In modern industrial automation systems, efficient motor control and safe deceleration are essential for protecting equipment and ensuring operational stability. The Siemens JJY:023422620001 Braking Resistor and Siemens JJY:023424020001 Braking Resistor are designed to work with Siemens SINAMICS drive systems, providing reliable braking energy dissipation in demanding industrial environments.
As a professional global supplier of industrial automation components, HKXYTECH offers genuine Siemens braking resistors with fast international delivery and technical support for automation integrators, maintenance teams, and engineering companies worldwide.
Product Overview
Braking resistors are essential accessories for frequency converters and servo drives. During rapid deceleration or stopping, the motor operates in generator mode, feeding energy back into the drive’s DC link. A braking resistor safely dissipates this excess energy as heat to prevent overvoltage faults and protect the drive system.
The Siemens JJY series braking resistors are designed for compatibility with SINAMICS G120 / PM240-2 power modules, providing stable braking performance for industrial motors.
Key Models Covered
Siemens JJY:023422620001
- Resistance: 25 Ω
- Rated power: 22 kW
- Designed for PM240-2 Power Module
- Converts regenerative energy into heat during motor braking
- Dimensions approx.: 220 × 180 × 470 mm
Siemens JJY:023424020001
- Higher-capacity braking resistor model
- Often configured using multiple resistor units in parallel
- Suitable for higher-power inverter applications in SINAMICS drive systems
Key Features
1. Efficient Energy Dissipation
Braking resistors safely dissipate excess DC-link energy generated during motor deceleration, preventing drive overvoltage and improving system stability.
2. Designed for SINAMICS Drive Systems
These resistors are specifically engineered for Siemens SINAMICS G120 / PM240-2 power modules, ensuring compatibility and reliable operation.
3. Thermal Protection
Each braking resistor includes a temperature switch, helping prevent thermal overload and protecting the system from potential damage.
4. Industrial-Grade Durability
Heavy-duty construction allows operation in demanding environments such as manufacturing plants, conveyor systems, and heavy machinery.
Typical Applications
Siemens braking resistors are widely used in industries where precise motor control and rapid deceleration are required:
- Industrial automation systems
- Material handling and conveyor equipment
- CNC machinery
- Packaging lines
- Steel and metal processing plants
- Hoists, cranes, and elevators
Why Choose HKXYTECH
HKXYTECH is a trusted supplier of global industrial automation brands, specializing in genuine components for process control and factory automation.
Advantages of sourcing from HKXYTECH:
- 100% genuine industrial automation products
- Competitive global pricing
- Fast international shipping (DHL / FedEx / UPS)
- Professional technical support
- Long-term supply for maintenance and retrofit projects
HKXYTECH supports a wide range of brands including Siemens, Honeywell, ABB, Emerson, Pepperl+Fuchs, Hirschmann, and Yokogawa, serving customers across energy, chemical, manufacturing, and infrastructure sectors.
FAQ – Siemens Braking Resistors
1. What is the purpose of a braking resistor in a drive system?
A braking resistor dissipates excess electrical energy generated when a motor decelerates. This prevents DC-link overvoltage and protects the frequency converter.
2. Which drives are compatible with JJY:023422620001?
This resistor is designed for Siemens SINAMICS G120 drives with PM240-2 power modules.
3. Why are braking resistors sometimes installed outside the control cabinet?
Braking resistors generate heat during operation. Installing them outside the cabinet improves heat dissipation and reduces cooling requirements for the control system.
4. What happens if a braking resistor is overloaded?
Overload can trigger the built-in temperature switch, shutting down the drive system to prevent damage.
5. Can multiple braking resistors be connected together?
Yes. Some applications use multiple resistors in parallel to achieve higher power dissipation capacity.
6. How do I select the correct braking resistor?
Selection depends on:
- Drive model
- Motor power
- Braking duty cycle
- Required resistance value
Engineering calculations or manufacturer documentation should be used for proper sizing.