Surge Protective Devices (SPD) are devices that prevent the damaging effects of high-voltage surges that occur in power transmission lines due to causes such as high-voltage line faults, lightning strikes, and circuit breaker openings. These devices, or simply protection elements that discharge excessive voltage in energy transmission lines to the ground, are known as Surge Protective Devices (SPD). Depending on the usage location, there are four types of Surge Protective Devices (SPD): Type 1 (B), Type 2 (C), Type 3 (D), and Type 1+2 (B+C). Lightning rod systems only protect installations from the physical effects of lightning. This does not mean that electrical devices are fully protected. For electrical protection, it is essential to use a Surge Protective Device (SPD) (internal lightning protection) in the installations. The Surge Protective Device (SPD) used in the main panels (Type B) cannot guarantee protection for subpanels. The majority of surge voltages are caused by internal surges, and for these types of voltages, Type C Surge Protective Devices (SPD) should be used in subpanels. The Surge Protective Devices (SPD) suitable for use in the main panel have an Iimp current rating, while those for subpanels and sensitive device panels should have an Imax current rating. Surge Protective Device (SPD) selection should be made based on these current ratings as needed.
Product Description | Main Product Group | Product Type | Iimp | Imax | In | Number of Poles | Operating Voltage (V) | Utilization Current | Catalog Code | |
Surge Protective Device (SPD) FSPD-D20 1PN Imax:20kA 440Vac | Surge Protective Device (SPD) | FSPD | 20 kA | 10 kA | 1PN | 440V | AC | 9UA-K4402-0010 | Detail | |
Surge Protective Device (SPD) FSPD-C40 1PN Imax:40kA 440Vac | Surge Protective Device (SPD) | FSPD | 40 Ka | 20 kA | 1PN | 440V | AC | 9UA-K4402-0020 | Detail | |
Surge Protective Device (SPD) FSPD-C40 3PN Imax:40kA 440Vac | Surge Protective Device (SPD) | FSPD | 40 kA | 20 kA | 3PN | 440V | AC | 9UA-K4404-0020 | Detail | |
Surge Protective Device (SPD) FSPD-B50 3PN Iimp:50kA 275Vac | Surge Protective Device (SPD) | FSPD | 50 kA | 100 kA | 3PN | 275V | AC | 9UA-S2754-0100 | Detail | |
Surge Protective Device (SPD) FSPD-BC25 3PN Iimp:25kA 300Vac | Surge Protective Device (SPD) | FSPD | 25 kA | 25 kA | 3PN | 300V | AC | 9UA-SB004-0025 | Detail | |
Surge Protective Device (SPD) FSPD-BC5 3PN11 Imax:50kA 385Vac | Surge Protective Device (SPD) | FSPD | 5 kA | 50 kA | 20 kA | 3PN | 385V | AC | 9UA-SB004-0020 | Detail |
Surge Protective Device (SPD) FSPD-BC12 3PN11 Imax:50kA 275Vac | Surge Protective Device (SPD) | FSPD | 12,5 kA | 50 kA | 20 kA | 3PN | 275V | AC | 9UA-SB004-0021 | Detail |
Surge Protective Device (SPD) FSPD-BC13 3PN11 Imax:100kA 275Vac | Surge Protective Device (SPD) | FSPD | 12,5/25 kA | 100 kA | 50 kA | 3PN | 275V | AC | 9UA-K4404-0021 | Detail |
Surge Protective Device (SPD) FSPD-BC15 3PN11 Imax:100kA 385Vac | Surge Protective Device (SPD) | FSPD | 15/25 kA | 100 kA | 40 kA | 3PN | 385V | AC | 9UA-SB004-0040 | Detail |
Surge Protective Device (SPD) FSPD-BC5DC 3P11 Imax:50kA 1000Vdc | Surge Protective Device (SPD) | FSPD | 5 kA | 50 kA | 20 kA | 3P | 1000V | DC | 9UA-SB003-DC20 | Detail |
Surge Protective Device (SPD) FSPD-C40DC 1PN Imax:40kA 1000Vdc | Surge Protective Device (SPD) | FSPD | 40 kA | 20 kA | 1PN | 1000V | DC | 9UA-K4402-DC20 | Detail | |
Surge Protective Device (SPD) FSPD-C40DC 3P Imax:40kA 1000Vdc | Surge Protective Device (SPD) | FSPD | 40 kA | 20 kA | 3P | 1000V | DC | 9UA-K4403-DC20 | Detail |