fixed with respect to the second mould support, -- a mobile second element which is mounted with the ability to move on the second mould support between two stable extreme positions (P1, P2) situated one on each side of an unstable equilibrium intermediate position, and which is connected in terms of movement to the locking member, the mobile element interacting with the fixed element to force the locking device towards its locked position or towards its unlocked position corresponding to each of its stable extreme positions (P1, P2); characterized in that the mobile element comprises a first magnetic dipole, referred to as the mobile magnetic dipole, and the fixed element comprises at least a second magnetic dipole, referred to as the fixed magnetic dipole, the fixed magnetic dipole applying a magnetic force (Fm) from a distance to the mobile magnetic dipole in order to force the mobile element towards one or other of the stable extreme positions (P1, P2) whatever its position between its two stable extreme positions (P1, P2). - a unit for moulding containers, notably by blow-moulding preforms: - a first mould support and a second mould support which are each intended to support part of a mould, the mould supports (22, 24) being mounted with the ability to move one relative to the other between an open position in which they are parted from one another, and a closed position in which they meet; - a locking device for locking the mould supports (22, 24) in the closed position and which comprises at least one locking member mounted with the ability to move on the second mould support between a locked position in which it collaborates with at least a blocking face of the first mould support so as to prevent the opening of the mould supports (22, 24) and an unlocked position in which the locking member is retracted with respect to the blocking face so as to allow the opening of the mould supports (22, 24); - a bistable device which comprises: -- a fixed first element that is fixed with respect to the second mould support, -- a mobile second element which is mounted with the ability to move on the second mould support between two stable extreme positions (P1, P2) situated one on each side of an unstable equilibrium intermediate position, and which is connected in terms of movement to the locking member, the mobile element interacting with the fixed element to force the locking device towards its locked position or towards its unlocked position corresponding to each of its stable extreme positions (P1, P2); -- a fixed first element that is fixed with respect to the second mould support, -- a mobile second element which is mounted with the ability to move on the second mould support between two stable extreme positions (P1, P2) situated one on each side of an unstable equilibrium intermediate position, and which is connected in terms of movement to the locking member, the mobile element interacting with the fixed element to force the locking device towards its locked position or towards its unlocked position corresponding to each of its stable extreme positions (P1, P2);