LMV1-C40 2P 385V Type 2 AC Surge Protective Device

Product Overview

The LMV1-C40 series is a Class II (Type 2) surge protective device dedicated to 385V AC low voltage distribution systems. It is installed in main distribution boards, sub-distribution boards and consumer units to absorb lightning-induced surges and switching transient overvoltage, safeguarding electrical appliances, meters and sensitive electronic equipment from surge damage.

This 2-pole model provides protection for both phase line and neutral line, with 20kA nominal discharge current and 40kA maximum discharge current, delivering reliable secondary lightning protection for building power systems. The integrated visual status window allows quick on-site inspection of SPD health status. Standard 35mm DIN rail mounting and compact modular design enable easy assembly and replacement in distribution enclosures. Compliant with IEC 61643-11 international standard, it is widely applied in residential buildings, commercial offices, industrial workshops and infrastructure power distribution systems.

Key Product Features

✅ Type 2 Secondary Lightning Protection Class II surge protection performance, designed for downstream distribution board installation, effectively suppresses residual lightning surges and switching transient overvoltage from upstream circuits.

✅ 2-Pole Full Circuit Protection Independent protection for phase line (L) and neutral line (N), provides complete common-mode and differential-mode surge protection for single-phase AC distribution circuits.

✅ 20kA In / 40kA Imax Surge Capacity 20kA nominal discharge current for repeated surge events, 40kA maximum discharge current for extreme lightning conditions. Voltage protection level Up ≤1.8kV, delivers low residual voltage to protect sensitive loads.

✅ Visual Status Indicator Window Green window indicates normal working condition; color-changed window alerts end-of-life failure, allows quick on-site status judgment without testing instruments.

✅ Standard DIN-Rail Modular Design Fits universal 35mm DIN rail, compact modular structure saves internal space of distribution boxes. Snap-on installation, no complex fixing work required.

✅ Low Voltage Protection Level Up ≤1.8kV protection level, effectively clamps surge voltage to a safe range, provides reliable protection for household appliances, electronic equipment and distribution components.

✅ IEC 61643-11 International Standard Manufactured and tested in full compliance with IEC 61643-11 international standard for low voltage surge protective devices, CE certified. Meets global AC distribution safety requirements.

Technical Specifications

Application Scenarios

• Residential building consumer units and household distribution surge protection
• Commercial office building and shopping mall sub-distribution boards
• Light industrial workshop and factory low voltage distribution systems
• Server room, communication equipment and sensitive electronic device protection
• Lighting circuits, socket circuits and general load surge protection
• Infrastructure and public facility power distribution lightning protection

Our Advantages

1. Full specification stock availability Complete pole configurations and voltage ratings in stock, support mixed batch orders for panel builders, with fast bulk shipment available.
2. Stable and reliable surge performance High-quality varistor core with stable clamping characteristics, low leakage current, long service life, avoid premature aging and failure under long-term working voltage.
3. Strict factory quality inspection Each batch undergoes surge current test, Uc withstand voltage test and insulation test before delivery to ensure reliable on-site performance.
4. Universal compatible dimensions Standard mounting dimensions and terminal layout, fully compatible with mainstream Type 2 AC SPDs on the market. Can be directly replaced without cabinet modification.
5. Complete technical documentation support Provide dimension drawings, wiring diagrams, selection guides and product datasheets to support project design and tender bidding. Fast overseas technical response.

Custom Solution

We provide project-oriented custom solutions for LMV1-C40 AC surge protective device:

• OEM Brand Customization: Custom silk-screen logo and model marking on product housing for branded resale.
• Specification Customization: Custom voltage ratings, pole configurations and discharge current specifications according to project requirements.
• Export-grade Custom Packing: Neutral carton, customer-branded packaging, seaworthy reinforced packing for long-distance sea transportation.
• Project-level Technical Support: Supply CAD drawings, test reports and certification documents for project bidding and local approval.
• Large-order Priority Production: Priority production scheduling for large-volume project orders to guarantee delivery lead time.

Share your required voltage rating, pole configuration and application scenario, our engineers will recommend the most suitable SPD solution within 24 working hours.

FAQ

Q1: What is Type 2 surge protective device used for?

A: Type 2 (Class II) SPD is installed at sub-distribution boards and consumer units, providing secondary lightning surge protection. It absorbs residual surges passing through Type 1 SPD and suppresses switching transient overvoltage, protecting downstream electrical and electronic equipment.

Q2: What does the indicator window mean?

A: Green window = normal working condition. When the protection module reaches end-of-life after multiple surge events, the window changes color to indicate that the SPD needs replacement.

Q3: Is this SPD DIN-rail mountable?

A: Yes, it fits standard 35mm DIN rail, which is the universal mounting standard for modular low-voltage distribution components.

Q4: What standard does LMV1-C40 comply with?

A: It complies with IEC 61643-11 international standard for low voltage surge protective devices, and holds CE certification.

Q5: Do you support OEM private label service for distributors?

A: Yes, we support custom logo and marking printing on the product, with a certain MOQ applied for OEM service.

Q6: Can the protection module be replaced separately?

A: This model adopts modular design. The core protection module can be replaced independently without removing the base terminal block, reducing maintenance cost.

Q7: What pole options are available for this series?

A: Standard options include 1P, 2P, 3P and 4P to match different types of AC distribution circuit requirements.

Package Content

1 × LMV1-C40 2P 385V Type 2 AC Surge Protective Device