A modular electrical
distribution system (100, 200, 300), such as for powering an electrical conveyor, includes a conductor section (110, 210, 310), a movable cover (132, 350), a
branch coupler (112, 212, 312), and a power supply cord (126a, 320, 326). The conductor section (110, 210, 310) has a pair of opposing end connectors (122, 124; 142, 144; 224, 226; 250; 330, 332) that are compatible with one another so that two or more conductor sections can be attached end-to-end. The conductor section has an intermediate connector (130, 348) disposed between opposing end connectors for receiving a plug of the
branch coupler. A movable cover (132, 350) can be moved over the intermediate connector to prevent intrusion of contaminants and preclude access to live
electrical contacts. The plug can engage the intermediate connector when the cover is displaced away from the intermediate connector.