Description
ABB NSB204-502W (3AXD50000032687) Brake Resistor
Technical Specifications
- Product Model: NSB204-502W, Part No. 3AXD50000032687
- Brand: ABB
- Warranty: One Year
- Resistance Value: 50 Ω
- Continuous Power Rating: 204 W
- Operating Temperature: -40°C ~ +40°C (Free air cooling)
- Storage Temperature: -40°C ~ +85°C
- Protection Class: IP20, cabinet mounting type
- Accuracy Class: Resistance tolerance ±10%
- Overload Capacity: Short-time peak power absorption for drive braking energy; thermal cut-off protection
- Application Target: ABB ACS series variable frequency drives
- Connection: Screw terminal wiring
- Dimensions: Standard wirewound braking resistor housing size
Product Overview
The NSB204-502W (3AXD50000032687) is an ABB dedicated external wirewound braking resistor, designed for variable frequency drives to consume regenerative energy generated by motors during deceleration, stopping and lowering loads. It prevents DC bus overvoltage faults caused by regenerative feedback energy. The resistor features robust wirewound construction and built-in thermal protection to avoid overheating damage. Drive technicians, panel builders and plant maintenance teams adopt this unit for crane, elevator, conveyor and hoist machinery equipped with ABB inverters. It enables fast controlled braking and improves equipment operational safety for high-inertia loads.
Application Scenarios
- Material Handling Conveyors & Stackers: Dissipate regenerative energy during frequent start-stop and speed reduction cycles.
- Crane, Hoist and Lifting Equipment: Stabilize DC bus voltage while lowering heavy loads to avoid drive overvoltage trips.
- Packaging & Printing Machinery: Achieve rapid motor stopping and precise positioning control.
- Metallurgical Processing Equipment: Support repeated dynamic braking for high-inertia rotating machinery driven by ABB ACS inverters.
Reviews
There are no reviews yet.