Anyhz aluminum shell braking resistors provide reliable dynamic braking for variable frequency drives (VFDs) and servo systems from 50W to 3000W. These wirewound resistors convert regenerative energy into heat during motor deceleration, preventing VDC bus overvoltage and enabling controlled, rapid stopping of high-inertia loads.

Designed for industrial automation, CNC machine tools, cranes, elevators, and high-inertia machinery, our braking resistors feature golden anodized aluminum shells for superior heat dissipation, allowing continuous operation at 10% duty cycle with 100% braking torque. The robust construction withstands harsh factory environments including vibration, dust, and temperature extremes.

• Superior Heat Dissipation: Golden aluminum shell with heat sink design, 30% better cooling than steel enclosures
• High Power Density: 50W-3000W range covers applications from small servo drives to large crane systems
• Wide Voltage Compatibility: 220V, 380V, 440V AC systems with optimized resistance values
• Industrial Durability: Vibration resistant, weatherproof, non-combustible inorganic packaging
• Easy Installation: Multiple terminal options, compact size, panel or chassis mount
• Long Service Life: High overload capacity, low resistance drift, maintenance-free operation
• Cost Effective: 20-30% lower cost than branded braking units with comparable performance

220V System Braking Resistor Selection (100% Braking Torque, 10% Duty Cycle)

380V System Braking Resistor Selection (100% Braking Torque, 10% Duty Cycle)

• Resistance Range: 2Ω to 400Ω (custom values available)
• Power Range: 50W to 3000W (higher power by parallel connection)
• Voltage Rating: AC 220V, 380V, 440V (DC bus voltage dependent)
• Resistance Tolerance: ±5% standard, ±1% available
• Temperature Coefficient: ±50 ppm/°C
• Operating Temperature: -55°C to +275°C
• Insulation Resistance: >1kΩ (1000VDC)
• Dielectric Strength: 2000VAC, 1 minute
• Protection Class: IP54 with terminal covers
• Duty Cycle: 10% ED standard, 25% and 40% ED available
• Cooling: Natural convection (standard), forced air (high duty)

Bottom line: Anyhz aluminum shell braking resistors offer the optimal combination of heat dissipation, durability, and safety for industrial VFD applications. Unlike cheap steel or ceramic alternatives, they withstand factory conditions while providing reliable braking performance.

★★★★★ 4.8/5 based on 423 braking resistor installations

Use our selection tables based on VFD power rating and input voltage (220V or 380V). The tables provide optimal resistance values for 100% braking torque at 10% duty cycle --suitable for most applications. For high-duty cycles (cranes, elevators), select the next higher power rating or contact us for 25%/40% ED versions.

Duty cycle (ED) is the ratio of braking time to total cycle time. 10% ED means 6 minutes braking per hour--typical for CNC, pumps, and fans. 25% ED means 15 minutes braking per hour for cranes and hoists. 40% ED means 24 minutes braking per hour for extreme applications like elevators or test stands.

Surface temperature reaches 200-250 °C at full load--hot enough to cause burns but normal for braking resistors. The golden aluminum shell dissipates heat efficiently, but maintain 100mm clearance from heat-sensitive components and ensure adequate ventilation.