The electrical switch includes two fixed contacts and a rotatable knife contact having a rotational axis and including at least one longitudinal pair of blades flexibly connected to each other. The two fixed contacts as well as the blades in the rotatable knife contact are of a first electrically conductive material composition. The first and the second fixed contact includes a first contact pin and outer ends in the blades in the rotatable knife contact includes a second contact pin. The first contact pin and the second contact pin are of a second electrically material composition, which is different from the first material composition. The first contact pin and the second contact pin pass over each other during a switching event.

An electric switch comprising a mechanism module and a contact module, the contact module comprising a base element, a cover element, fixed contacts and a rotary roll for receiving moving contacts, the mechanism module comprising a base element, a cover element, a front pipeshaft for controlling the switch from front, an inner pipeshaft for controlling the switch from side end, the pipeshafts being engaged to each other by teeth to form a gear for transferring a moment from the front pipeshaft to the inner pipeshaft, a lever for transferring a moment to the roll, the lever arranged to receive the inner pipeshaft, the inner pipeshaft and the lever being rotatable engaged with each other, and main springs for giving a rotational moment for the lever and being connected of first ends to the base element and the mains springs being connected to the lever of their second ends.

A modular electrical switching device (1A) obtained by juxtaposing a control module (10) and a switching module (20), each comprising a mechanism that rotates about a rotation axis (A), coupled together by complementary coupling end pieces (11, 12; 21, 22). The control module (10) is designed to be controlled by a control rod (3) as well by a front control through a front entry opening (30) provided on the front side of the control module (10) as by left or right side control through two side entry openings (34, 35) provided on the sides of the control module (10), respecting a same direction of operation. The coupling end pieces (11, 12) of the control module (10) are provided on separated male (110) and female (120) coupling parts inserted between the modules (10, 20), when they are juxtaposed to form the switching device (1A).

A modular electrical switching device (1A) obtained by juxtaposing a control module (10) and a switching module (20), each comprising a mechanism that rotates about a rotation axis (A), coupled together by complementary coupling end pieces (11, 12; 21, 22). The control module (10) is designed to be controlled by a control rod (3) as well by a front control through a front entry opening (30) provided on the front side of the control module (10) as by left or right side control through two side entry openings (34, 35) provided on the sides of the control module (10), respecting a same direction of operation. The coupling end pieces (11, 12) of the control module (10) are provided on separated male (110) and female (120) coupling parts inserted between the modules (10, 20), when they are juxtaposed to form the switching device (1A).

Rotary switch (1, 101) comprising: a rotor (15, 115) supporting at least one electro-conductive rotary contact bridge (19, 119); a plurality of stationary contacts (21, 121); a housing (3, 103) accommodating the stationary contacts and the rotor. The housing comprises a plurality of sides (5, 105) extending between a top side and a bottom side. At least two of these sides (5, 105) are provided with access openings (62, 62) providing access to an associated stationary contact. These sides make an angle with each other. The housing may for example be rectangular.

Rotary switch (1, 101) comprising: a rotor (15, 115) supporting at least one electro-conductive rotary contact bridge (19, 119); a plurality of stationary contacts (21, 121); a housing (3, 103) accommodating the stationary contacts and the rotor. The housing comprises a plurality of sides (5, 105) extending between a top side and a bottom side. At least two of these sides (5, 105) are provided with access openings (62, 62) providing access to an associated stationary contact. These sides make an angle with each other. The housing may for example be rectangular.

A modular electrical switching device (1A) obtained by juxtaposing a control module (10) and a switching module (20), each comprising a mechanism that rotates about a rotation axis (A), coupled together by complementary coupling end pieces (11, 12; 21, 22). The control module (10) is designed to be controlled by a control rod (3) as well by a front control through a front entry opening (30) provided on the front side of the control module (10) as by left or right side control through two side entry openings (34, 35) provided on the sides of the control module (10), respecting a same direction of operation. The coupling end pieces (11, 12) of the control module (10) are provided on separated male (110) and female (120) coupling parts inserted between the modules (10, 20), when they are juxtaposed to form the switching device (1A).

A modular electrical switching device (1A) obtained by juxtaposing a control module (10) and a switching module (20), each comprising a mechanism that rotates about a rotation axis (A), coupled together by complementary coupling end pieces (11, 12; 21, 22). The control module (10) is designed to be controlled by a control rod (3) as well by a front control through a front entry opening (30) provided on the front side of the control module (10) as by left or right side control through two side entry openings (34, 35) provided on the sides of the control module (10), respecting a same direction of operation. The coupling end pieces (11, 12) of the control module (10) are provided on separated male (110) and female (120) coupling parts inserted between the modules (10, 20), when they are juxtaposed to form the switching device (1A).

A system includes a safety controller that, in operation, interrupts power to industrial automation devices or puts the system into a safe state upon command of a human operator. The system also includes an emergency stop switch circuit actuatable by a human operator and a human machine interface in data communication with the safety controller and the emergency stop switch circuit. The human machine interface includes integrated safety circuitry that, in operation, detects a change of state of the emergency stop switch circuit and provides a signal to the safety controller to interrupt power to the industrial automation devices or put the system into a safe state.

A system includes a safety controller that, in operation, interrupts power to industrial automation devices or puts the system into a safe state upon command of a human operator. The system also includes an emergency stop switch circuit actuatable by a human operator and a human machine interface in data communication with the safety controller and the emergency stop switch circuit. The human machine interface includes integrated safety circuitry that, in operation, detects a change of state of the emergency stop switch circuit and provides a signal to the safety controller to interrupt power to the industrial automation devices or put the system into a safe state.