Type 1 Surge Protector Manufacturer & Wholesale Supplier | Class I SPD
TPK-I-50 series — 50kA Iimp (10/350µs), Class I IEC 61643-11. Direct lightning strike protection at the service entrance. 4 pole configurations covering all earthing systems (TT / TNS / TNC). CE certified by ECM Italy. Factory-direct wholesale to distributors, EPC contractors & OEM brands. Part of the TrilPeak surge protective device range.
Type 1 Surge Protectors — TPK-I-50 Series | 50kA Iimp | Class I IEC 61643-11
4 configurations · All earthing systems (TT / TNS / TNC) · DIN rail · Full SPD range → · Type 1+2 combined →
TPK-I-50 / 1+1 — Single Phase Type 1 Surge Protector | DIN Rail Class I
Single Phase · TT Earthing · 1P+N · IEC 61643-11 Class I
Single-phase Type 1 surge protector for TT earthing systems. Installed at the service entrance (LPZ 0/1 boundary) to handle direct lightning current before it reaches the distribution board. For residential whole-house and small commercial service entrance protection. Single-phase SPD range →
TPK-I-50 / 3+0 · 3+1 · 4+0 — 3-Phase Type 1 Surge Protector | Class I DIN Rail
3-Phase · TNC / TT / TNS Earthing · 3P / 3P+N / 4P · IEC 61643-11 Class I
Three-phase Type 1 surge protectors in 3 configurations for any earthing system — all rated 50kA Iimp per pole (10/350µs). The 3+1 configuration adds 100kA N-PE protection for commercial buildings and data centres. 3-phase SPD range → · Selection guide →
| Config | Poles | Iimp | Earthing | Typical Use |
|---|---|---|---|---|
| 3+0 | 3P (L1/L2/L3 + PE) | 50kA / pole | TNC | Industrial, manufacturing |
| 3+1 | 3P+N (L1/L2/L3/N + PE) | 50kA L-N 100kA N-PE | TT / TNS | Commercial, data centres |
| 4+0 | 4P (L1/L2/L3/N + PE) | 50kA / pole | TNS | Critical infrastructure |
Type 1+2 combined SPD installs at the service entrance when wire length exceeds 0.5m. Full wholesale range available.
Where to Install a Type 1 Surge Protector — Service Entrance & LPZ
The Type 1 SPD is the first point in the protection cascade — installed at the LPZ 0/1 boundary between the utility meter and the main breaker, where direct lightning current must be intercepted before it reaches any downstream device.
50kA Iimp (10/350µs). Mandatory per IEC 62305 when an external LPS is present. No Type 2 can substitute at this position.
Type 2 SPD — handles residual surge energy (8/20µs, Imax). Coordinates with Type 1 upstream.
Type 3 SPD — close-protection for sensitive equipment at the point of use.
0.5m rule: Every 1m of lead wire adds ~1kV under impulse. Keep L + PE under 0.5m — or use a Type 1+2 combined SPD.
How to Order Type 1 Surge Protectors — Wholesale & Distributor Supply
Factory-direct supply to electrical distributors, wholesalers, EPC contractors, and panel builders across 50+ countries. CE documentation included as standard. Quote & datasheet within 24h. Also available as Type 1+2 combined SPD →
Send Your Specifications
Earthing system (TT / TNS / TNC), configuration (1+1 / 3+0 / 3+1 / 4+0), Uc, quantity, and destination port. OEM/ODM buyers: include logo and target market.
Quote & Datasheet in 24h
Factory-direct pricing, lead time, and full documentation — CE certificate, EU DoC, IEC 61643-11 test report, and English datasheet — included by default.
Confirm & Produce
Order confirmation + deposit → production starts. Third-party inspection (SGS / BV / Intertek) welcomed at no charge to your account.
Ship & Clear Customs
EXW, FOB, CIF, or DDP. CE certificate and EU DoC accepted by EU customs for clearance without additional documentation.
Who Buys Type 1 Surge Protectors from TrilPeak?
EPC contractors, electrical consultants, panel builders, electrical distributors, and lightning protection system integrators specifying Class I IEC 61643-11 surge protection for service entrance panels. Type 1 SPD is mandatory per IEC 62305 when an external lightning protection system (LPS) is present. Whole-building surge protection guide →
Industrial
Type 1 SPD for Industrial Manufacturing Facilities
High-value PLC, drive, and SCADA equipment at risk from direct lightning. TPK-I-50 3+0 (TNC) or 4+0 (TNS) at service entrance. Prevents production downtime and equipment loss.
Industrial SPD Guide →
Commercial / Data Centre
Type 1 SPD for Commercial Buildings & Data Centres
Mission-critical infrastructure with external LPS. TPK-I-50 3+1 (TT/TNS) at main service entrance. Required by IEC 62305 when external lightning protection system is present.
Data Centre SPD Guide →
Solar PV
Type 1 Surge Protector for Solar PV Power Plants
Utility-scale and commercial PV sites with exposed cable runs and high lightning exposure. Type 1 at AC service entrance, combined with DC SPD at string combiner boxes.
Solar SPD Guide →
Healthcare
Type 1 SPD for Hospitals & Healthcare Facilities
Life-critical systems with zero-downtime requirements. Type 1 SPD mandatory per healthcare electrical standards when external LPS installed. TPK-I-50 3+1 or 4+0.
Healthcare SPD Guide →
Telecom
Type 1 SPD for Telecommunication Base Stations
Exposed tower sites with direct lightning strike risk. Type 1 SPD at base station power entrance. Combined with signal line SPD for complete protection.
Telecom SPD Guide →
Critical Infrastructure
Type 1 Surge Protector for Critical Infrastructure & Utilities
Power substations, water treatment, transport infrastructure. TPK-I-50 4+0 (TNS) with 50kA Iimp per pole at utility service entrance panels.
Power Panel SPD Guide →Why Distributors & EPC Contractors Specify TrilPeak Type 1 SPD
Most Chinese SPD suppliers are trading companies or assembly-only operations. TrilPeak is a vertically integrated type 1 surge protector manufacturer: in-house MOV varistor production, 100% per-unit impulse testing to 10/350µs waveform, and CE certification from ECM Italy — accepted by EU customs, public procurement tenders, and distributor partner audits in 50+ countries.
Third-Party CE Certification — Not Self-Declared
CE certificates issued by ECM Italy — an EU notified body. Verifiable on the ECM registry. Accepted by EU customs, public procurement tenders, and OEM audits without additional paperwork. Cert: 0P260312.YTEUD26 · Valid to 2031.
View CE Certificate →100% Per-Unit 10/350µs Impulse Testing
Every Type 1 SPD unit is tested to 10/350µs impulse current before shipment — not sampling inspection. In-house MOV production ensures consistent batch quality. Third-party inspection (SGS / BV / Intertek) welcomed at no charge.
Factory & QC Process →All Earthing Systems — TT, TNS, TNC
Stock covers all IEC earthing configurations: 1+1 (TT single-phase), 3+0 (TNC), 3+1 (TT/TNS), 4+0 (TNS 4-pole). Custom Uc and configurations on request. PDF datasheets for all variants. DIN rail SPD guide →
In Stock · 7–30 day lead time · Vertical Integration →Flexible Supply for Distributors & Electrical Brands
Factory-direct stock orders, project supply, and custom programme options for distributors building their own electrical brand. CE documentation supports EU market entry and tender submissions. MOQ negotiable, NDA available.
Distributor Programme →CE certificates, EU DoC, and IEC type test reports available free of charge within 24h. Accepted for EU customs, tender submissions, and project commissioning.
Type 1 Surge Protector Selection Guides & IEC 61643-11 Technical References
For engineers, EPC contractors, and distributors specifying Class I lightning protection. Browse all FAQs →
IEC protection cascade, 10/350µs vs 8/20µs waveforms, and which class each installation point requires.
Read Guide →
Iimp, Up, Uc parameters for Type 1. What the 10/350µs waveform means and why Class I certification matters for EU customs.
Read Guide →
How to choose between 3+0, 3+1, and 4+0 configurations for TNC, TT, and TNS earthing systems.
Read Guide →Type 1 Surge Protector FAQ — Class I SPD & IEC 61643-11
What is a Type 1 surge protector?
A Type 1 surge protector (Class I SPD per IEC 61643-11) is installed at the service entrance to handle direct lightning current. Tested with a 10/350µs impulse waveform with Iimp ratings of 25–100kA per pole — far higher energy capacity than Type 2 (8/20µs waveform). Required when the building has an external lightning protection system (LPS) per IEC 62305. What is an LPS? →
Where should a Type 1 SPD be installed?
Type 1 SPD is installed at the service entrance — at the LPZ 0/1 boundary, between the utility meter and the main breaker. Wire length must be kept under 0.5m total (line + PE wire combined) to avoid the voltage addition effect. If longer runs are unavoidable, specify a Type 1+2 combined SPD. Type 1+2 guide → Use the SPD selector tool → to confirm the right model.
What is the difference between Type 1 and Type 2 SPD?
Type 1 handles direct lightning current (10/350µs waveform, Iimp parameter) at the service entrance. Type 2 handles residual surge energy (8/20µs waveform, Imax parameter) at the MDB. Type 1 has much higher energy handling capacity. In a cascaded protection system, both are used together. Full comparison →
What configuration should I choose — 1+1, 3+0, 3+1, or 4+0?
1+1: single-phase, TT earthing. 3+0: 3-phase TNC (combined N+PE conductor). 3+1: 3-phase TT or TNS with separate neutral — commercial buildings, data centres. 4+0: 4-pole TNS — critical facilities requiring full 4-pole protection. 3-phase selection guide →
Does a Type 1 SPD need a backup fuse?
Yes. Type 1 SPDs require a dedicated backup OCPD (fuse or MCB) for short-circuit protection — the SPD itself does not interrupt fault current. The maximum backup fuse rating is specified per model and must be installed in series upstream of the SPD. SPD & fuse coordination →
Why does the 0.5m wire length rule matter?
Under impulse conditions, every 1m of connecting wire adds approximately 1kV of additional voltage due to inductance. If the total lead length (line conductor + PE conductor) exceeds 0.5m, the effective protection level (Up) is significantly increased — potentially defeating the SPD's purpose. Use a V-shape wiring configuration where possible. Installation guide →
Can a Type 2 SPD be used instead of Type 1 at the service entrance?
No — not where an external lightning protection system is present. Type 2 SPDs are rated to 8/20µs waveform (Imax), which cannot handle the energy levels of a direct lightning strike (10/350µs). If an LPS is present, IEC 62305 requires a Type 1 (Class I) SPD at the LPZ 0/1 boundary. Type 1+2 SPD →
When should I specify Type 1+2 combined instead of separate Type 1 and Type 2?
A Type 1+2 combined SPD is the right choice when wire length cannot be kept under 0.5m total; when panel space is limited; or when a single DIN rail unit at the service entrance with both Class I and Class II protection is required. Type 1+2 selection guide →
Request Type 1 Surge Protector Wholesale Pricing & CE Certification
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