Abstract: A contactor for air conditioning unit includes a first magnetic coil, having a first set of contacts for the compressor; a second magnetic coil, having a second set of contacts for the fan motor; and a time delay device connected in series with either the first magnetic coil or the second magnetic coil. The contactor provides for independent control of the compressor and the fan motor. During the time period when the fan continues running and the compressor is switched off, the device equalizes the pressure difference between different portions of the air conditioning unit.

Abstract: A terminal block time delay relay includes a terminal block, a plurality of terminals, a first timing control, and a timing circuit. The terminal block defines a socket operable to receive an electrical relay. The plurality of terminals are accessible at edges of the terminal block. The first timing control is supported by the terminal block. The timing circuit is housed by the terminal block and coupled to the terminals, the first timing control, and the socket.

Abstract: An outdoor lighting control includes a photosensor responsive to ambient outdoor light and an alternating current relay with a pair of contacts movable between make and break positions. The relay includes a contact actuating arrangement that responds to the photosensor and alternating current bias the contacts into a make position and move the contacts electromagnetically into a break position. The contact actuating arrangement includes a coiled extension spring for moving the contacts into the make position and a resilient armature which biases the armature toward the break position. The spring and armature have respective resiliences sufficiently stiff and responsive to the alternating current to limit chatter in the contacts during passage from the make position to the break position to 15 milliseconds when the photosensitive means senses a transition between dark and daylight.