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3MP protector consists of a metal casing with terminals, bimetal disc temperature sensors, welding pads, moving contacts, insulation paper, stationary contacts, S-shaped heating wires, and a base plate. Under the action of current, the S-shaped electric heating wire generates heat, which drives the bimetal disc sensing plate to act, making the bimetal disc exhibit high thermal sensitivity and current sensitivity, especially when the motor is locked, it can quickly shut down the power.3MP is widely used in washing machines, dishwashers, vacuum cleaners, high speed blender, juicers, meat grinders, etc. The sensitive current characteristics of 3MP allow the position of the motor protector to be moved outside the winding, providing motor manufacturers with flexibility in installation space design.
The 3MP-P protector is equipped with a PTC thermistor with a resistance of over 1K ohms on the outer shell of the 3MP protector. One side of PTC is in effective contact with the outer shell through a steel card, and the other side is in conductive contact with the bottom plate through a steel card. Connect the PTC and 3MP contacts in parallel. When the protector is disconnected under the action of temperature and current, the PTC is energized to generate heat, and its heat is transferred to the bimetal disc through the housing, keeping the bimetal disc in a disconnected state. Only when the power is cut off and the PTC is powered off without heating or cooling, can the protector be reset, achieving manual reset function. This protector is widely used in vacuum cleaners, garden tools, high speed blender, juicers, meat grinders, etc.
Just provide us with specific current and temperature rise parameters, installation conditions, etc., and we will choose a matching 3MP motor protector and provide you with samples. As a leader in the protector industry, Changsheng Electric has a complete motor selection laboratory. There are dedicated personnel working with customers to conduct selection tests, develop the best solutions, and provide low-cost protectors at the fastest speed to enhance customers' competitive advantage.
Provide corresponding insulation sleeves according to customer usage needs 相关阅读

UL TUV CQC

AC 250V 8A 10000cycles
AC250V 28A 500cycles
AC250V 18.5A 1500cycles
AC125V 18.5A 5000cycles

Open temperature 60- 170°C one gear every 5℃. tolerance ±5℃
First action time at 25°C: 4-10 seconds or as per customer requirements