High Power Inrush Current Resistor with aluminum for Servo Drives
Rated Power: 1.2K~6KW / Custom
Resistance Tolerance: ±1% / ±5%
Housing: Anodized Aluminum Shell
Mounting: Cooling plate or screw mount
Custom Design: Supported
Description
Product Overview
This high-power inrush current resistor is specially designed for servo drive and inverter systems, helping to protect circuits by limiting surge current at startup.
With an aluminum shell for efficient heat dissipation and a compact size for easy installation, it offers excellent overload capacity, high insulation, and stable performance.
Available in multiple resistance values and power levels, and supports customization based on application needs.
🔹 Features of Inrush Current Resistor
- Limits inrush current during power-up
- Aluminum housing for enhanced heat dissipation
- Compact and robust structure for industrial environments
- High overload capacity and long-term stability
- RoHS compliant and flame-retardant encapsulation
Dimension
VFD Power vs. Braking Resistor Power Selection Table (General Reference)
| VFD Power (kW) | Recommended Resistor Power (W) | Recommended Resistance (Ω) | Notes |
|---|---|---|---|
| 0.75 kW | 100–200 W | 100–150 Ω | Light-duty, fans |
| 1.5 kW | 200–400 W | 75–100 Ω | – |
| 2.2 kW | 300–600 W | 60–80 Ω | Standard braking |
| 3.7 kW | 600–800 W | 40–60 Ω | – |
| 5.5 kW | 800–1000 W | 30–50 Ω | Common industrial use |
| 7.5 kW | 1.0–1.5 kW | 20–40 Ω | – |
| 11 kW | 1.5–2.0 kW | 15–25 Ω | – |
| 15 kW | 2.0–3.0 kW | 10–20 Ω | – |
| 18.5 kW | 3.0–4.0 kW | 8–15 Ω | Heavy-duty applications |
| 22–30 kW | 4.0–6.0 kW | 6–10 Ω | Large equipment |
| 37–45 kW | 6.0–8.0 kW | 4–8 Ω | Cranes, hoists |
| ≥55 kW | ≥10 kW | 2–5 Ω | May use multiple resistors in parallel |
Typical Applications of Inrush Current Resistor
Industrial Automation Equipment
Variable Frequency Drive (VFD) Braking Systems
Elevators and Hoisting Machinery
CNC Machine Tools
HVAC Control Systems
- Learn more about how inrush current resistors work in power applications.
- Looking for smaller power models? Check out our Metal clad Chassis Mount Dynamic Braking Resistor
