1、Widely used in air compressors, electric motors, distribution boxes, water pumps, oil pumps, central air conditioning units, electric control boxes, power distribution cabinets, cranes, etc. 2、It is an indispensable protection product for the normal working voltage of the maintenance equipment in the operation of industrial equipment. 3、Installation method: The base of the protector adopts the rail type, and there are two M4 screw holes in the structure, which can be directly installed separately or installed on the HT35 rail. 4、Overvoltage protection: It means that the voltage of the protected line is higher than the set value, and the delay is 3~8S, and the recovery is 6~20VAC. 5、Undervoltage protection: It means that the voltage of the protected line is lower than the set value, the delay is 3~8S, and the recovery is 3~20VAC. Features: 1. Widely used in air compressors, electric motors, distribution boxes, water pumps, oil pumps, central air conditioning units, electric control boxes, power distribution cabinets, cranes, etc. 2. Such as central air conditioning compressor protection, power monitoring of various elevators, phase loss of pumps and oil pumps, reverse phase protection, etc. 4. Installation method: The base of the protector adopts the rail type, and there are two M4 screw holes in the structure, which can be directly installed separately or installed on the HT35 rail. 6. Phase loss protection: When the protected line is in the running state or non-operating state, any phase failure occurs, and the delay is 2S. 7. Reverse phase protection: A protection measure to prevent L1, L2, L3 three-phase AC phase sequence from being connected incorrectly, delay 2S action. Specification: Condition: 100% Brand New Item Type: Circuit Protection Relay Dimensions: Approx. 68 x 30 x 76mm / 2.7 x 1.2 x 3in Main Circuit: Connecting wires of the main circuit: The insulating copper wire has a carrying area of 1.0 to 2.5 mm. If a single strand of copper wire can be directly inserted into the terminal; if a cord is used, a needle type terminal must be added to the wire to ensure reliable connection. Auxiliary Circuit: 1) A normally open and a normally closed contact that is electrically inseparable. 2) Use Category: AC15, DC13 3) Contact Capacity: 250VAC 3A, 30VDC 1.5A Conventional Thermal Current: 5A Package List: 1 x Circuit Protection Relay 1 x Instruction Manual Note: 2. This product is generally sampled on the power side of the three-phase power supply and must not be installed on the output side of the variable frequency current.