摘要:
An electrical switching apparatus includes a body and a display apparatus. The body has a housing, a handle partially extending through the housing, separable contacts located within the housing, an operating mechanism structured to open and close the separable contacts, a main printed circuit board located within the housing, and a number of electrical rating settings associated with the main printed circuit board. Each of the number of electrical rating settings has a magnitude. The display apparatus is electrically connected to the main printed circuit board and is structured to display the magnitude of at least one of the number of electrical rating settings.
摘要:
An interface assembly is for an electrical switching apparatus. The electrical switching apparatus includes a housing, a first handle partially extending through the housing, separable contacts located within the housing, an operating mechanism to open and close the separable contacts, a main printed circuit board located within the housing, and a number of electrical rating settings associated with the main printed circuit board. Each of the electrical rating settings has a magnitude. The interface assembly includes: a base assembly comprising a base, the base being disposed on the housing, the base having a mounting surface; and a second handle coupled to the mounting surface, the second handle and the first handle being structured to drive each other. The mounting surface has at least one port. The magnitude of a corresponding one of the electrical rating settings is visible through the at least one port.
摘要:
An autotrip plunger of a circuit breaker is disclosed for opening contacts of the circuit breaker to install and uninstall the circuit breaker from a current source. In an embodiment, the autotrip plunger includes a compression spring, a first body section and a second body section, the first body section including a contact surface for contacting a tripping element of the circuit breaker and the second body section including an arbor shaft for fitting in the compression spring. At the free end of the arbor shaft, the arbor shaft includes at least one radial protrusion for holding the compression spring. A circuit breaker with such an autotrip plunger is also disclosed.
摘要:
A circuit breaker (10, 12) includes a sensing circuit (48, 50, 52), a control circuit (46), an actuator (42), an operating mechanism, and an interlock mechanism (70, 94). The sensing circuit (48, 50, 52) is configured to generate the sense signal representative of a power signal flowing through a power circuit (54, 56, 58). The control circuit (46) has a frame (74, 76) and is configured to receive the sense signal and to provide a trip signal on a first terminal (68). The actuator (42) is external to the control circuit frame (74, 76) and has a second terminal (98) coupleable to the first terminal (68). The actuator (42) is configured to receive the trip signal on the second terminal (98). The operating mechanism is coupled to the actuator (42) and is configured to open and close the power circuit in response to actuation of a lever (36). The actuator (42) is configured to actuate the lever (36), in response to the trip signal. The interlock mechanism (70, 94) is coupled to at least one of the actuator (42) and the operating mechanism and is configured to actuate the lever (36) when the first terminal (68) is not coupled to the second terminal (98).
摘要:
The present invention relates to a set of electrical units for controlling power units, comprising a contactor breaker (CD) with a plurality of current-breaking poles actuated by a solenoid (E) and by a control and slipping mechanism (D, S) on the one hand, and by an auxiliary module (MS) plugged on the power outputs of the contactor breaker and connected by control links to the latter on the other hand, characterized by the fact that it includes a control connection block (R) provided with control connectors (G) which connect to control outputs (A1, A2, 21, 22, 14, 13) of the contactor breaker onto which a control terminal (Ba) may be connected alternatively and with control connectors (J) which connect to control outputs (S1, S2, S3, 82, 84, 81) of the auxiliary module (MS) onto which a control terminal (Bs) may be connected alternatively, with electrical links connecting said control connectors (G, J).
摘要:
An organo-platinum complex of the formula ##STR1## wherein X and Y have the same meaning of a halogen, oxyanion or carboxylate, respectively or X is an oxyanion or dicarboxylate together with Y, and L.sub.1 and L.sub.2 are bonded together to form one of silicon containing diamine compounds selected from the group consisting of ##STR2## in which R.sub.1, R.sub.2 and R.sub.3 are a lower alkyl or phenyl, respectively, and n is an integer of 0 or 1,and use of the complex for an anti-tumor composition.
摘要:
A molded case multi-pole circuit breaker is provided with a solid state trip unit having removable and replaceable rating plug. A mechanical interlock trips the circuit breaker when a cover portion thereof is opened. This cover portion must be opened to gain access to the rating plug. A mechanical lockout device is actuated when rating plug is removed to maintain the breaker tripped and to prevent resetting thereof until a rating plug is reinserted in the trip unit.
摘要:
A static trip, molded case circuit breaker includes an operating mechanism having powerful mechanism springs to achieve the requisite contact pressures for high current carrying capacity. A rotary handle resets the operating mechanism via a reciprocating slide and a latching mechanism, while loading the mechanism springs. Return of the handle to its original position achieves rapid closure of the circuit breaker contacts. The latching mechanism is equipped with a trip interlock operating to trip the circuit breaker in response to removal of the case cover and to thereafter disable resetting of the operating mechanism in the absence of the cover and/or electronic trip unit.