Products

Automatic Change over Switch is a power switching device that is capable of automatically switching loads to a backup power source when a fault or abnormality in the main power source is detected to ensure the continuity and reliability of power supply. This type of switch is often used in applications that require high reliability and continuous power supply, such as data centers, hospitals, airports, and other important facilities.

SONTUOEC is a supplier and wholesaler of HL30-100 Isolator Switch with competitive quality and price in China.

Magnetic Starter(DOL)the motor, i.e., a magnetic switch is utilized to control the starting and stopping of the motor (or motors). Magnetic switches play a key role here by controlling the on-off of the circuit according to changes in the external magnetic field, thus realizing the control of the motor.

LE1 Series Magnetic Starter is a kind of electronic device based on the magnetic field principle, which realizes the on-off control of the air compressor circuit through the combination of magnetic sensing element and trigger device. When an external magnetic field is close by, the magnetic sensing element will be affected, thus triggering the switch action to close or break the circuit, and then control the start and stop of the air compressor.

STH-40 series thermal overload relay is suitable for the circuit of ac 50/60 Hz,rated operational voltage up to 660V. And it can realize the function of overload and phase-failure protection for AC motor. This product conforms to GB14048.4,IEC60947-4-1 Standard.

STR2-D33 Thermal overload relays work on the principle of the thermal effect of electric current. When a motor is overloaded, its current increases, causing the heating element inside the thermal overload relay to heat up. This heat is transferred to the bimetal, which is made of two metals with different coefficients of thermal expansion, so it bends when heated. When the bending reaches a certain point, it triggers a mechanical device, usually a contact, which disconnects the power supply to the motor, thus protecting it from damage.