Thermal-mechanical flexible overload sensor

Patent metadata

Field	Value
Publication number	US-9460880-B2
Application number	US-201414553131-A
Country	US
Kind code	B2
Filing date	Nov 25, 2014
Priority date	Nov 25, 2014
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

An overload relay is provided for electrical equipment, such as a motor. The overload relay includes a set of electrical contacts, a trip mechanism and a single-arm, a set of monolithic compliant mechanism actuators. The trip mechanism has a normal position and a tripped position. The normal position allows electrical connection between the electrical contacts, and the tripped position interrupts electrical connection between the electrical contacts in response to detection of a high current condition. The single-arm actuator is formed of an electrically conductive material, and includes a compliant hinge and a single bar connected to the hinge. The single bar is electrically coupled to the line contact or the load contact. Under the high current condition, one of first and second ends of the single bar deflects relative to the compliant hinge to cause the trip mechanism to move into the tripped position.

First claim

The invention claimed is:

1. An overload relay for electrical equipment, the overload relay comprising:
a set of electrical contacts;
a trip mechanism having a normal position and a tripped position, the normal position allowing electrical connection between the set of electrical contacts, the tripped position interrupting electrical connection between the set of electrical contacts in response to detection of a high current condition in order to interrupt power to the electrica…

Assignees

• Schneider Electric Usa Inc

Inventors

• Melecio Ramirez Juan Ignacio
• Arcos Medina Waldo Jesus
• Rubio Barraza Gabriela Isabel

Classifications

• H01H61/063

  Electricity · mapped topic

• H01H61/04 Primary

  Electricity · mapped topic