HHD5 Series protection relays cover several supply-monitoring needs, from simple phase sequence checking to phase failure, voltage imbalance and over/under-voltage protection. The models differ by monitored supply type, protection functions, output form, dimensions and mounting method.
Common Parameters
| Contact Capacity | 3A AC250V resistive load for relay-output versions |
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| Installation Options | Screw mounting, panel mounting or 35mm DIN rail mounting depending on version and accessories |
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HHD5-A
| Working Power Supply | Three-phase AC380V, 50Hz |
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| Protection Function | Phase sequence protection |
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| Contact Form | One NO contact, or one set of NO and NC contacts by version |
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| Dimensions | 40.5 × 50.5 × 73mm |
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HHD5-C/E
| Working Power Supply | Three-phase AC380V, 50Hz |
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| Protection Functions | C: phase failure and phase sequence; E: phase failure, phase sequence and voltage imbalance |
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| Contact Form | One NO contact and one NC contact |
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| Dimensions | 45 × 82 × 106mm |
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| Alternative Products | XJ2, XJ3-G, XJ5 |
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HHD5-G
| Working Power Supply | Three-phase AC380V, 50Hz |
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| Protection Functions | Overvoltage, undervoltage, phase failure, phase sequence, voltage imbalance |
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| Display Mode | LED working status indication |
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| Contact Form | One set of NO and NC contacts |
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| Dimensions | 50 × 87.5 × 70mm |
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| Alternative Products | XJ11, ABJ1-18 |
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HHD5-II
| Working Power Supply | AC220V, 50Hz |
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| Protection Functions | Overvoltage and undervoltage protection |
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| Display Mode | LED working status indication |
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| Wiring Method | Top-in/bottom-out or bottom-in/top-out, specified when ordering |
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| Output Form | Voltage output |
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| Current Specifications | 32A, 40A, 60A |
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| Dimensions | 36 × 80 × 65.5mm |
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| Installation Method | 35mm DIN rail mounting |
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HHD5-II 3P+N
| Working Power Supply | Three-phase four-wire AC380V, 50Hz |
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| Protection Functions | Overvoltage and undervoltage protection |
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| Display Mode | LED working status indication |
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| Wiring Method | Top-in/bottom-out or bottom-in/top-out, specified when ordering |
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| Output Form | Voltage output |
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| Current Specifications | 60A, 80A, 100A |
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| Dimensions | 73 × 91.5 × 66mm |
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| Installation Method | 35mm DIN rail mounting |
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