A photovoltaic DC disconnect switch (LMDG) is an electrical protection device specifically designed for solar photovoltaic systems. Its core function is to achieve reliable power supply switching and electrical isolation in DC circuits.

·It possesses stronger arc-extinguishing capabilities, quickly severing the arc when interrupting large currents.
·It utilizes high-insulation-strength materials, withstanding creepage and breakdown risks under high voltage.
·The outdoor model features IP66 waterproof and dustproof rating, adapting to the outdoor environment of photovoltaic power plants.

Rated Operating Specifications: Supports 1500V DC ultra-high withstand voltage, switchable 32A rated switching current, meeting the DC-side switching requirements of medium and high power photovoltaic systems.

✅ Electrical Pole: 4P (four poles), capable of simultaneously disconnecting all electrodes of the solar module, achieving full-pole isolation and avoiding the risk of residual charge on a single pole.

✅ Rated Impulse Withstand Voltage: Uimp=8kV, strong surge and lightning protection capabilities, adaptable to complex outdoor power grid environments.

✅ Superior Breaking Capacity: Load breaking capacity up to 8 times the rated current, fast breaking response, good arc extinguishing effect, also suitable for the isolation requirements of motor equipment.

II. Multiple Safety Protection Designs for Enhanced Reliability in Outdoor Use

1. High-Strength Material and High Protection Rating
The outer shell is made of flame-retardant PC material, possessing high temperature resistance, acid and alkali corrosion resistance, and excellent insulation performance, eliminating the risk of leakage and fire from the source.
The protection rating reaches IP66, completely dustproof, and can withstand strong water spray and heavy rain immersion, suitable for RVs, ships, outdoor photovoltaic brackets, and other humid/dusty environments.
2. Leakage Current Prevention + Anti-tamper design
No input/output leakage current in the disconnected state, completely cutting off circuit connection and ensuring personal safety during operation and maintenance.
The switch knob has a built-in anti-tamper function to prevent unauthorized operation and improve security.
3. Password lock-type mechanical anti-misoperation
After manually rotating to disconnect, pulling out the latch will mechanically lock it firmly in the disconnected state, physically preventing accidental closing.
Unlocking requires reversing the latch operation, which is simple to operate and prevents theft and accidental touch, suitable for the safety requirements of mobile scenarios such as ships and RVs.
III. Easy installation without wiring, adaptable to multiple scenarios and rapid deployment
Standard photovoltaic connectors are included, eliminating the need for additional crimping and wiring. Directly plug and unplug into the photovoltaic module cable, significantly saving installation time.
A wall-mounting kit is included, allowing flexible hanging on walls, trees, photovoltaic brackets, wooden boards, and any other flat surface. Installation is unrestricted, suitable for mobile carriers such as RVs and ships, as well as outdoor fixed photovoltaic systems.
Compact overall structure, small size, does not occupy too much installation space, suitable for both mobile and fixed scenarios.
IV. Wide range of application scenarios, universal for all DC systems
Covering mobile + fixed, off-grid + All types of grid-connected DC power supply systems, with core application scenarios including:

✅ Mobile DC power systems for RVs, ships, yachts, etc.

✅ Off-grid and grid-connected solar photovoltaic systems for residential/commercial use

✅ Various industrial/residential DC power supply systems and DC side of photovoltaic combiner boxes

✅ Other 1500V DC and below DC circuits with high withstand voltage and high protection requirements