Products

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. 

RST Electric presents the Aluminum Housed Braking Resistor – a high-performance power resistor engineered for industrial braking and energy dissipation applications. Featuring an extruded aluminum housing that acts as an efficient integral heatsink, this Aluminum Housed Resistor delivers superior power handling in a compact, rugged package. With power ratings from 60W to 2000W and resistance ranges from 0.1Ω to 10kΩ, it is ideal for variable frequency drives (VFDs), UPS systems, motor control, and heavy machinery. Available in ±1% and ±5% tolerances with TCR options from ±50 ppm/°C to ±350 ppm/°C, this Braking Resistor ensures reliable performance in continuous duty and peak power applications. 

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 introduces the Metal Clad Resistor – a low profile, high-performance wirewound resistor engineered for demanding braking and inverter/converter applications. Featuring a flexible design with exceptional pulse overload capability (10 × rated power for 5 seconds), this Metal Clad Resistor delivers reliable energy dissipation in compact installations. With power ratings from 150W to 600W (up to 1200W when heatsink mounted) and resistance ranges from 2.2Ω to 1.1kΩ, it is ideally suited for dynamic braking circuits, motor drives, and power conversion systems. Standard 600V cables simplify integration, while the low profile design enables installation in space-constrained equipment. Available in ±5% tolerance with low TCR (≤ ±150 ppm/°C), this Wirewound Metal Clad Resistor ensures stable performance under repeated pulse conditions.