Self-protecting starters (SPSs) were first introduced to the U.S. in 1987. However, SPSs have been used internationally for several years. Recently, several manufacturers and private labelers have ...

The NEC defines a controller in a few different ways. In Art. 100, a controller is described as “a device or group of devices that serves to govern, in some predetermined manner, the electric power ...

Motor control centers (MCCs) were first introduced in 1937 as a way to conserve wall and/or floor space in industrial facilities. Before 1960, wall-mounted motor starters were used even if only a few ...

The Contactron solid-state reversing contactor from Phoenix Contact combines four functions in a module that’s just 22.5 mm wide (see the figure). Designed for three-phase ac motors up to 4 kW/5 HP in ...

You hop in your Dodge diesel and turn the key only to be greeted with a click-click sound, instead of the more familiar whirring of your starter motor. Something is wrong. You somehow knew that the ...

Motor Starter is a device which is connected in series with the motor to decrease its starting current and then increase it as motor starts rotating gradually. It is an electrically operated switch ...

The opening part of this series laid out how the starter motor works, set the thing in the context of its electrical supply and suggested a few eyes-and-ears checks as the first steps in ...