Shenzhen LLH Electrical Co., Ltd.
| Delivery Time | 5-8 work days |
| Unified Mounting | 35mm DIN Rail, IP20 Indoor Enclosure |
| Unified Certifications | TUV, CE, IEC 61643-11 Type 2 |
| Packaging Details | 1 piece/box |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Unified Electrical Specs | In 20kA, Imax 40kA, tA ≤25ns |
| Supply Ability | 6000 pieces/month |
| Optional Uc Ratings | 275Vac, 320Vac, 385Vac, 440Vac |
| Certification | CE,TUV |
| Model Number | LPM 20-275/4 |
| Place of Origin | China |
| Brand Name | LLH |
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Product Specification
| Delivery Time | 5-8 work days | Unified Mounting | 35mm DIN Rail, IP20 Indoor Enclosure |
| Unified Certifications | TUV, CE, IEC 61643-11 Type 2 | Packaging Details | 1 piece/box |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Unified Electrical Specs | In 20kA, Imax 40kA, tA ≤25ns |
| Supply Ability | 6000 pieces/month | Optional Uc Ratings | 275Vac, 320Vac, 385Vac, 440Vac |
| Certification | CE,TUV | Model Number | LPM 20-275/4 |
| Place of Origin | China | Brand Name | LLH |
| High Light | three phase surge protection device ，low maintenance SPD for electrical rooms ，unattended surge protection device | ||
Product Description
Conventional surge protection devices require regular cabinet disassembly for internal inspection, raising labor costs and production downtime losses. This 4-pole SPD implements dual status monitoring: front green/red window enables instant on-site visual checks, while passive remote contacts transmit fault alerts to central control platforms without frequent cabinet opening. Pluggable modular design accelerates faulty unit replacement without full panel power shutdown or terminal rewiring. Wide temperature and humidity tolerance reduces premature degradation caused by ambient shifts, V0 flame retardant housing minimizes costly fire hazard repairs, and built-in thermal release disconnects failed modules automatically to avoid cascaded downstream equipment damage, cutting annual maintenance labor and spare part consumption for factory and commercial power distribution systems.
Key Features
Dual local visual + remote signal monitoring reduces manual cabinet inspection frequency
Plug-in single-module replacement shortens equipment downtime during repairs
Consistent performance under wide temp/humidity conditions lowers premature failure rates
V0 flame retardant housing mitigates severe cabinet fire maintenance incidents
Built-in thermal release isolates faulty circuits to prevent cascaded hardware damage
FAQ:
Q1: What routine inspection cycle is recommended?
A: Quarterly visual window checks suffice; remote monitoring captures real-time failure signals, eliminating monthly cabinet disassembly inspections.
Q2: Does single matching module replacement restore full original surge performance?
A: Installing a new same-rating module restores factory-standard surge diversion and residual voltage clamping performance for the full circuit.
Q3: Can remote signalling fully replace manual inspection for long-term unattended power rooms?
A: Remote contacts deliver instant fault alerts; annual on-site visual verification is recommended to confirm contact signal integrity.
Company Details
Business Type:
Manufacturer
Year Established:
2018
Total Annual:
1000000-10000000
Employee Number:
20~100
Ecer Certification：
Verified Supplier
Shenzhen Leilihai Electric Co., Ltd We are a high-tech enterprise that integrates the research and development, manufacturing, sales, and installation services of lightning protection devices and lightning protection system supporting products. The company has successively passed the German TUV cer... Shenzhen Leilihai Electric Co., Ltd We are a high-tech enterprise that integrates the research and development, manufacturing, sales, and installation services of lightning protection devices and lightning protection system supporting products. The company has successively passed the German TUV cer...
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