EKU5-T1+T2-12 SPD Surge Protective Device (12.5kA Iimp, 150V-385V Uc)
Why Quality Matters?
Grouped by product family for cleaner RFQ selection: one page shows the available variant SKUs and key specification choices without creating duplicate product pages.
Poles:
Variant SKU:
RFQ inputs
Quantity, destination, certificate needs.
QC proof
Inspection and document review before shipping.
Export ready
Packaging and mixed-container planning.
Procurement Snapshot
Commercial details are confirmed by SKU, quantity and destination at RFQ stage.
RFQ checklist
Send these points with your inquiry for faster pricing.
Documents to confirm
Often sourced together
Technical Data
Specification values for buyer review and RFQ matching
| Product Family ID | OS-ETK-EKU5-T1PLUST2-12 |
|---|---|
| Variant SKU Count | 6 |
| Supplier | ETK |
| Supplier Model | EKU5-T1PLUST2-12 |
| Product Type | Surge Protective Device |
| Available Voltage Ratings | 150, 275, 320, 385, 440V AC |
| Available Poles | 1P / 1P+NPE / 2P / 3P / 3P+NPE / 4P |
| Rated Voltage | 150, 275, 320, 385, 440V AC |
| Protection Degree | IP20 (built-in) |
| Iec Category | Type 1+2 |
| Impulse Discharge Current | 12.5kA |
| Maximum Discharge Current | 60kA |
| Nominal Discharge Current | 30kA |
| Poles | 1P, 2P, 3P, 4P, 1P+NPE, 3P+NPE / 1P / 1P+NPE / 2P / 3P / 3P+NPE / +1 more |
| Protection Degree | IP20 (built-in) |
| Rated Voltage | 150, 275, 320, 385, 440V AC |
| Standard | IEC/EN61643-11 |
Product Overview
Combined Class I+II AC surge protector with 12.5kA impulse discharge current (Iimp) covering 150V through 440V UC in six pole configurations. The 12.5kA Iimp satisfies Type 1 requirements for buildings with external lightning protection systems where partial lightning current enters via the incoming supply.
Six pole options (1P, 1P+NPE, 2P, 3P, 3P+NPE, 4P) cover all standard AC distribution configurations from single-phase to four-wire three-phase systems — one product family for a whole facility.
Combined AC Type 1+2 SPDs protect the inverter AC output and main distribution board from grid-side overvoltage surges in a single device. Connect with the shortest possible lead length to the busbar — inductive voltage drop in the SPD connection leads reduces protection effectiveness during fast-rise-time transients.
Applications
Inverter output protection
AC distribution boards
EV and PV support circuits
Residential and commercial electrical BOS
Certifications & Compliance
Frequently Asked Questions
What is Iimp and how is it different from Imax?
Iimp is the impulse current used to test Type 1 (Class I) SPDs — it simulates partial lightning strike current. Imax is the maximum surge current for Type 2 (Class II) devices. A combined device must meet both standards. EKU5-T1+T2-12 carries 12.5kA Iimp (Type 1) and Imax (Type 2) ratings.
Where is a combined Type 1+2 SPD installed?
Combined Type 1+2 SPDs are installed at the main service entry — immediately after the main incomer in the main distribution board. This protects downstream circuits from lightning current arriving via the utility supply.
Technical Guides
Products & Systems
Markets & Services
Need project-specific engineering support?
Free CAD layout, wind/snow load calculations, and BOM review included with project orders.
Related Products
More components from the same application category.
EKU5-T2-20PV Type 2 Surge Protective Device for Solar PV Systems (20kA/DC600-1500V)
EKU5-T2-20PV Type 2 Surge Protective Device for Solar PV Systems (20kA/DC600-1500V) is organized as ...
EKU5-T2-40PV Type 2 Surge Protective Device (SPD) for Photovoltaic Systems
EKU5-T2-40PV Type 2 Surge Protective Device (SPD) for Photovoltaic Systems is organized as one OmniS...
Type 1+2 Combined Protection | 40kA DC SPD | 1500V Solar PV Surge Arrester
Type 1+2 Combined Protection | 40kA DC SPD | 1500V Solar PV Surge Arrester is organized as one OmniS...