Abstract: A terminal block which can be coupled to another terminal block in an electrically connected state includes a housing, an input-side power supply terminal and an output-side power supply terminal. The housing includes a first wall portion and a second wall portion. The input-side power supply terminal and the output-side power supply terminal are arranged along the second wall portion inside the housing. The housing includes a protruding portion that functions as an obstructing member that hinders connection of the input-side power supply line to the input-side power supply terminal and a through hole that is arranged in a vicinity of the input-side power supply terminal of the second wall portion and penetrates the second wall portion in the first direction to allow insertion of the obstructing member.

Abstract: A temperature abnormality detection device includes a plurality of infrared temperature sensors respectively capable of detecting temperature in a different detection area of an equipment, and a device body including a temperature abnormality determination unit that determines that the temperature in the detection area detected by each of the plurality of infrared temperature sensors is abnormal when the temperature in the detection area is higher than a reference temperature. The plurality of infrared temperature sensors is connected to each other by crossover wiring.

Abstract: A terminal block which can be coupled to another terminal block in an electrically connected state includes a housing, an input-side power supply terminal and an output-side power supply terminal. The housing includes a first wall portion and a second wall portion. The input-side power supply terminal and the output-side power supply terminal are arranged along the second wall portion inside the housing. The housing includes a protruding portion that functions as an obstructing member that hinders connection of the input-side power supply line to the input-side power supply terminal and a through hole that is arranged in a vicinity of the input-side power supply terminal of the second wall portion and penetrates the second wall portion in the first direction to allow insertion of the obstructing member.

Abstract: A terminal block which can be coupled to another terminal block in an electrically connected state includes a housing, an input-side power supply terminal and an output-side power supply terminal. The housing includes a first wall portion and a second wall portion. The input-side power supply terminal and the output-side power supply terminal are arranged along the second wall portion inside the housing. The housing includes a protruding portion that functions as an obstructing member that hinders connection of the input-side power supply line to the input-side power supply terminal and a through hole that is arranged in a vicinity of the input-side power supply terminal of the second wall portion and penetrates the second wall portion in the first direction to allow insertion of the obstructing member.

Abstract: A push-button switch may include a housing, an operation unit, a lock lever unit, a transmission mechanism, a movement regulating portion, a contact mechanism, and a first biasing portion. The movement regulating portion enables movement of a lever body to a second position when an end of the operation unit on a housing portion side is positioned at an initial position, and disables movement of the lever body to the second position when the end of the operation unit on the housing portion side is positioned closer to an operation surface than the initial position in a movable direction. The first biasing portion biases the plunger from an operating position toward a return position.

Abstract: A push button switch may include a housing, an operation unit, and, a lock lever unit. A lever body of the lock lever unit may have a locking portion capable of locking one end of a long jig in an extending direction. The housing may have a fulcrum projection that contacts an intermediate portion of the jig having the one end locked to a locking portion when the lever body is moved using the jig, and serves as a rotation fulcrum of the jig.

Abstract: A push-button switch may include a housing, a plunger, an operation unit, a transmission mechanism, a contact mechanism, and a biasing portion. The plunger may have a first plunger that is disposed in series with the first plunger. The first plunger and the second plunger may be movable independently of each other. The contact mechanism may be configured to be opened/closed by movement of the second plunger.

Abstract: A push-button switch may include a housing, an operation unit, a lock lever unit, a transmission mechanism, a movement regulating portion, a contact mechanism, and a first biasing portion. The movement regulating portion enables movement of a lever body to a second position when an end of the operation unit on a housing portion side is positioned at an initial position, and disables movement of the lever body to the second position when the end of the operation unit on the housing portion side is positioned closer to an operation surface than the initial position in a movable direction. The first biasing portion biases the plunger from an operating position toward a return position.