📋 Basic Information
Application
Electrical Power System
Operation Voltage
Low Voltage
Certification
ISO9001, CCC, CE, CQC, RoHS
Max Discharge Current
100kA (8/20μs)
Test Standards
GB 18802.1; IEC 61643-1
Production Capacity
100K PCS/Month
🛡️ Product Description
The SPD (Surge Protective Device) is engineered to limit transient overvoltages of atmospheric origin and safely divert current waves to earth. This ensures the amplitude of overvoltage remains at a value that is not hazardous for electrical installations, electric switchgear, and controlgear.
| Parameter Item |
Symbol |
Specifications |
| Rated Voltage (Max. Continuous Voltage) |
Uc |
275V/385V |
| Nominal Discharge Current (8/20μs) |
In |
65kA |
| Max. Discharge Current (8/20μs) |
Imax |
100kA |
| Voltage Protection Level |
Up |
≤1.5kV |
| Response Time |
tA |
≤25ns (L-N) |
| Max. Backup Fuse |
- |
125AgL/gG |
| Operating Temperature Range |
Tu |
-40~80ºC |
| Cross-sectional Area (Solid/Flexible) |
- |
1.5mm²~25mm² / 35mm² |
| Mounting Type |
- |
35mm DIN Rail |
| Enclosure Material |
- |
UL94-V0 (Purple module & light gray) |
| Dimension |
- |
4 Modules |
📷 Detailed Photos
⚙️ Core Philosophy & Service
Quality Policy: We prioritize people-oriented, pragmatic, and innovative solutions, pursuing quality and serving the market with excellence. Our products are approved by TUV, CE, CQC, SGS, and ROHS, serving over 70 countries.
Service Commitment: We provide full-process support from equipment procurement and installation to commissioning and emergency maintenance. Our technical teams ensure project tasks are completed within specified time limits with high-level installation technology.
❓ Frequently Asked Questions
What is the primary function of this SPD?
It is designed to limit transient overvoltages caused by lightning or switching and safely divert the resulting current surges to the ground to protect electrical equipment.
What type of mounting does this device require?
The Bu1-65 model is designed for standard 35mm DIN rail mounting, making it compatible with most industrial and domestic distribution boards.
What is the significance of the 100kA rating?
The 100kA represents the Maximum Discharge Current (Imax), which is the peak current the SPD can safely handle once without failing under an 8/20μs pulse.
Is the enclosure fireproof?
Yes, the enclosure is made from UL94-V0 rated material, which is the highest standard for flame retardancy in plastics.
What standards does this product comply with?
This product is tested and certified according to GB 18802.1 and international standard IEC 61643-1.
What is the response time of the protector?
The response time (tA) is less than or equal to 25 nanoseconds for L-N protection, ensuring rapid action against sudden voltage spikes.
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