Braking Resistor Box

The Braking Resistor Box from RST Electric is a purpose-engineered solution for dynamic braking applications in modern industrial facilities. At its core, this Braking Resistor Box utilizes high-quality ceramic tubular resistor elements, selected for their excellent thermal stability, high-temperature resistance, and cost-effective performance in repetitive braking cycles. Each unit is equipped with a forced fan cooling system that maintains optimal operating temperatures during continuous duty, ensuring consistent braking performance and extended component life.

The modular, compact enclosure (IP2X rated) is designed for easy wall-mounting in control cabinets or machine enclosures, with pre-drilled mounting brackets and accessible termination points for quick field wiring. Electrical performance is optimized for rapid dynamic response, making this product perfectly suited for VFD-controlled applications where precise speed regulation and fast deceleration are critical.

With duty cycles up to 20% (ED=10-20%) and power ratings covering the most common industrial requirements, this Braking Resistor Box delivers reliable energy dissipation while minimizing electromagnetic interference (EMI) to comply with modern drive system requirements. As a trusted Braking Resistor Box manufacturer in China, RST Electric combines over 10 years of power resistor expertise with application-specific engineering to provide solutions that enhance machinery performance and operator safety.

Technical Specification

Product Features

1.High Reliability & Long Service Life – Ceramic tubular resistor elements provide excellent thermal stability and resistance to thermal shock, ensuring consistent performance over thousands of braking cycles .

2.Rapid Dynamic Response – Optimized element design and low inductance construction enable fast energy absorption, critical for precise VFD and servo motor control .

3.Enhanced Safety Design – IP2X enclosure protects against accidental contact with live parts; integrated thermal protection options available for over-temperature shutdown .

4.EMI/Noise Compliance – Engineered to minimize electromagnetic interference, supporting overall system EMC performance and compliance with CE requirements .

5.Modular & Easy Integration – Compact, wall-mountable design with pre-drilled brackets and accessible terminals simplifies installation in control cabinets or machine frames .

6.Forced Fan Cooling – Integrated fans maintain optimal operating temperatures even during continuous duty cycles, preventing thermal derating .

7.Wide Power Coverage – Available from 1kW to 40kW, covering the most common industrial braking applications from small servo drives to medium VFDs .

8.Cost-Effective Solution – Ceramic tubular technology offers an excellent balance of performance and economy for general-purpose industrial applications .

9.Quiet Operation – Optimized fan selection ensures effective cooling with minimal acoustic noise in factory environments .

10.Customizable Configurations – Duty cycles, power ratings, termination types, and enclosure colors available to meet specific OEM requirements .

Product Applications

Drawing and dimensions

Package and shipment

RST Electric ensures safe and secure delivery of every Braking Resistor Box:

● Individual Packaging: Each unit is wrapped in protective film and secured with strapping.

● Pallet Mounting: Multiple units can be consolidated on export pallets with foam cushioning.

● Carton Packaging: Smaller units (≤12kW) are double-boxed with foam inserts for added protection.

● Crating Options: For larger units or international shipments, custom plywood crates are available.

● Documentation: Comprehensive shipping documents include packing lists, inspection reports, and customs clearance support.

● Freight Options: We offer FCL sea freight, LCL consolidation, air freight, or express courier services.

All units undergo final inspection and electrical testing before packaging to ensure they arrive in perfect working condition.

Direct supply from the source factory

We are a local and legitimate manufacturer in China, specializing in the research and manufacturing of Braking Resistor Box. We are not a trade intermediary. We can fully control the entire process from design, ceramic component procurement, production to testing, ensuring stable product quality. By eliminating the middle links, we offer transparent factory direct supply prices with no hidden charges, allowing customers to balance high quality and low cost.

Quality is fully controllable throughout the process

We have an ISO 9001-certified factory and a dedicated assembly line for ceramic tubular resistors. Before each product leaves the factory, 100% electrical testing and internal thermal verification are completed to ensure the cooling effect and uniformity of heat dissipation. Our experienced engineering team specializes in variable frequency drive braking and industrial automation, and can precisely adapt to various industrial scenarios.

Global Supply Experience

We have become a trusted supplier for global machinery manufacturers and system integrators. Our products are exported to 40+ countries, covering industrial powerhouses such as Germany, Italy, the United States, Japan, and South Korea. We have accumulated rich experience in fields like factory automation and material handling, and can precisely meet customer needs.

Comprehensive Customization Service

We offer comprehensive customization services for Braking Resistor Boxes. The power range is 1kW to 40kW, and it can be upgraded as needed. The voltage support includes 220V to 690V AC and customized DC. The working cycle can be adjusted from 10% to 100%. The resistance elements, wiring methods, casing, and installation can all be customized to meet the requirements of different industrial equipment.

Full-cycle after-sales support

Standard specification delivery period: 10-20 working days; Customized model delivery period: 20-30 working days. Complete technical documents are provided. 18-month warranty is offered, including remote fault diagnosis and spare parts delivery. Integration technical support with mainstream inverters such as Siemens and ABB can be provided, ensuring full protection throughout the process.