P&H
Overload relay for P&H equipment
This overload relay is designed for P&H equipment to protect high-speed motors with a 7.2 Ampere limit. It monitors electrical current to prevent damage from excessive load conditions.
Specifications
- Part number
- MN40-15-011
- Brand
- P&H
The MN40-15-011 overload relay functions as an electrical protection device for high-speed motors within P&H machinery. It detects and reacts to excessive current flow that could lead to overheating and permanent motor damage. By monitoring the electrical input, the device disconnects the motor from the power supply when the current exceeds the defined safety threshold, preventing potential failures caused by mechanical strain or system faults.
This specific relay is calibrated for a maximum current of 7.2 Amperes. It is intended for use in various P&H systems, including bridge cranes, gantry cranes, and mining shovels, where it safeguards motors used in hoisting, travel, or slewing mechanisms. The relay ensures that motors operating within these high-speed applications remain protected against conditions that would otherwise compromise their operational integrity.
Overload relays generally operate by using thermal or magnetic principles to sense current levels. When current exceeds the set limit, the internal mechanism triggers to open the circuit, effectively isolating the motor from the power source. This action is essential for maintaining the electrical safety of the machine and preventing the risks associated with sustained overcurrent, such as motor burnout or fire hazards in industrial environments.