China Portable Load Bank Manufacturer, Supplier, Factory

RST Electric presents the Vertical Ceramic Wirewound Resistor – a space-saving power resistor designed for high-density PCB layouts and chassis mounting. Featuring a rectangular ceramic housing with radial leads, this Vertical Ceramic Resistor stands upright, minimizing board footprint while delivering excellent heat dissipation and mechanical stability. With power ratings from 1W to 20W and resistance values ranging from 0.1Ω to 100kΩ (wirewound/metal film variants), it suits applications including switch-mode power supplies, motor drives, home appliances, and industrial controls. Available in standard vertical (SQM) and special wide-body (WS/WB) configurations, this Radial Lead Power Resistor meets rigorous quality standards including solderability, dielectric withstand, temperature cycling, and endurance testing. 

RST Electric presents Non-Linear Load Bank – a precision power testing solution designed for applications requiring realistic simulation of complex electrical loads. Combining resistive (R), capacitive (C), and inductive (L) elements in a single unit, this RCD Load Bank enables accurate emulation of power factors from 0.65 to 1.0, making it ideal for testing inverters, UPS systems, AC power sources, and renewable energy equipment. With three-phase independent adjustment, 0.1kW/0.1kVA load stepping, and ±3% loading accuracy, it delivers exceptional flexibility for R&D laboratories, quality assurance, and production testing. The unit features a touchscreen local interface with real-time data logging and curve display, plus RS485/Modbus-RTU remote control via PC software. Housed in a compact, mobile enclosure with forced air cooling and <65dB noise operation, it suits indoor laboratory and manufacturing environments.

RST Electric presents the Neutral Earthing Resistor – a critical safety component engineered for medium-voltage power systems requiring controlled fault current management. Designed to protect personnel and assets in generator neutrals, transformer star points, and industrial distribution networks, this Neutral Earthing Resistor limits earth fault currents to predetermined safe levels while maintaining system continuity. Covering rated system voltages from 6.3kV to 35kV and fault currents from 10A to 2000A, it accommodates diverse applications including power plants, offshore platforms, renewable energy farms, and mining operations. Available with time ratings from 5 to 60 seconds and resistance values from 1Ω to 9999Ω, this Earthing Resistor features corrosion-resistant stainless steel grid elements (SUS304/SUS430) housed in rugged enclosures suitable for indoor or outdoor installation. Compliant with IEEE32 and designed to meet IEC standards, it undergoes rigorous impulse voltage testing with BIL ratings up to 170kV. 

RST Electric delivers a high-capacity 300kW 380V Load Bank built for rigorous AC power system validation. Designed for large-scale generator testing, UPS commissioning, and industrial power applications, this 300kW 380V AC Load Bank offers precise resistive loading with advanced step control and multiple protection features. Its robust construction and forced air cooling enable continuous operation under full load, while the intuitive HMI and remote communication interfaces (RS485/Modbus) provide flexible control. Trust RST Electric for reliable, custom-engineered load bank solutions backed by years of manufacturing expertise. Request a quote today for tailored voltage and enclosure options.

RST Electric presents the Chassis Mount Power Resistor – a high performance aluminum housed resistor engineered for demanding industrial applications. Featuring a metal aluminum crust with excellent heat radiation properties, this Chassis Mount Resistor is designed for cooling plate installation and long-term operation in harsh environments. With power ratings from 5W to 500W and resistance ranges from 0.1Ω to 10kΩ, it delivers reliable performance in power supplies, variable frequency drives (VFDs), elevators, professional audio, and high-end equipment. Available in ±1%, ±2%, ±5%, and ±10% tolerances with TCR from ±100 ppm/°C to ±300 ppm/°C, this Aluminum Housed Power Resistor undergoes rigorous testing including temperature cycling, load life humidity, vibration, and non-flammability verification.

RST Electric presents 12V Blower Motor Resistor – a dedicated speed control resistor designed for automotive HVAC (heating, ventilation, and air conditioning) systems. Engineered specifically for 12V vehicle electrical systems, this Blower Motor Resistor delivers reliable fan speed regulation with a built-in 240°C thermal fuse for over-temperature protection. With a power rating of 50W and resistance of 0.15Ω (±10%), it is optimized for low-speed fan operation in passenger cars, commercial vehicles, and off-highway equipment. The unit comes pre-wired with 1.5–2.5mm² leads (150–300mm length) for direct plug-and-play installation, simplifying replacement and assembly. Housed in a flame-retardant, weather-resistant package, it withstands harsh under-dash environments, including temperature extremes, vibration, and humidity.