Abstract: A modular power distribution device for vehicles that couples to adjacent devices mechanically and electrically without a common housing or mounting plate. The devices share user selectable electrical connections internally to change the function of the devices and reduce the complexity of adding additional devices. The electrical contacts on the device are protected by a weather-resistant seal created when the device engages with wiring, adjacent devices or the provided covers. Covers may also house a communications receiver/transceiver and a microcontroller to control the device using wired or wireless communications. A mounting bracket is removably attached to each device and may be separated from the device without removing the mounting bracket from the vehicle. Each device can couple to a preceding device while the preceding device remains mounted to a substrate and connected to wiring. The devices may house semiconductor relays or electromechanical relays for use in direct current electrical systems.

Abstract: A modular power distribution device for vehicles that couples to adjacent devices mechanically and electrically without a common housing or mounting plate. The devices share user selectable electrical connections internally to change the function of the devices and reduce the complexity of adding additional devices. The electrical contacts on the device are protected by a weather-resistant seal created when the device engages with wiring, adjacent devices or the provided covers. Covers may also house a communications receiver/transceiver and a microcontroller to control the device using wired or wireless communications. A mounting bracket is removably attached to each device and may be separated from the device without removing the mounting bracket from the vehicle. Each device can couple to a preceding device while the preceding device remains mounted to a substrate and connected to wiring. The devices may house semiconductor relays or electromechanical relays for use in direct current electrical systems.