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Zhongzi ZZM3-20 Three-Phase Power Supply Surge Protection Device (SPD) for AC distribution systems rated at 220V/380V.
Zhongzi ZZM3-20 Three-Phase Power Supply Surge Protection Device (SPD) for AC distribution systems rated at 220V/380V. Provides transient overvoltage ...
Zhongzi ZZM3-20 Three-Phase Power Supply Surge Protection Device (SPD) for AC distribution systems rated at 220V/380V. Provides transient overvoltage protection with a nominal discharge current of 10kA and maximum discharge current of 20kA (8/20μs waveform). Features a built-in thermal release, plug-in replaceable modules, DIN rail mounting, status indicator window, and dry-contact remote signal terminals for monitoring.
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SKU:
ZZM3-20
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Product Details
Zhongzi ZZM3-20 Three-Phase Power Supply Surge Protection Device (SPD) for AC distribution systems rated at 220V/380V. Provides transient overvoltage protection with a nominal discharge current of 10kA and maximum discharge current of 20kA (8/20μs waveform). Features a built-in thermal release, plug-in replaceable modules, DIN rail mounting, status indicator window, and dry-contact remote signal terminals for monitoring.
| Manufacturer | Dahua |
|---|---|
| Degree Of Protection | IP20 |
| Dimensions Single Module Mm | 90 × 18 × 65 |
| Installation Location | LPZ0B-1 lightning protection zone or distribution cabinet |
| Installation Method | Parallel connection |
| Installation Width | 2–4 standard modules |
| Maximum Continuous Operating Voltage Uc | 385V (per primary datasheet) |
| Maximum Discharge Current Imax | 20kA (8/20μs) |
| Mounting | 35mm DIN rail |
| Nominal Discharge Current In | 10kA (8/20μs) |
| Nominal Operating Voltage Un | 220V (per primary datasheet) |
| Overheat Overcurrent Protection | Built-in thermal release |
| Rated Operating Frequency | 50Hz / 60Hz |
| Recommended Backup Circuit Breaker | 16A |
| Remote Signal Terminals | Dry contact; NC: pins 2-3, NO: pins 1-2; DC Un≤125V, In≤3A; AC Un≤250V, In≤0.5A |
| Response Time | ≤25ns |
| Shell Flammability Rating | UL94-V0 |
| System Compatibility | Three-phase AC 220V/380V distribution systems |
| Temperature Range | -40°C to +70°C |
| Voltage Protection Level Up | ≤1.6kV (per primary datasheet) |
| Wiring Ground Line | 10mm² copper |
| Wiring Phase Line | 6mm² copper |
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