Abstract: A disclosed electrical contactor may include a line-side electrical terminal adapted for connection to an electrical conductor carrying an electrical voltage, multiple load-side connectors each having a housing and multiple electrical terminals arranged within a cavity of the housing, a switching element, and a control unit. Each of the load-side connectors is adapted to receive a plug connector. The switching element electrically connects the line-side electrical terminal to electrical terminal(s) of at least one of the load-side connectors when enabled. The control unit enables the switching element in response to a control signal. Each of the load devices may have a plug connector, and each of the load-side connectors may be mechanically coded to receive the plug connector of a corresponding load device. An electrical configuration of electrical terminals of a line-side connector may allow a crankcase heater, or a crankcase heater with thermostat, to receive electrical power.

Abstract: A disclosed electrical relay may include a line electrical terminal adapted for connection to an electrical conductor carrying an electrical voltage, a normally-closed connector and a normally-open connector each having a housing and multiple electrical terminals arranged within a cavity of the housing, and a switching element. The switching element is configured to electrically connect the line electrical terminal to at least one of the electrical terminals of the normally-closed connector when not enabled, and to electrically connect the line electrical terminal to at least one of the electrical terminals of the normally-open connector when enabled. The normally-closed connector and the normally-open connector may be tab header connectors, and may be adapted to receive plug connectors of different devices.

Abstract: A disclosed control signal routing apparatus includes a substrate, a routing connector having multiple electrical terminals and multiple portions, and multiple electrical conductors on or in the substrate. The terminals are arranged within a housing cavity. The conductors connect terminals of different portions of the routing connector. Each portion of the routing connector is adapted to receive a plug connector and includes two or more terminals. Another embodiment of the apparatus includes the substrate, multiple routing connectors, and a first and second set of conductor(s) on or in the substrate. Each routing connector includes a first, a second, and a third terminals, and two portions each adapted to receive a plug connector. The first set of conductor(s) connects the first terminals of routing connectors and sequential next routing connectors. The second set of conductor(s) connects third terminals of routing connectors to second terminals of sequential next routing connectors.

Abstract: A disclosed control signal routing apparatus includes a substrate, a routing connector having multiple electrical terminals and multiple portions, and multiple electrical conductors on or in the substrate. The terminals are arranged within a housing cavity. The conductors connect terminals of different portions of the routing connector. Each portion of the routing connector is adapted to receive a plug connector and includes two or more terminals. Another embodiment of the apparatus includes the substrate, multiple routing connectors, and a first and second set of conductor(s) on or in the substrate. Each routing connector includes a first, a second, and a third terminals, and two portions each adapted to receive a plug connector. The first set of conductor(s) connects the first terminals of routing connectors and sequential next routing connectors. The second set of conductor(s) connects third terminals of routing connectors to second terminals of sequential next routing connectors.

Abstract: A disclosed electrical contactor may include a line-side electrical terminal, a load-side electrical terminal, a switching element coupled between the line-side and load-side electrical terminals, a control signal connector adapted for receiving and routing a control signal, and a control unit coupled between the control signal connector and the switching element and adapted to receive the control signal from the control signal connector and to enable the switching element in response to the control signal. The control signal connector may include a housing and multiple electrical terminals arranged within a cavity, and may include multiple portions each adapted to receive a plug connector. The switching element may be configured to electrically connect the line-side and load-side electrical terminals when enabled.

Abstract: A disclosed electrical contactor may include a line-side electrical terminal adapted for connection to an electrical conductor carrying an electrical voltage, multiple load-side connectors each having a housing and multiple electrical terminals arranged within a cavity of the housing, a switching element, and a control unit. Each of the load-side connectors is adapted to receive a plug connector. The switching element electrically connects the line-side electrical terminal to electrical terminal(s) of at least one of the load-side connectors when enabled. The control unit enables the switching element in response to a control signal. Each of the load devices may have a plug connector, and each of the load-side connectors may be mechanically coded to receive the plug connector of a corresponding load device. An electrical configuration of electrical terminals of a line-side connector may allow a crankcase heater, or a crankcase heater with thermostat, to receive electrical power.

Abstract: A disclosed electrical relay may include a line electrical terminal adapted for connection to an electrical conductor carrying an electrical voltage, a normally-closed connector and a normally-open connector each having a housing and multiple electrical terminals arranged within a cavity of the housing, and a switching element. The switching element is configured to electrically connect the line electrical terminal to at least one of the electrical terminals of the normally-closed connector when not enabled, and to electrically connect the line electrical terminal to at least one of the electrical terminals of the normally-open connector when enabled. The normally-closed connector and the normally-open connector may be tab header connectors, and may be adapted to receive plug connectors of different devices.