Abstract: A terminal block assembly configured to prevent inadvertent contact with captivated electrical terminals while providing access to the terminals. The terminal block is formed from complementary insulating parts which collectively define permanently enclosed sections in which the terminals are disposed.

Abstract: A terminal block assembly configured to prevent inadvertent contact with terminals in sections of the block defined by pairs of barriers. Hinged covers are integrally molded with the barriers to enable closing of open sides of respective sections.

Abstract: A protective lampholder for a bayonet base lamp includes an insulating cup interposed between the base of the lamp and contacts provided in the lampholder for supplying power to the lamp. The cup covers the contacts when the lamp is removed, but exposes them when the lamp is inserted and rotated to an operating position.

Abstract: A sectional terminal block assembly has identical interlocking sections held together by the electrical elements. Each section has a projecting portion, and a recess portion shaped to receive the projecting portion of an adjoining section, the projecting and recess portions having interlocking shapes to prevent transverse motion or twist. Each contact element has an arm locked in aligned transverse slots in the projecting and recess portions to prevent relative motion longitudinally. A simple plastic cover snaps over the top of barriers between adjacent contact elements, and is pivotal upward from either side to allow access to the contacts.