The electrical symbol analysis of the motor comprehensive protector is as follows:

1、 Standard symbol composition

‌Basic codeThe letter 'F' represents the protective device, which is a universal code in the national standard

‌Functional IdentificationThe suffix letter 'M' specifically refers to a motor, combined with 'FM'

Basic symbols‌：

Motor comprehensive protector is usually represented by 'MP' (Motor Protector)

Contactors are commonly represented by 'KM'

Relays are commonly represented by 'KA'

Thermal relays are commonly represented by 'FR'

The suffix of the motor comprehensive protector usually indicates different functional characteristics or model classifications:

‌Voltage level suffix‌：

'S': Operating voltage range of 24~240VAC/DC, suitable for various voltage demand scenarios

'W': Operating voltage range of 380~440VAC, suitable for high voltage environments

‌Functional characteristic suffix‌：

D ': with display function (Display)

'i': with communication function

'T': with terminal temperature protection function

'L': with leakage protection function

‌Protection type suffix‌：

O ': Overload protection

'U': Under voltage protection

'P': Phase loss protection

'B': 24V unbalance protection

‍The comprehensive protector for electric motors is a very important device that plays a crucial role in ensuring the safe operation of electric motors. During the identification and use of the motor comprehensive protector, it is necessary to pay attention to the correct use of symbols to ensure the correct use and safe operation of the equipment. Shanghai Hanshi Electric Warm Reminder; Welcome to consult Han Shi Electric at the same time; Our technology is at your service 24 hours a day

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