HHD1B Series motor protectors provide digital motor protection for circuits that need current monitoring, fault memory and broad current coverage. The series uses LED cyclic display of three-phase current and supports optional communication or analog transmission for system integration.
Common Parameters
| Working Power Supply | AC220V, AC380V, 50Hz |
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| Protection Functions | Phase failure, three-phase imbalance, overload, locked rotor, start-up avoidance, short circuit, overvoltage, undervoltage, underload, grounding with special zero-sequence transformer |
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| Display Mode | LED cyclic display of three-phase current, fault memory status and fault query |
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| Display Accuracy | Class 2.0 |
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| Setting Mode | Button setting |
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| Contact Form | One NO contact group and one NC contact group, independent outputs |
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| Contact Capacity | 3A AC380V resistive load |
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| Optional Functions | RS-485 communication interface, 4-20mA transmission output |
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HHD1B-1
| Current Range | 2A to 100A |
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| Dimensions | 100 × 66 × 156mm |
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| Installation Method | Panel/device mounting and DIN rail compatible |
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HHD1B-2
| Current Range | 40A to 200A |
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| Dimensions | 120 × 62.5 × 168.5mm |
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| Installation Method | Panel/device mounting and DIN rail compatible |
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HHD1B-3
| Current Range | 80A to 400A |
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| Dimensions | 100 × 66 × 156mm |
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| Transformer Requirement | Requires additional current transformer |
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HHD1B-4
| Current Range | 160A to 800A |
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| Dimensions | 100 × 66 × 156mm |
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| Transformer Requirement | Requires additional current transformer |
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