An apparatus for securing an electronic component to a DIN rail including an electronic component, a latching system positioned on an end of the electronic component adapted for attachment to the DIN rail, wherein the latching system is made of a plastic material, wherein the DIN rail has a flat upper surface with two legs extending downwardly from, and perpendicular to, the flat upper surface, and a flange extends outwardly from each leg, wherein the latching system includes a recess, an upper surface above the recess having an angled slot positioned in the upper surface adapted to receive an upper flange of the DIN rail, and a lower surface below the recess adapted to have an end of a lower flange of the DIN rail positioned thereover.

To enable an intuitive and inexpensive releasable fastening of a housing to a fastening rail, a fastening apparatus is provided for the releasable fastening of the housing to the fastening rail, comprising a single-part lever mechanism for latching and unlatching the housing to and from the fastening rail, wherein the lever mechanism comprises an actuation means that moves the lever mechanism into a latching position or into an unlatching position; a first lever arm that actuates a first hook provided in the housing in a first direction; and a second lever arm that actuates a second hook provided in the housing in a second direction, and wherein the first and second directions are opposite one another and the first and second lever arms are connected to one another via the actuation means such that a support section is formed that has a parabola-like form having two parallel limbs.

A switching device having a housing, with a cover that can pivot about a rotational axis, and a securing device for carrier rail mounting. The cover has at least one coupling contact for an electrical and/or signal-type contact connection with at least one engageable switching device. A closing or releasing of the contact connection occurs with a pivoting of the cover. A locking or unlocking of the securing device occurs with a pivoting of the cover. The securing device has a spring-elastic clipping element shaped on the housing, for force-locking securing to a carrier rail end face, and has a sliding element, which is mounted such that it can slide in a linear manner within the housing and is coupled to the cover, for interlocking securing to the carrier rail end face opposite the clipping element.

An electronics module having a latch assembly including first and second reciprocating latch portions adapted to engage respective first and second opposite edges of a mounting rail. Each of the latch portions includes a locking tab, the locking tabs movable away from each other from a latched position to an unlatched position, the first and second latch portions being coupled together for reciprocating motion, at least one of said latch portions including an actuator portion extending from the housing for manual actuation of the latch assembly between the latch and unlatched positions.

An attachment structure for attaching a recess of a housing to a DIN rail includes first and second movable strips. The first movable strip extends continuously from an operable portion and being movable along a surface of the housing in a first direction toward the recess and in a second direction opposite from the first direction. A first claw of the first movable strip and a second claw of the second movable strip move toward the DIN rail in accordance with a movement of the first movable strip in the first direction and engage ledges of the DIN rail. A koma converts the movement of the first movable strip in the first or second direction to a movement of the second movable strip in a direction opposite from the movement direction of the first movable strip.

An attachment structure for attaching a recess of a housing to a DIN rail includes first and second movable strips. The first movable strip extends continuously from an operable portion and being movable along a surface of the housing in a first direction toward the recess and in a second direction opposite from the first direction. A first claw of the first movable strip and a second claw of the second movable strip move toward the DIN rail in accordance with a movement of the first movable strip in the first direction and engage ledges of the DIN rail. A koma converts the movement of the first movable strip in the first or second direction to a movement of the second movable strip in a direction opposite from the movement direction of the first movable strip.

A transformer position adjustment preventing device includes a case having a handle insertion unit formed therein, a position displaying unit disposed in the case and displaying a test position or an operation position of a transformer truck with a transformer seated thereon, a rotating member disposed in the case, connected to the position displaying unit, rotated by the rotation of the position displaying unit to open or close the handle insertion unit, and a restricting member rotated in a direction of the rotating member or an opposite direction of the rotating member according to opening or closing of a door opening and closing the transformer chamber in which the transformer truck is disposed, so as to restrict the rotation of the rotating member or release the restriction state.

An interlock system for a low, medium or high voltage switchgear includes: a compartment; a door; a door handle; and a circuit breaker. The door permits access to an inside of the compartment. The door handle opens and closes the door. The circuit breaker is located in the compartment. The door handle is movable from a closed position to an open position. When the door handle is in the closed position, the door does not to open, and when the door handle is in the open position, the door opens. A movement of the door handle from the closed position to the open position places the circuit breaker in a locked configuration. In the locked configuration the circuit breaker is not operable.