Shenzhen LLH Electrical Co., Ltd.
| Delivery Time | 5-8 work days |
| Humidity Tolerance | ≤95%RH for Constant Temp & Humidity Labs |
| Monitoring Solution | Local Visual Window + Remote Signalling Contact |
| Packaging Details | 1 piece/box |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Response Time | ≤25ns Fast Transient Voltage Clamping |
| Supply Ability | 6000 pieces/month |
| Minimum Voltage Protection Level Up | ≤1.25kV (Low Voltage Variant) |
| Model Number | LPM 20-275/4 |
| Brand Name | LLH |
| Certification | CE,TUV |
| Place of Origin | China |
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Product Specification
| Delivery Time | 5-8 work days | Humidity Tolerance | ≤95%RH for Constant Temp & Humidity Labs |
| Monitoring Solution | Local Visual Window + Remote Signalling Contact | Packaging Details | 1 piece/box |
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Response Time | ≤25ns Fast Transient Voltage Clamping |
| Supply Ability | 6000 pieces/month | Minimum Voltage Protection Level Up | ≤1.25kV (Low Voltage Variant) |
| Model Number | LPM 20-275/4 | Brand Name | LLH |
| Certification | CE,TUV | Place of Origin | China |
| High Light | three phase surge protection device ，SPD for laboratory instruments ，precision measuring surge protector | ||
Product Description
Laboratory precision measuring instruments are highly sensitive to voltage fluctuations and lightning surges; transient high voltage causes sensor calibration drift and permanent circuit damage. This 4-pole Type 2 SPD is installed on lab three-phase incoming distribution panels. The low voltage variant delivers residual voltage as low as ≤1.25kV with ≤25ns nanosecond-level response to divert surge currents and contain impulse voltage within instrument safe tolerance ranges. Wide humidity tolerance fits constant temperature & humidity lab environments, remote contacts feed fault alerts to central lab control systems for unattended operation safety, and pluggable modules simplify maintenance without full lab power shutdown. TUV & CE certification meets procurement standards for international research laboratory projects.
Key Features
Low residual voltage ≤1.25kV variant optimized for high-precision measuring hardware
Nanosecond ≤25ns response blocks microsecond transient voltage spikes
Consistent performance under constant high humidity in climate-controlled labs
Remote fault alerts prevent unprotected instrument operation during off-hours
Modular replacement without full lab main power interruption
FAQ:
Q1: Do single-phase precision instruments require separate single-pole SPDs?
A: This 4P main SPD protects lab three-phase incoming power; supplementary single-phase Type 3 SPDs are recommended at individual instrument terminals for fine protection.
Q2: Can SPD failure trigger automatic alerts during unattended overnight lab operation?
A: Remote signalling contacts connect to lab central control or IoT gateways to push fault notifications to back-end monitoring platforms.
Q3: Does service life remain stable under 24/7 continuous climate-controlled lab operation?
A: Industrial-grade varistor components deliver consistent long-term surge protection under steady temperature and humidity laboratory conditions.
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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