Overview
High current DC isolator switches engineered for safe isolation of DC power systems in renewable energy, industrial, and traction applications. These isolators provide reliable load-break and isolation functions with robust construction for demanding environments.
Key Features
- High current ratings up to 4000A with excellent thermal performance
- Quick-make, quick-break mechanism for positive switching action
- Arc extinguishing with magnetic blowout for DC load breaking
- Modular design for series-pole configurations
- Padlockable operating handle for LOTO (lockout/tagout) safety
- Optional auxiliary contacts for remote indication and interlocking
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage | 600V DC to 3000V DC |
| Rated Current | 100A to 4000A |
| Isolation Resistance | ≥ 1000 MΩ (at 1000V DC) |
| Operating Temperature | -25°C to +70°C |
| Mechanical Endurance | > 10,000 operations |
| Protection Class | IP20 (with enclosed options to IP65) |
| Mounting Type | Panel-mount, rack-mount, DIN rail |
| Auxiliary Contacts | 2 NO + 2 NC (optional, for interlocking) |
| Standards | IEC 60947-3, IEC 61439, GB/T 14048.3 |
Applications
- Solar PV string and array isolation
- Battery energy storage systems (BESS)
- EV charging station maintenance isolation
- Railway traction substation DC switchgear
- Electroplating and industrial DC process power
Contact us for detailed specifications and custom solutions.
