Products

RST Electric presents a compact, high-performance Braking Resistor Box engineered for industrial automation and process control applications. Featuring ceramic tubular resistor elements and forced fan cooling, this Braking Resistor Box delivers rapid dynamic response and reliable energy absorption for variable frequency drives (VFDs), servo motors, and industrial machinery. With power ratings from 1kW to 40kW and voltage ranges from 220V to 690V AC, this solution is ideal for factory automation, material handling, HVAC systems, and test equipment. Designed for indoor installation (IP2X) with modular construction, this Braking Resistor Box ensures easy integration, enhanced safety, and long service life in demanding industrial environments

RST Electric introduces the heavy-duty Braking Resistor for Mining Truck – a mission-critical component engineered for the world's most demanding mining and drilling environments. Designed specifically for underground mining vehicles, electric haul trucks, and oil drilling rigs, this Braking Resistor for Mining Truck delivers unparalleled reliability under extreme vibration, shock, and thermal stress. With power ratings from 404kW to 2000kW and voltage ranges from 380V to 1140V AC, it handles the intense regenerative braking energy generated by massive electric drives on steep mine grades. Featuring SUS304 stainless steel or alloy wire elements, forced air cooling, and rugged IP-rated enclosures, this Mining Truck Braking Resistor ensures safe, consistent deceleration and long-term durability in the harshest operating conditions.

RST Electric presents a high-performance Power Wirewound Resistor engineered for demanding power applications. Featuring a precision-wound element on a high-purity ceramic tube with silicone coating, this Wirewound Resistor delivers excellent stability, high-temperature operation, and inherent non-inductive characteristics. With power ratings from 50W to 10kW and resistance ranges from 0.1Ω to 10kΩ, it is ideal for power supplies, motor drives, medical equipment, and renewable energy systems. Available in ±1% and ±5% tolerances with TCR options from ±50 ppm/°C to ±350 ppm/°C, this High Power Wirewound Resistor ensures reliable performance in both continuous and pulsed load applications. 

RST Electric presents the Vitreous Enamel Resistor – a rugged, high-reliability power resistor engineered for industrial and commercial applications requiring exceptional environmental protection. Featuring a precision-wound element on a ceramic tube, sealed under a fused vitreous enamel coating, this Vitreous Enamel Resistor delivers superior resistance to moisture, thermal shock, and mechanical stress. With power ratings from 8W to 500W and resistance ranges from 0.1Ω to 91kΩ, it is ideal for power supplies, motor drives, test equipment, and industrial controls. Available in both fixed (RX20) and adjustable (RXG) configurations, this Enamel Coated Wirewound Resistor ensures long-term stability in the most demanding operating environments.

RST Electric presents Adjustable Wirewound Resistor – a versatile power resistor designed for applications requiring circuit tuning, custom resistance values, or equipment calibration. Featuring a precision-wound element on a ceramic tube with durable silicone coating and an adjustable lug, this Adjustable Power Wirewound Resistor allows fine-tuning from 10% to 90% of the full resistance value. With power ratings from 50W to 2500W and resistance ranges from 0.1Ω to 10kΩ, it is ideal for motor drives, power supplies, test equipment, and industrial controls where flexibility and reliability are essential. Available in ±5% and ±10% tolerances with low TCR (≤300 ppm/°C), this Tubular Wirewound Adjustable Resistor delivers consistent performance in both continuous and intermittent duty applications.

RST Electric introduces the classic Wirewound Rheostat – a manually adjustable power resistor designed for applications requiring smooth, continuous variation of current or voltage. Featuring a rugged ceramic core with exposed wirewound element and a sliding contact arm, this Wirewound Rheostat delivers reliable performance in motor speed control, lighting dimming, laboratory experiments, and industrial equipment calibration. With power ratings from 25W to 500W and resistance ranges from 1Ω to 5kΩ (tolerance ±5%), it provides a simple, cost-effective solution for hands-on adjustment in educational, industrial, and maintenance environments.