LMDS‑C40‑PV 500Vdc 2P PV Surge Protective Device
LMDS‑C40‑PV 500Vdc 2P PV Surge Protective Device
LMDS‑C40‑PV is a T2‑type DC surge protective device designed for 500Vdc photovoltaic systems. 2‑pole DIN‑rail mounting with In 20kA, Imax 40kA surge capacity, compliant with IEC 61643‑31. Visual fault status indicator provides on‑site quick inspection. Installed inside solar combiner boxes to protect PV inverters and DC components against lightning surges and transient over‑voltage. Compact modular design, easy replacement of protection modules. Support bulk order, OEM branding and custom project solutions for solar integrators and cabinet manufacturers.
LMDS‑C40‑PV is a T2‑type DC surge protective device designed for 500Vdc photovoltaic systems. 2‑pole DIN‑rail mounting with In 20kA, Imax 40kA surge capacity, compliant with IEC 61643‑31. Visual fault status indicator provides on‑site quick inspection. Installed inside solar combiner boxes to protect PV inverters and DC components against lightning surges and transient over‑voltage. Compact modular design, easy replacement of protection modules. Support bulk order, OEM branding and custom project solutions for solar integrators and cabinet manufacturers.
Product Overview
Key Product Features
✅ Specially Designed for 500Vdc PV DC System
Optimized DC voltage withstand characteristic, stable performance under long‑term photovoltaic DC working voltage, avoid thermal runaway risk.
✅ T2 Surge Capacity: In 20kA, Imax 40kA
Strong surge discharge capability, effectively restrain lightning induced transient over‑voltage for solar DC loops.
✅ 2‑Pole Structure for DC+ and DC‑
Independent protection for positive and negative DC lines, complete surge protection for photovoltaic DC circuit.
✅ Plug‑In Modular Replaceable Module
Faulty cartridge can be replaced directly without dismantling main base, convenient and fast on‑site maintenance.
✅ Visual Status Indicator Window
Green for normal working status; color‑changed window reminds module failure, easy on‑site inspection without power‑off testing.
✅ Standard DIN‑Rail Mounting
Matches standard 35mm DIN rail, simple installation inside solar combiner box and distribution cabinets, save cabinet space.
✅ Compliant with IEC 61643‑31 Standard
Pass relevant type test, CE marked, suitable for global photovoltaic project application.
Technical Specifications
| Item | Parameter |
|---|---|
| Model | LMDS‑C40‑PV |
| Type | T2 Class Surge Protective Device |
| Poles | 2P (DC+, DC‑) |
| Maximum Continuous PV Voltage Ucpv | 500 Vdc |
| Nominal Discharge Current In | 20 kA (8/20μs) |
| Maximum Discharge Current Imax | 40 kA (8/20μs) |
| Voltage Protection Level Up | ≤2.0 kV |
| Standard | IEC 61643‑31 |
| Mounting | 35 mm DIN‑rail |
| Indicator | Visual status window (Green‑normal, fault‑alert) |
| Feature | Plug‑in replaceable protection module |
| Application | PV combiner box, solar DC side surge protection |
Application Scenarios
‑ Rooftop residential & commercial photovoltaic power systems
‑ On‑grid and off‑grid solar power plant DC combiner boxes
‑ Distributed PV project DC side over‑voltage protection
‑ Solar inverter front‑end lightning surge protection
‑ New‑energy DC distribution cabinets for photovoltaic projects
Our Advantages
PV‑oriented DC SPD design
Optimized for long‑term DC photovoltaic working condition, lower risk of aging and thermal failure compared with AC‑type SPD mis‑used on DC side.
Modular quick‑replace structure
Only replace failed plug‑in module instead of whole unit, reduce maintenance cost for solar sites.
Clear visual fault indication
Field technicians can judge SPD health status at a glance without measuring instruments.
Strict surge performance testing
Every batch undergoes surge current test, DC voltage aging test before delivery to guarantee stability for solar outdoor projects.
Complete technical documentation support
Provide dimension drawings, wiring diagrams and datasheets for solar project design and tender bidding. Fast overseas technical support.
Custom Solution
We provide project‑oriented custom solutions for LMDS‑C40‑PV PV surge protective device:
‑ OEM Brand Customization: Custom silk‑screen logo and model marking on modules for distributor branded resale.
‑ Project‑adapted variants: Cooperate to develop higher‑voltage DC SPD models for larger PV systems upon request.
‑ Export‑grade custom packing: Neutral carton or customer‑branded carton for sea‑shipping export.
‑ Project‑level technical service: Supply CAD drawings, test reports and datasheets for solar project certification and bidding documents.
‑ Large‑volume priority production: Priority production scheduling for solar integrator bulk orders.
Please inform your PV system DC voltage and required surge capacity, our engineers will confirm suitable SPD solution for you within 24 working hours.
FAQ
Q1: What is LMDS‑C40‑PV SPD used for?
Q2: What does the indicator window mean?
Q3: Can AC‑type SPD replace PV‑DC SPD?
Q4: Is this unit DIN‑rail mountable?
Q5: Can I replace only the failed module?
Q6: Do you support OEM private‑label service for distributors?
Q7: What technical documents can you provide?
Product Overview
Key Product Features
✅ Specially Designed for 500Vdc PV DC System
Optimized DC voltage withstand characteristic, stable performance under long‑term photovoltaic DC working voltage, avoid thermal runaway risk.
✅ T2 Surge Capacity: In 20kA, Imax 40kA
Strong surge discharge capability, effectively restrain lightning induced transient over‑voltage for solar DC loops.
✅ 2‑Pole Structure for DC+ and DC‑
Independent protection for positive and negative DC lines, complete surge protection for photovoltaic DC circuit.
✅ Plug‑In Modular Replaceable Module
Faulty cartridge can be replaced directly without dismantling main base, convenient and fast on‑site maintenance.
✅ Visual Status Indicator Window
Green for normal working status; color‑changed window reminds module failure, easy on‑site inspection without power‑off testing.
✅ Standard DIN‑Rail Mounting
Matches standard 35mm DIN rail, simple installation inside solar combiner box and distribution cabinets, save cabinet space.
✅ Compliant with IEC 61643‑31 Standard
Pass relevant type test, CE marked, suitable for global photovoltaic project application.
Technical Specifications
| Item | Parameter |
|---|---|
| Model | LMDS‑C40‑PV |
| Type | T2 Class Surge Protective Device |
| Poles | 2P (DC+, DC‑) |
| Maximum Continuous PV Voltage Ucpv | 500 Vdc |
| Nominal Discharge Current In | 20 kA (8/20μs) |
| Maximum Discharge Current Imax | 40 kA (8/20μs) |
| Voltage Protection Level Up | ≤2.0 kV |
| Standard | IEC 61643‑31 |
| Mounting | 35 mm DIN‑rail |
| Indicator | Visual status window (Green‑normal, fault‑alert) |
| Feature | Plug‑in replaceable protection module |
| Application | PV combiner box, solar DC side surge protection |
Application Scenarios
‑ Rooftop residential & commercial photovoltaic power systems
‑ On‑grid and off‑grid solar power plant DC combiner boxes
‑ Distributed PV project DC side over‑voltage protection
‑ Solar inverter front‑end lightning surge protection
‑ New‑energy DC distribution cabinets for photovoltaic projects
Our Advantages
PV‑oriented DC SPD design
Optimized for long‑term DC photovoltaic working condition, lower risk of aging and thermal failure compared with AC‑type SPD mis‑used on DC side.
Modular quick‑replace structure
Only replace failed plug‑in module instead of whole unit, reduce maintenance cost for solar sites.
Clear visual fault indication
Field technicians can judge SPD health status at a glance without measuring instruments.
Strict surge performance testing
Every batch undergoes surge current test, DC voltage aging test before delivery to guarantee stability for solar outdoor projects.
Complete technical documentation support
Provide dimension drawings, wiring diagrams and datasheets for solar project design and tender bidding. Fast overseas technical support.
Custom Solution
We provide project‑oriented custom solutions for LMDS‑C40‑PV PV surge protective device:
‑ OEM Brand Customization: Custom silk‑screen logo and model marking on modules for distributor branded resale.
‑ Project‑adapted variants: Cooperate to develop higher‑voltage DC SPD models for larger PV systems upon request.
‑ Export‑grade custom packing: Neutral carton or customer‑branded carton for sea‑shipping export.
‑ Project‑level technical service: Supply CAD drawings, test reports and datasheets for solar project certification and bidding documents.
‑ Large‑volume priority production: Priority production scheduling for solar integrator bulk orders.
Please inform your PV system DC voltage and required surge capacity, our engineers will confirm suitable SPD solution for you within 24 working hours.
FAQ
Q1: What is LMDS‑C40‑PV SPD used for?
Q2: What does the indicator window mean?
Q3: Can AC‑type SPD replace PV‑DC SPD?
Q4: Is this unit DIN‑rail mountable?
Q5: Can I replace only the failed module?
Q6: Do you support OEM private‑label service for distributors?
Q7: What technical documents can you provide?
Related Products
Contact Us
Have questions about our products or services? Our team is here to help you with any inquiries.