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Product Specifications
Product Overview
DZ47SCB surge protective device backup protector is a dedicated backup protection device designed for SPD (Surge Protective Device) applications in low-voltage power supply systems.
When the SPD fails or enters an abnormal operating condition, DZ47SCB can quickly disconnect the fault current to protect electrical circuits and equipment, ensuring safe operation of the power system.
The product complies with NB/T 42150 "Special Protection Devices for Low-Voltage Surge Protective Devices" standard. It is suitable for AC 230V/400V low-voltage distribution systems and supports multiple pole configurations including 1P, 2P, 3P, and 4P.
Main Functions
- SPD backup protection
- Fault current disconnection protection
- Designed for use with surge protective devices
Product Features
- Dedicated backup protection for surge protective devices (SPD)
- Complies with NB/T 42150 standard
- Supports Class I (T1) and Class II (T2) test categories
- Multiple impulse current specifications available
- Multiple breaking capacity options
- DIN rail mounting installation
- Compact structure with easy installation
Applications
Suitable for:
- Low-voltage distribution systems
- Lightning protection systems
- SPD surge protection applications
- Industrial and commercial building electrical systems
Product Selection
| Parameter | Options |
|---|---|
| Product Series | DZ47SCB |
| Test Category | Class I (10/350μs), Class II (8/20μs) |
| Maximum Impulse Current (Iimp) | 15kA, 25kA |
| Maximum Discharge Current (Imax) | 20kA, 40kA, 65kA, 80kA, 120kA |
| Breaking Capacity | 65kA, 100kA |
| Number of Poles | 1P, 2P, 3P, 4P |
Electrical Characteristics
| Model | Test Category | Waveform | Maximum Impulse Current (Iimp) | Maximum Discharge Current (Imax) | Rated Short-Circuit Capacity (Icn) | Minimum Delayed Operating Current (Id) |
|---|---|---|---|---|---|---|
| DZ47SCB-15 | Class I (T1) | 10/350μs | 15kA | - | 65kA/100kA | 3A |
| DZ47SCB-25 | Class I (T1) | 10/350μs | 25kA | - | 65kA/100kA | 3A |
| DZ47SCB-20 | Class II (T2) | 8/20μs | - | 20kA | 65kA/100kA | 3A |
| DZ47SCB-40 | Class II (T2) | 8/20μs | - | 40kA | 65kA/100kA | 3A |
| DZ47SCB-65 | Class II (T2) | 8/20μs | - | 65kA | 65kA/100kA | 3A |
| DZ47SCB-80 | Class II (T2) | 8/20μs | - | 80kA | 65kA/100kA | 3A |
| DZ47SCB-120 | Class II (T2) | 8/20μs | - | 120kA | 65kA/100kA | 3A |
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