Product characteristics:
| Specification | BR-25GR 150 3P | BR-25GR 275 3P | BR-25GR 320 3P | |
| SPD classification according to EN61643-11 | Type 1 + Type 2 | Type 1 + Type 2 | Type 1 + Type 2 | |
| SPD classification according to IEC61643-11 | Class I + Class II | Class I + Class II | Class I + Class II | |
| Nominal operating voltage | Un | 120V/240V(50/60Hz) | 230V/400V(50/60Hz) | 250V/440V(50/60Hz) |
| Max. continuous operating a.c. voltage | Uc | 150V(50/60Hz) | 275V(50/60Hz) | 320V(50/60Hz) |
| Lightning impulse current (10/350μs) | Iimp | 25kA | 25kA | 25kA |
| Nominal discharge current (8/20μs) | In | 25kA | 25kA | 25kA |
| Max. discharge current (8/20μs) | Imax | 100kA | 100kA | 100kA |
| Quantity of electric charge | Q | 12.5As | 12.5As | 12.5As |
| Specific energy | W/R | 156kJ/Ω | 156kJ/Ω | 156kJ/Ω |
| Voltage protection level | Up | ≤2.3kV | ≤2.3kV | ≤2.3kV |
| Short-circuit current rating a.c. | Isccr | 25kA rms | 25kA rms | 25kA rms |
| Max. backup fuse | 315A gG | 315A gG | 315A gG | |
| Temporary overvoltage TOV-withstand | UT | 250V/120min. | 440V/120min. | 550V/120min. |
| Response time | tA | ≤100ns | ≤100ns | ≤100ns |
| Operating temperature range | Tu | -40℃-80℃ | -40℃-80℃ | -40℃-80℃ |
| Cross-section area (Min.) | 4mm² | 4mm² | 4mm² | |
| Cross-section area (Max.) | 35mm² | 35mm² | 35mm² | |
| For mounting on | 35mm Din rail | |||
| Enclosure material | Thermoplastic UL94-V0 | |||
| Degree of protection | IP20 | IP20 | IP20 | |
| Order Code | B17122 | B17135 | B17148 | |
| Order Code (With remote signaling) | B17123 | B17136 | B17149 | |
Features:
Indicating window.
Designed according to IEC 61643-11.
A protective device that prevents lightning overvoltage and transient overcurrent from intruding into the power supply line from disrupting the normal operation of the power supply system and electrical equipment.
High performance varistor with thermal disconnection tripping device
Three-phase AC power surge arrester
Protection class: Type 1,Class I
Parallel surge protection device
Surge areeare used to guard sensitive equipments from voltage spike.
With high lightning current discharge capacity
Impact discharge current of single module reaches 25kA(10/350)
The Type 1 arresters combine high performance and user-friendliness in a single device. Their electrical parameters were rated for the most stringent requirements within lightning and surge protection systems.
Imax: 100KA(8/20)
Application:
• It is applicable to lightning protection for the power system in areas with high lightning risk (LPZ0B or the interface between LPZ0B and LPZ1).
• Suitable for three-phase TN-C power supply systems with AC of 50 to 60Hz
• Mainly used for TN-C power supply system (B) level overvoltage protection
• Generally installed in the building into the low-voltage main distribution cabinet or low-voltage main switch.
Installation:
It is installed in parallel in the main distribution inlet panel at the low-voltage entry end of transformer, the distribution box with overhead input in the building, the outdoor distribution cabinet/distribution box and other positions.
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