| Customization: | Available |
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| Task: | Adjust |
| Structure: | Combination |
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HHD11 series of phase failure, phase sequence, three-phase imbalance and over-undervoltage protection relays (hereinafter referred to as protection relays) are suitable for AC 50Hz, 380V power supply circuits and AC contactors and other switching electrical appliances to form motor control circuits. When the main circuit of the motor has abnormal conditions such as phase failure, phase mismatch, voltage imbalance, over-undervoltage, etc., the switch electrical appliance contacts are disconnected in time to disconnect the three-phase power supply of the motor, quickly and reliably protecting the motor.
The protection relay adopts voltage sampling mode, which is independent of the power size of the motor and does not require any current level setting and adjustment. The whole machine has the advantages of wide application range, simple and convenient use, stable and reliable performance, etc.
This series of protection relays meets the relevant requirements of GB/T 14048.4.
| Specification | HHD11-C; HHD11-D |
| Working power supply | Three phase AC380V 50Hz |
| Contact form | A set of normally open and normally closed contacts |
| Contact capacity | 3A AC250V (resistive) |
| Installation method | Device type or 35mm guide rail type |
| Dimensions | 24.5×85.5×90.5mm |
| Protection function | C: overvoltage, undervoltage, phase failure, phase sequence, voltage imbalance; D: Overvoltage (adjustable), undervoltage (adjustable), phase failure, phase sequence, voltage imbalance |
| Display mode | LED indicates working status |
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