● Standard: IEC/EN 61643-11
● Protects the system from voltage peaks or transient overvoltages.
● Surge Rating: In=20kA (8/20 µs), Imax=40kA (8/20us)
● IEC/EN Category: Class II / Type 2
● Voltage protection level: 1.5KV
● Max. continuous operating voltage: 275V
● Housing: Pluggable Design
EKU6-T2-40S is a group of Type 2, Class C Surge Protective Devices with a modular design featuring plug-in modules. These devices are designed to protect against transient overvoltage caused by fast switching operations or indirect lightning strikes (residual effects). They are multi-pole compact surge protectors that allow for easy installation and retrofitting due to their narrow design, requiring minimal space (width of 18mm).
| No.of poles | 2P | 1P+NPE |
| Network systems | TN-S | TT, TN-S |
| Mode of protection | L-PE, N-PE | L-N, N-PE |
| Protective elements | High Energy MOV | High Energy MOV and GDT |
| Max. continuous operating a.c.voltage (L-N) | Uc | 275V | |
| Max. continuous operating a.c.voltage (N-PE) | Uc | 255V | |
| Norminal discharge current (8/20μs) (L-N)/(N-PE) | In | 20KA | |
| Maximum discharge current (8/20μs) (L-N)/(N-PE) | Imax | 40KA | |
| Voltage protection level (L-N)/(N-PE) | Up | ≤1.5KV | |
| Voltage protection level 5kA | UP | ≤1.0KV | |
| Response time (L-N)/(N-PE) | tA | ≤25ns/≤100ns | |
| Operating temperature range | Tu | -40℃ to +80℃ | |
| Max. backup fuse | 125 A gL/gG | ||
| Fault Indication | Red | ||
| Cross-section area (Min.)/(Max.) | 4mm²/10mm²(L/N),16mm²(PE) | ||
| Mounting | 35 mm DIN Rail, EN 60715 | ||
| Enclosed material | Thermal Plastic UL94-V0 | ||
| Degree of Protection | IP20 | ||


| Poles | Max. Continuous Operating AC voltage |
| 275V | |
| 1+NPE | EKU6-T2-40S-1PN275 |
| 2P | EKU6-T2-40S-2P275 |
| With Remote Signaling | |
| 1+NPE | EKU6-T2-40S-1PN275S |
| 2P | EKU6-T2-40S-2P275S |
EKU6-T2-40S is a group of Type 2, Class C Surge Protective Devices with a modular design featuring plug-in modules. These devices are designed to protect against transient overvoltage caused by fast switching operations or indirect lightning strikes (residual effects). They are multi-pole compact surge protectors that allow for easy installation and retrofitting due to their narrow design, requiring minimal space (width of 18mm).