Abstract: A method of improved reduced energy let through (RELT) mode selection in a switching apparatus includes receiving a request to disable a RELT mode of the switching apparatus, and, if the RELT mode of the switching apparatus is active, increasing a current threshold of the switching apparatus after a configurable amount of time has elapsed from the receipt of the request to disable the RELT mode.

Abstract: An electronic control for a circuit breaker with automatic breaker rating is disclosed. The electronic control includes a memory to store circuit breaker ratings, a breaker rating switch to select circuit breaker ratings, and a microprocessor operatively coupled to the breaker rating switch and the memory. The microprocessor is configured to interpret a selected circuit breaker rating of the breaker rating switch, set an amplifier gain adjustment for the circuit breaker based on the selected circuit breaker rating, and transmit the selected circuit breaker rating to the memory for storage in the memory.

Abstract: A rating plug for an electronic trip unit is disclosed. The rating plug has a housing with a plurality of switches disposed within the housing, each of the switches positionable in one of two positions. The settings of the switches establish a digital signature associated with the rating plug, providing for a universal rating plug that can be used on any circuit breaker that is accepting of the rating plug and that has a sensor value equal to or greater than the rating plug current rating. For instance, a rating plug having a 1000 Amp rating can be used on any circuit breaker sensor for use at or above 1000 A.

Abstract: A system for controlling power in a circuit breaker trip unit is disclosed. The system includes: a user interface operably coupled to the trip unit and having a plurality of input keys; a power conditioner operably coupled to the user interface and operably coupled to a battery power source and an external power source; and a power control circuit. The power control circuit is configured to automatically electrically connect the battery power source to the power conditioner in response to activation of any of the plurality of input keys, and in the absence of an electrical connection between the external power source and the power conditioner.

Abstract: A method of improved reduced energy let through (RELT) mode selection in a switching apparatus includes receiving a request to disable a RELT mode of the switching apparatus, and, if the RELT mode of the switching apparatus is active, increasing a current threshold of the switching apparatus after a configurable amount of time has elapsed from the receipt of the request to disable the RELT mode.

Abstract: An electronic trip unit for a circuit breaker, the electronic trip unit includes a rating plug having a plurality of switches each configured to indicate a specified current rating for the rating plug and for selectively supplying a current rating for the electronic trip unit, a processing unit which receives and reads a value of the selected current rating from the rating plug upon power-up, and a gain control unit including a plurality of gain circuits. Each of the gain circuits including a plurality of gain switches set by the processing unit based upon the selected current rating, to control a gain of input current of the electronic trip unit.

Abstract: A system for controlling power in a circuit breaker trip unit is disclosed. The system includes: a user interface operably coupled to the trip unit and having a plurality of input keys; a power conditioner operably coupled to the user interface and operably coupled to a battery power source and an external power source; and a power control circuit. The power control circuit is configured to automatically electrically connect the battery power source to the power conditioner in response to activation of any of the plurality of input keys, and in the absence of an electrical connection between the external power source and the power conditioner.

Abstract: The present disclosure describes a system for measuring current amplitude in a conductor, comprising at least one Rogowski coil, an integration circuit directly connected to the at least one Rogowski coil, a microprocessor circuit in communication with the integration circuit and configured to receive output from the integration circuit and to calculate energy data comprising current amplitude in the conductor. A method for measuring current in a conductor is also presented.

Abstract: An electronic control for a circuit breaker with automatic breaker rating is disclosed. The electronic control includes a memory to store circuit breaker ratings, a breaker rating switch to select circuit breaker ratings, and a microprocessor operatively coupled to the breaker rating switch and the memory. The microprocessor is configured to interpret a selected circuit breaker rating of the breaker rating switch, set an amplifier gain adjustment for the circuit breaker based on the selected circuit breaker rating, and transmit the selected circuit breaker rating to the memory for storage in the memory.

Abstract: A rating plug for an electronic trip unit is disclosed. The rating plug has a housing with a plurality of switches disposed within the housing, each of the switches positionable in one of two positions. The settings of the switches establish a digital signature associated with the rating plug, providing for a universal rating plug that can be used on any circuit breaker that is accepting of the rating plug and that has a sensor value equal to or greater than the rating plug current rating. For instance, a rating plug having a 1000 Amp rating can be used on any circuit breaker sensor for use at or above 1000 A.

Abstract: A rating plug that, in addition to setting the percentage de-rating on the voltage conditioning (i.e., gain/filter) circuit, by controlling the operational amplifier gain with analog switches in series with the opamp feedback loop, provides breaker frame and/or sensor information to a microprocessor.

Abstract: A remote operation management system for commercial appliances is provided. The system includes a user interface for authorizing use of an appliance and a dedicated appliance controller coupled to the user interface and the appliance for controlling operation of the appliance. An appliance communication controller is coupled to the user interface over an appliance communication connection, and an external host controller is coupled to the appliance communication controller over a host communication connection. The external host controller is configured to communicate a message for the appliance to the appliance communication controller. A remote management system is coupled to the external host controller and configured to control a function of the appliance.

Abstract: A remote operation management system for commercial appliances is provided. The system includes a user interface for authorizing use of an appliance and a dedicated appliance controller coupled to the user interface and the appliance for controlling operation of the appliance. An appliance communication controller is coupled to the user interface over an appliance communication connection, and an external host controller is coupled to the appliance communication controller over a host communication connection. The external host controller is configured to communicate a message for the appliance to the appliance communication controller. A remote management system is coupled to the external host controller and configured to control a function of the appliance.