Dehler
Engineered for reliability in high and low voltage environments.








A Single Pole Isolator Switch is a critical safety device designed to disconnect a specific part of an electrical circuit from the main power supply. Unlike circuit breakers that trip during overloads, isolators provide a visible, physical gap in the conductor, ensuring that downstream maintenance can be performed with zero risk of accidental energization.
With years of field experience in high-voltage engineering, Dehler Technology integrates 20+ years of collective expertise into every switch. Our components are tested under extreme thermal and mechanical stresses to ensure they meet the rigorous standards of global power utilities.
The shift toward Smart Grids and renewable energy integration has increased the demand for modular, IoT-ready isolators. Procurement officers now prioritize "Information Gain"—seeking manufacturers who provide deep technical documentation, lifecycle analysis, and environmental resilience data.
Dehler Technology Co., Ltd., established in 2016, is a premier technology enterprise specializing in R&D, production, and service for the high and low voltage power equipment industry. Strategically located in the Yanpan Economic Development Zone, Yueqing City, we operate multiple specialized divisions for electrical equipment and transformers.
Our expansive product portfolio includes high & low voltage switchgear, prefabricated substations, indoor & outdoor vacuum circuit breakers, and our flagship single pole isolator switches. We serve vital sectors such as railway electrification, steel mills, wind power generation, and shipbuilding, ensuring precise and environmentally friendly power distribution.
Why global enterprises partner with Dehler for large-scale power infrastructure projects.
Located in Yueqing—the "Electrical Capital of China"—we leverage a hyper-local supply chain that reduces lead times and costs without compromising on raw material quality.
Our engineers provide "Information Gain" through rapid prototyping, adapting isolator switch designs to meet specific local grid codes like IEC, ANSI, or AS/NZS standards.
We strictly adhere to national and international quality systems. Every single-pole switch undergoes rigorous partial discharge and mechanical endurance testing before export.
Our production lines are optimized for energy efficiency, reflecting the global demand for "Green Switches" in the era of Carbon Neutrality.
From macro-grid isolation to micro-circuit safety.
In high-load environments like steel mills and petroleum refineries, our single-pole isolators serve as the primary safety lock-out point. They are engineered to withstand corrosive atmospheres and high ambient temperatures.
Solar and wind farms require DC and AC isolation switches that can handle fluctuating loads. Dehler provides customized solutions for combiner boxes and inverter stations, ensuring safe maintenance cycles for green energy assets.
The electrical industry is currently witnessing a paradigm shift. As a leading exporter, Dehler Technology tracks these trends to provide our clients with future-proof hardware:
1. Miniaturization: Space in urban substations is a premium. We are developing compact single-pole switches that offer the same dielectric strength in 30% less volume.
2. Arc Suppression Materials: Using advanced silver-nickel and silver-tin-oxide contact materials to improve electrical lifespan and reduce maintenance frequency.
3. IoT Connectivity: Modern procurement demands switches that can communicate status via RS485 or Modbus protocols to centralized SCADA systems.
Addressing the core concerns of electrical engineers and procurement managers.
Over the years, Dehler has earned widespread acclaim through a systematic and standardized quality management system.
Supporting high-performance power systems with specialized accessories.








Based in China, with a global perspective, Dehler Technology sincerely collaborates with partners from all walks of life. Whether you need custom OEM solutions for single pole isolators or complete switchgear sets, our team is ready to deliver.