Type 3 Surge Protector Manufacturer & Wholesale Supplier | Class III SPD
Type 3 surge protector — TPK-10 series, Class III IEC 61643-11, Up ≤1.5kV. Final-stage point-of-use SPD installed at the equipment terminal. 6 configurations for all earthing systems (TT / TNS / TNC). CE certified by ECM Italy. Factory-direct wholesale to distributors & EPC contractors. Part of the TrilPeak surge protective device range.
Type 3 Surge Protector Range — TPK-10 Series | Class III IEC 61643-11
6 configurations · Up ≤1.5kV · All earthing systems (TT / TNS / TNC) · DIN rail · Full SPD range → · Upstream Type 2 SPD →
TPK-10 — Type 3 Surge Protector | Class III Point-of-Use | 6 Configurations
Single Phase (primary) · 3-Phase available · DIN Rail · IEC 61643-11 Class III
The TPK-10 type 3 surge protector is the final-stage point-of-use SPD installed directly at the equipment terminal — clamps residual surge voltage to ≤1.5kV after upstream Type 2 SPD at the MDB. Most installations use single-phase configurations (1+0, 1+1, 2+0). Three-phase versions (3+0, 3+1, 4+0) are available for industrial PLCs, drives, and critical 3-phase equipment. Hot-swap plug-in module — replacement without system shutdown. Optional remote signalling (S variant) for BMS/SCADA integration. Installation guide → · PLC protection →
| Config | Phase | Earthing | Poles | Typical Use | Datasheet |
|---|---|---|---|---|---|
| 1+0 | Single | TNS / TNC | L+PE | TN systems — most common | PDF → |
| 1+1 | Single | TT | L+N+PE | TT systems — residential | PDF → |
| 2+0 | Single | TNS | L+N+PE | TN-S close to equipment | PDF → |
| 3+0 | 3-Phase | TNC | 3P+PE | Industrial TN-C panel | PDF → |
| 3+1 | 3-Phase | TT | 3P+N+PE | Industrial TT critical loads | PDF → |
| 4+0 | 3-Phase | TNS | 4P+PE | Critical 3P industrial loads | PDF → |
Type 3 is the final stage. Upstream protection (Type 1 or 2) is required for full system coordination.
Where to Install Type 3 SPD — Point-of-Use
Type 3 SPD is installed as close as possible to the sensitive equipment terminal, often inside the end-user machine cabinet or wall outlet. It acts as the final buffer against residual surges that pass through Type 1 and Type 2 devices.
Type 1 SPD — first stage protection.
Type 2 SPD — intermediate protection.
TPK-10 installed at machine entrance. Clamps voltage to ≤1.5kV for sensitive PLC/PCB inputs. Requires ≥10m separation from upstream Type 2.
How to Order Type 3 SPD — Wholesale & OEM
Factory-direct supply to distributors, EPC contractors, and OEM brands. CE documentation included as standard. Quote within 24h. Type 1 vs 2 vs 3 comparison →
Send Your Specifications
System voltage, configuration, quantity, and destination. OEM/ODM buyers: include logo requirements.
Quote in 24h
Factory-direct pricing, lead time, and full CE documentation included.
Confirm & Produce
Confirmation + deposit → production starts. Third-party inspection (SGS/BV) welcomed.
Ship & Clear Customs
EXW, FOB, CIF, or DDP. CE documents accepted globally.
Who Buys Type 3 SPD Wholesale from TrilPeak?
Distributors and OEM equipment manufacturers sourcing Type 3 SPDs for industrial machines, medical equipment, and office equipment. Reliable Class III protection to ensure equipment lifespan.
AutomationIndustrial Automation & PLC
Protect PLC inputs, motor drives, and sensor modules from switching surges in industrial environments.
Industrial SPD Guide →
Medical / LabMedical & Lab Equipment
Precision healthcare and lab equipment requires tight voltage clamping (Up ≤1.5kV) at the device terminal.
Healthcare SPD Guide →
IT / OfficeIT & Network Infrastructure
Protect server racks, communication hardware, and office workstations from internal switching transients.
IT Infrastructure SPD →Why Industrial Brands Choose TrilPeak Type 3 SPD
We are a vertically integrated manufacturer, producing our own MOV varistors for reliable, consistent Class III clamping performance. With 100% per-unit electrical testing and CE certification by ECM Italy, our Type 3 SPDs meet the rigorous protection requirements of industrial OEM equipment.
CE Certified — ECM Italy
CE certificate issued by ECM Italy (EU notified body). Verifiable on the ECM registry. Accepted by EU customs and OEM audits without additional documentation.
View CE Certificate →100% Per-Unit Testing
Every TPK-10 unit undergoes rigorous testing (clamping voltage, leakage current, thermal safety) before shipment. Consistent batch quality for industrial OEMs.
Factory Process →6 Configurations in Stock
All earthing systems covered: 1+0, 1+1, 2+0, 3+0, 3+1, 4+0. Solutions for every single-phase and 3-phase point-of-use application.
Browse SPD range →OEM/ODM Ready
Laser logo, custom packaging, rebranded DoC in your name. Launch your own SPD brand with minimal R&D investment. NDA available.
OEM Programme →CE certificates, EU DoC, and IEC type test reports available free of charge within 24h.
Type 3 SPD Selection Guides & References
Technical support for specifying point-of-use surge protection. Browse all FAQs →
Type 1 vs 2 vs 3 — understand the protection hierarchy.
Read Guide →
Technical requirements for Type 3 SPDs.
Read Guide →
Securing automation systems with Type 3 SPDs.
Read Guide →Type 3 SPD FAQ — IEC 61643-11
What is a Type 3 SPD?
A Type 3 SPD (Class III SPD per IEC 61643-11) is the final-stage device installed as close as possible to the protected equipment (PLC, instrument, appliance). Its purpose is to clamp residual surge voltage to a level low enough (Up ≤1.5kV) for sensitive electronic equipment, after higher energy surges have been managed by Type 1 and Type 2 devices upstream.
Do I always need a Type 3 if I have Type 2?
If the distance between the Type 2 SPD at the MDB and the sensitive equipment exceeds 10–20 meters, or if the equipment is extremely sensitive to voltage spikes (e.g., medical devices, precision lab instruments), a Type 3 SPD at the equipment terminal is necessary to compensate for surge voltage oscillation along the cable run.
Can a Type 3 SPD be used alone?
No. Type 3 SPDs have very limited surge energy handling capacity. They are designed only for residual surges. They must be part of a coordinated protection cascade (Type 1 or Type 2 upstream). Using a Type 3 alone in an area with any significant lightning exposure will result in immediate failure.
What is the 10m separation rule?
IEC 61643-12 recommends a minimum cable distance of 10 meters between Type 2 and Type 3 SPDs. This separation is required to ensure proper coordination; without it, the Type 3 device may experience higher surge energy than its rating allows, leading to premature failure.
Request Type 3 Surge Protector Wholesale Pricing & CE Documentation
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