Abstract: An electrical power distribution system includes a main disconnect unit and a surge protector unit. The main disconnect unit includes an electrical power bus having a three-phase power bus and a neutral bus. The separable contacts of a circuit breaker are employed for interrupting current flowing in the three-phase power bus. The surge protector unit includes an electrical power bus having a corresponding three-phase power bus and a neutral bus. Three phase-to-neutral surge protectors are employed for protecting downstream loads from surges or transients on the power buses. The electrical power bus of the surge protector unit electrically engages the electrical power bus of the disconnect unit to form a series electrical connection of the electrical power buses for the loads.

Abstract: An electromagnetic relay and method of fabrication, in accordance with the present invention, include a base defining a bottom plane, a motor assembly mounted on the base, the motor assembly including a bobbin, a core with at least one winding about the core and an electrical component for electrically coupling to the at least one winding, the electrical component having leads configured to relieve stress in the at least one winding at coupling portions to the at least one winding. An armature is supported to be movable about a predetermined point for movement between two contact operating positions. At least one contact assembly for selectively providing one of an open and closed circuit is included. At least one terminal member is mounted on the base having a distal end for electrically connecting an end of the winding with a source of energy, and a proximal end is formed by at least one depending leg to define a slot for receiving at least one lead of the electrical component.

Abstract: An electromagnetic relay includes a winding, a magnetic core disposed within the winding, and an armature mounted for movement at a first end of the winding. At least one movable circuit contact is operably associated with the armature and movable with respect to at least one stationary contact mounted in the relay responsive to motion of the armature. An end plate is mounted at an opposing end of the winding and an insulating sheet is folded about a portion of the winding. The insulating sheet has first and second sides, with the first side being secured on one end to the end plate, and the second end disposed between the armature and the first end of the winding. An outer frame covers at least a portion of the insulating sheet. The insulating sheet functions to reduce the occurrence of voltage breakdown within the relay.

Abstract: There is provided structure and methods for use in adjusting certain design parameters of a relay during initial assembly of the relay. The structure includes an adjustment member insertable between a bobbin and a core. The adjustment member is preferably U-shaped having arms straddling the core and a backspan which acts as a stop to define the travel of an armature. A method of initially adjusting the relay includes inserting the adjustment member between the bobbin and the core and moving the armature into engagement with the backspan. The adjustment member is driven between the bobbin and core and permanently fixed in place when the desired parameters have been attained. An alternative method includes providing a relay having a motor assembly, including a bobbin and core, which may be moved about a pivot point in the relay. The armature is forced against the motor assembly until the desired design parameters are obtained and the motor assembly is then permanently fixed in place within the relay.

Abstract: There is provided structure for use in adjusting certain design parameters of a relay during initial assembly of the relay. The structure includes an adjustment member insertable between a bobbin and a core. The adjustment member is preferably U-shaped having arms straddling the core and a backspan which acts as a stop to define the travel of an armature. The adjustment member is driven between the bobbin and core and permanently fixed in place when the desired parameters have been attained. The armature is forced against the motor assembly until the desired design parameters are obtained and the motor assembly is then permanently fixed in place within the relay. An armature is forced against the core moving it within the bore of the bobbin until the desired parameters have been obtained. Thereafter, the core is permanently fixed in position within the bore of the bobbin.

Abstract: An electromagnetic relay includes a winding, a magnetic core disposed within the winding, and an armature mounted for movement at a first end of the winding. At least one movable circuit contact is operably associated with the armature and movable with respect to at least one stationary contact mounted in the relay responsive to motion of the armature. An end plate is mounted at an opposing end of the winding and an insulating sheet is folded about a portion of the winding. The insulating sheet has first and second sides, with the first side being secured on one end to the end plate, and the second end disposed between the armature and the first end of the winding. An outer frame covers at least a portion of the insulating sheet. The insulating sheet functions to reduce the occurrence of voltage breakdown within the relay.