Siemens 3EK7120-4CC4 Outdoor Surge Arrester (Ur=12 kV)
Siemens 3EK7120-4CC4 outdoor surge arrester for medium voltage networks.
The Siemens 3EK7120-4CC4 is a high-performance surge arrester from the 3EK7 series, engineered for outdoor use in medium voltage networks. Adhering to IEC60099-4 standards, it features Ur=12 kV and Uc=9.6 kV, with a rated leakage current of 10 kA.
Key technical specifications include a discharge voltage (Ures) of 31.8 kV at 10 kA (8/20 µs), a charge transfer rating of 0.4 C, and a thermal rated charge transfer of 1.1 C. It also handles a rated short-circuit current of 20 kA, has a creepage distance of 485 mm, and a height of 200 mm. The short-term load (SSL) is 2500 N.
Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3EK7120-4CC4. We provide reliable access to specialized components, ensuring your medium voltage systems are protected with quality surge arresters, backed by our commitment to efficient service and support.
| Standard | IEC60099-4 |
| Ur | 12 kV |
| Uc | 9.6 kV |
| Rated Leakage Current | 10 kA |
| Ures (10 kA, 8/20) | 31.8 kV |
| Charge Transfer Rating | 0.4 C |
| Thermal Rated Charge Transfer | 1.1 C |
| Rated Short-Circuit Current | 20 kA |
| Creepage Distance | 485 mm |
| Height | 200 mm |
| Short-term Load (SSL) | 2500 N |