Products

RST Electric presents 24V Blower Motor Resistor – a heavy-duty speed control resistor engineered for commercial vehicle cooling fan systems. Designed specifically for 24V electrical architectures found in trucks, buses, agricultural machinery, and construction equipment, this Cooling Fan 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 0.30Ω (±10%), it is optimized for low-speed fan operation in high-ambient-temperature environments. The unit comes pre-wired with 1.5–2.5mm² leads (150–300mm length) for direct installation, minimizing downtime during replacement. Housed in a flame-retardant, weather-resistant package, it withstands extreme vibration, temperature cycling (-55°C to +155°C), and high humidity conditions common in off-highway applications.

RST Electric presents TO220 Thick Film Power Resistor – a compact, high-performance resistor designed for power electronics requiring efficient thermal management and easy assembly. Housed in a standard TO220 plastic package with a metal mounting tab, this TO220 Power Resistor delivers 35W (PRT35) or 50W (PRT50) at 25°C case temperature when properly heatsink mounted. With a wide resistance range from 0.1Ω to 1MΩ and tolerances as tight as ±0.5%, it is ideal for switching power supplies, snubber circuits, power amplifiers, and voltage regulation applications. The molded plastic case provides high insulation resistance (>10GΩ) and withstands 1800VAC dielectric strength, while the non-inductive thick film construction ensures stable performance in high-frequency circuits.

RST Electric introduces TO247 Thick Film Power Resistor – a high-power, surface-mountable resistor designed for demanding power electronics requiring superior thermal management. Housed in a standard TO247 plastic package with an integral mounting tab, this TO247 Power Resistor delivers 100W at 25°C case temperature when properly heatsink mounted, making it ideal for high-power switching supplies, pulse loading circuits, power amplifiers, and snubber networks. With a wide resistance range from 0.2Ω to 1MΩ, tolerances as tight as ±1%, and a maximum working voltage of 700V, it offers exceptional versatility for industrial, automotive, and renewable energy applications. The molded plastic case provides high insulation resistance (>10GΩ) and withstands 1800VAC dielectric strength, while the non-inductive thick film construction ensures stable performance in high-frequency circuits.