AC Surge Protector Manufacturer & Wholesale Supplier
Complete AC surge protection range — Type 1, Type 2, Type 3 & Type 1+2, IEC/EN 61643-11 certified. Single-phase & 3-phase DIN rail. Factory-direct wholesale to distributors, EPC contractors & OEM brands. Part of the TrilPeak SPD range →
AC Surge Protector Range — Browse by Type or Phase
Seven product categories covering every AC protection requirement. Select your category for full specifications, datasheets and pricing.
Home & light commercial. 230V TT/TN-S. 1P+N / 1+0 configurations. Type 2 & Type 3.
View Single Phase SPDIndustrial & commercial. 400V/690V. 3P / 3P+N / 4P. TT / TN-S / TN-C earthing systems.
View 3-Phase SPDFirst line of defence. Direct lightning current. Service entrance & LPS sites. 50kA Iimp.
View Type 1 SPDMost specified. Main distribution boards. 20–100kA Imax. All configurations & earthing systems.
View Type 2 SPDEquipment-level. Sensitive devices. Point-of-use fine protection after upstream Type 2.
View Type 3 SPDSpace-saving. One device, two levels. No 0.5m separation rule. 7–25kA Iimp combined.
View Type 1+2 SPDProtects your SPD. Auto-disconnects failed MOV. Replaces standard backup fuse. DIN rail.
View Surge Backup ProtectorAC Surge Protector Range — Type 1, Type 2, Type 3 & Type 1+2
Pluggable hot-swap DIN rail · All Uc voltages in stock · View CE certificate →
Direct Lightning Current — Iimp Rated
Required where external LPS is installed per IEC 62305
Type 1 AC Surge Protector — TPK-I-50 | 50kA Iimp Class I SPD
Type 1 AC surge protector for service entrance — handles direct lightning current (10/350µs waveform, Iimp). Installed at the LPZ 0→1 boundary between utility meter and main breaker. Required where an external lightning protection system (LPS) is installed per IEC 62305.
Standard AC Surge Protector — Main Distribution Board
Required at every MDB per IEC 61643-11
Type 2 AC Surge Protector — TPK-20 / TPK-40 | 20–100kA Imax Class II SPD
Type 2 AC surge protector for main distribution boards — the most widely specified AC SPD type. Clamps induced lightning and switching surges (8/20µs waveform, Imax). TPK-20 (20kA) and TPK-40 (40kA) models. Remote signalling NO/NC/COM on TPK-40 S variant. 1P / 2P / 1P+N / 3P / 3P+N / 4P pole configurations.
Combined SPD — No 0.5m Separation Required
One unit replaces separate Type 1 + Type 2
Type 1+2 AC Surge Protector — TPK-7 / TPK-12.5 / TPK-I-15 / TPK-I-25 | Combined SPD
Combined Type 1+2 AC surge protector — one DIN rail unit replaces separate Type 1 + Type 2 installations. Eliminates coordination distance requirement (0.5m rule). Pluggable design (TPK-7, TPK-12.5) and monobloc (TPK-I-15, TPK-I-25). Ideal where wire length between service entrance and MDB cannot be kept under 0.5m, or where panel space is limited.
Equipment-Level Fine Protection — Up ≤1.5kV
Final stage after upstream Type 2 SPD
Type 3 AC Surge Protector — TPK-10 | Up ≤1.5kV Class III SPD
Type 3 AC surge protector for point-of-use / equipment terminal — the final protection stage after upstream Type 2 SPD. Clamps residual voltage to ≤1.5kV. Hot-swap plug-in module, 30-second replacement without system shutdown. 6 configurations covering all earthing systems (TT / TNS / TNC), single-phase and 3-phase.
DC SPD range — Solar PV DC SPD, BESS DC SPD, Full DC range.
Select Your AC Surge Protector — Uc, Configuration & kA by System
Match these four parameters to your installation: system voltage, earthing type, phase, and SPD type. Wrong Uc is the most common cause of premature AC SPD failure.
| AC System | Earthing | Recommended SPD | Min. Uc (L-N) | Min. kA | Config |
|---|---|---|---|---|---|
| 230V Single Phase | TN-S | Type 2 SPD | 275V | 20kA Imax | 1P+N |
| 230V Single Phase | TT | Type 2 SPD | 320V | 20kA Imax | 1P+N |
| 400V 3-Phase | TN-S | Type 2 SPD | 275V | 40kA Imax | 3P+N |
| 400V 3-Phase | TT | Type 2 SPD | 320V | 40kA Imax | 3P+N |
| 400V 3-Phase | TNC | Type 2 SPD | 275V | 40kA Imax | 3P |
| 690V 3-Phase | TN-S | Type 2 SPD | 385V | 65kA Imax | 4P |
| Service Entrance + LPS | Any | Type 1 SPD | Per system | 50kA Iimp | Per system |
| Space / distance limited | Any | Type 1+2 SPD | Per system | 7–25kA Iimp | Per system |
Get Wholesale Price
Share specs — Type, Uc, phase, kA, quantity. Factory-direct wholesale price & CE documents within 24 hours. Factory profile →
CE Docs & Datasheets
CE certificate (ECM Italy), EU DoC, IEC 61643-11 type test report, English datasheet. Required for EU customs and tenders. View CE certs →
Bulk & Project Supply
From sample to container. Consistent batch quality for EPC project supply. Third-party inspection (SGS / BV / Intertek) welcomed. Contact supplier →
AC Surge Protector Guides & IEC 61643-11 References
Essential reading for engineers, distributors & EPC contractors specifying AC SPDs. Browse all FAQs →
Why Electrical Distributors & EPC Contractors Specify TrilPeak AC Surge Protectors
TrilPeak manufactures AC surge protectors end-to-end — in-house MOV varistor production, 100% per-unit electrical testing, and CE certification from ECM Italy (EU notified body). Not a trading company. Factory-direct pricing, consistent batch quality, and complete documentation — accepted by EU customs and public procurement tenders in 50+ countries.
CE Certified — Third-Party ECM Italy, Not Self-Declared
CE certificates issued by ECM Italy (EU notified body) to IEC/EN 61643-11. Verifiable on the ECM registry. Accepted by EU customs, public procurement tenders, and distributor compliance audits without additional documentation.
In-House MOV Varistor Production — Consistent Batch Quality
TrilPeak produces MOV varistors in-house — the core component in every AC SPD. Controls batch-to-batch quality, eliminates third-party component risk, and maintains 7–30 day lead times regardless of external supply chain disruptions.
Complete CE Documentation — Ready for EU Customs & Tenders
Every order includes: CE certificate, EU Declaration of Conformity, IEC 61643-11 type test report, and English datasheet. Required for EU customs clearance, public tender submissions, and project commissioning — all delivered within 24h of order.
Factory-Direct Wholesale — No Middleman Markup
Direct factory pricing eliminates distributor markup. OEM/ODM available — EU DoC issued in your company name. Consistent batch quality for project supply. NDA standard, MOQ negotiable, territory exclusivity available.
Full documentation within 24h. Accepted for EU customs clearance, public tenders, and project commissioning in 50+ countries.
Custom AC Surge Protector Manufacturing — Build Your Electrical Brand
TrilPeak supports four cooperation models for distributors and electrical brands. CE certification transfers to your brand, EU DoC issued in your company name. OEM programme →
Your Brand, Our IEC-Certified Production
- Custom logo & brand on product
- Branded packaging & design support
- IEC 61643-11 certified production
- EU DoC in your company name
- Flexible MOQ — negotiable
- NDA as standard
Custom AC SPD Design
- Custom housing dimensions
- Modified terminal layout
- Non-standard Uc voltage values
- Bespoke enclosure design
- CE re-certification support
- 48h sample lead time confirmation
Own Electrical Brand Launch
- Full white-label AC SPD supply
- Your brand on all CE documentation
- Territory exclusivity available
- Marketing material support
- Technical training included
- Ongoing product development
Semi / Completely Knocked Down
- Component supply for local assembly
- Reduced import duty benefit
- TrilPeak components & sub-assemblies
- Technical assembly guidance
- Quality assurance support
- Scalable volume pricing
AC Surge Protector FAQ — Most Asked Questions by B2B Buyers
What is an AC surge protector and what does it protect against?
An AC surge protector (AC SPD) limits transient overvoltages on AC power distribution systems, protecting connected equipment from damage. It clamps voltage spikes caused by lightning strikes, utility grid switching, motor start/stop, and capacitor bank switching. Tested and classified per IEC 61643-11: Type 1 (service entrance), Type 2 (MDB), Type 3 (point-of-use).
How do I choose between Type 1, Type 2, and Type 3 AC surge protectors?
Install Type 1 at the service entrance if your building has an external lightning protection system. Install Type 2 at every MDB for induced surge protection (8/20µs, Imax). Add Type 3 at sensitive equipment terminals for final-stage fine protection (Up ≤1.5kV). All three work as a coordinated cascade. Full comparison →
What Uc (MCOV) voltage rating should I select for my AC system?
Uc must be at least 1.1× the highest normal line voltage. For 230V TN-S: Uc ≥ 275V. For 230V TT earthing: Uc ≥ 320V. For 400V three-phase TN-S: Uc ≥ 275V (L-N). For 400V TT: Uc ≥ 320V (L-N). Wrong Uc selection is the most common cause of premature AC SPD failure. Use the SPD selector →
What is the minimum kA rating for industrial AC surge protectors?
Recommended minimums: Type 1 at service entrance — 50kA Iimp (10/350µs) per phase. Type 2 at MDB — 40kA Imax minimum, 65kA+ for high-exposure industrial sites. Higher kA rating = longer SPD service life. Never under-specify — the AC SPD cost is negligible compared to the PLCs, drives, and equipment it protects. Selection guide →
Do I need both Type 1 and Type 2 AC SPDs, or is one enough?
Both are required for complete protection at sites with external LPS. Type 1 alone doesn't provide fine downstream protection. Type 2 alone cannot handle direct lightning energy at the service entrance. Use a Type 1+2 combined SPD when wire length between service entrance and MDB SPD cannot be kept under 0.5m, or when panel space is limited.
What is the 0.5m lead length rule for AC surge protectors?
Total connecting wire length (line conductor + PE wire combined) must be ≤ 0.5m. Every additional 1m adds approximately 1kV under impulse conditions due to wire inductance. For installations where 0.5m cannot be maintained, use a combined Type 1+2 SPD or add a series decoupling inductor. Installation guide →
What backup protection does an AC surge protector require?
All AC SPDs require an upstream backup OCPD for short-circuit protection. Use slow-blow gG-type fuses sized per the manufacturer's datasheet for the specific Imax/Iimp rating. Never use fast-acting fuses — they may open before the SPD operates. The backup OCPD must be installed in series on the supply side. Coordination guide →
Can TrilPeak supply AC surge protectors for wholesale distributor supply?
Yes. TrilPeak supplies AC surge protectors factory-direct to electrical distributors, EPC contractors, panel builders, and system integrators across 50+ countries. CE certificate, EU DoC, IEC 61643-11 test report, and English datasheet included as standard. OEM/ODM available with EU DoC in your company name. MOQ negotiable, quote and documentation within 24h. OEM programme →
Request AC Surge Protector Wholesale Pricing & Documentation
Share your specifications — AC system voltage, phase, earthing type, Type 1/2/3, Uc, kA rating, pole config, quantity — and receive factory-direct wholesale price + full CE documentation within 24 hours.