What is a Surge Protective Device (SPD)?
A Surge Protective Device (SPD) is an essential electrical component designed to protect electrical equipment from damage caused by sudden voltage spikes, known as surges. These surges can result from
• Standard: IS0 8820-1, IS0 8820-8, JASO D622
• Rated voltage: DC750V
• Rated current: 12A, 16A, 20A, 25A, 30A, 40A, 50A,60A
• Breaking capacity: 5kA
• Protection object: Provide safer and more reliable protection against overload and short-circuit current faults of electric vehicle lithium battery pack, Super-capacitor circuit , charging circuit, DC-DC converter and other devices.
• Applicable environment: Temperature from -35℃to 85℃, humidity ≤90%.
• Material description: 95 alumina high strength ceramics and imported material fuse piece.
• Structure process: copper metal is riveted after welding process; The internal quartz sand is processed by solidification to prevent products from falling off in dynamic working conditions and prevent arc spraying which is caused by line faults.
| Product model | Rated current (A) | 1²t (A²s) | Breaking capacity | Power consumption (w) 0.5In |
Mounting bolts/torque | |
| Pre-arc | Fusing | |||||
| SEV14B750-12A | 12 | 412 | 517 | 5kA time constant (L/R): 2ms ± 0.5ms |
0.54 | Mounting bolt M6, recommended mounting torque 6N·m |
| SEV14B750-16A | 16 | 536 | 735 | 0.71 | ||
| SEV14B750-20A | 20 | 821 | 1594 | 0.84 | ||
| SEV14B750-25A | 25 | 1014 | 1893 | 1.06 | ||
| SEV14B750-30A | 30 | 1253 | 2347 | 1.39 | ||
| SEV14B750-40A | 40 | 1890 | 3743 | 1.73 | ||
| SEV14B750-50A | 50 | 2951 | 5384 | 1.96 | ||
| SEV14B750-60A | 60 | 3846 | 7543 | 2.30 | ||
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