LSP provides customized Isolator Switch solutions for different application scenarios, including solar PV systems, combiner boxes, and energy storage applications. Beyond Isolator Switches, LSP also manufactures DC SPDs, DC fuses, and DC MCBs, enabling you to source complete DC protection components from one reliable manufacturer and simplify system integration.
LSP provides a complete range of Isolator Switch solutions designed for safe and reliable electrical isolation across AC and DC applications. Our DC Isolator Switches support up to 1200V DC, safely interrupting hard-to-quench DC arcs under DC-PV1 / DC-PV2 utilization categories, while our AC Isolator Switches deliver dependable load isolation up to 800V AC.
Designed for photovoltaic systems, battery storage, and DC power applications with reliable high-voltage isolation.
From product consultation and technical confirmation to manufacturing, quality inspection, and final delivery, LSP manages every stage of the Isolator Switch production process with strict quality control and professional expertise.
With advanced manufacturing capabilities, reliable production scheduling, and experienced teams, we help you receive consistent products on time and reduce sourcing risks for long-term cooperation.
LSP select premium silver-copper composite contacts and flame-retardant, UV-resistant housing materials, subjecting every unit to critical performance checks—such as mechanical endurance, high-voltage insulation, and IP ingress testing.
Explore LSP Isolator Switch technical specifications, manufacturing processes, and quality assurance systems designed for reliable electrical isolation.
| Comparison Item | DC Isolator Switch (LDS) | AC Isolator Switch (LAS) |
| Current Type | DC (Direct Current) | AC (Alternating Current) |
| Main Standards | IEC/EN 60947-3, AS 60947.3 | IEC/EN 60947-3 |
| Utilization Categories | DC-PV1 / DC-PV2 | AC-21A/B, AC-22A/B, AC-23A/B |
| Maximum Voltage | Up to 1200V DC | Up to 800V AC |
| Number of Poles | 4 Poles | 3 Poles / 4 Poles |
| Rated Current Range | ≤32A | 16A–40A |
| Protection Degree | IP20 / IP66 outdoor models available | IP20 |
| Main Applications | Solar PV systems, renewable energy, and DC energy storage systems | Power distribution, industrial equipment, and building electrical systems |
Yes, we welcome sample orders to test and check the quality.
We provide 1 years limited warranty for the products. Please feel assured.
We accept T/T and Paypal.
Please contact us to discuss the details for your specific market:
Email: info@lsp.global
WhatsApp: +86-18968826885
Unlike circuit breakers that provide automatic protection against overloads and short circuits, isolator switches are mainly used for manual isolation and safe maintenance operations.
Ensure safe maintenance operations
Prevent accidental energization of equipment
Provide reliable circuit isolation
Improve electrical system safety
The internal contacts connect the power supply and load circuit
Electrical current flows normally through the system
The contacts physically separate
The circuit is disconnected
Maintenance personnel can safely work on the equipment
Strong contact materials
Reliable insulation structures
Arc suppression technology
Mechanical locking mechanisms
Power distribution systems
Industrial machinery
Control panels
Commercial buildings
HVAC systems
Motor control applications
AC-21A/B: Switching resistive loads
AC-22A/B: Switching mixed resistive and inductive loads
AC-23A/B: Switching motor loads
Reliable AC circuit isolation
Safe maintenance operation
High mechanical durability
Suitable for industrial electrical systems
Solar PV systems
Battery energy storage systems
DC distribution systems
EV charging systems
Renewable energy installations
Key advantages:
Safe DC isolation
Fast arc extinguishing performance
High voltage DC capability
Reliable outdoor operation
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