JJY023454020001 SIEMENS Exclusive Braking Resistor for PM240-2 Power Module Original Brand New

JJY023454020001 SIEMENS Exclusive Braking Resistor for PM240-2 Power Module Original Brand New

The SIEMENS JJY023454020001 braking resistor is a high-quality component engineered for use with PM240-2 Power Modules, frame size FSG. Designed to handle excess energy generated during braking operations, this resistor ensures stable and reliable performance in industrial automation systems. With a rated power of 77kW for short-term operation and 3850W for continuous duty, as well as a resistance value of 7.1 Ohm, it provides excellent energy dissipation capability. The unit consists of two parallel-connected braking resistors, identified as JJY023422620001 and JJY023434020001, which must be installed together in plant applications.

When mechanical systems with large rotating masses are rapidly decelerated, significant energy is fed back into the DC link of the drive system. Since PM240-2 modules cannot return this regenerative energy to the supply network, the braking resistor converts the energy into heat, preventing overloads and protecting the drive system. This ensures efficient operation and avoids potential downtime in demanding production environments.

Overview

The braking resistor is specifically designed to be mounted laterally next to the PM240-2 Power Modules. For larger frame sizes such as FSD through FSG, the recommended installation is outside the control cabinet or switchgear room. By directing heat away from the Power Modules, this arrangement reduces cooling demands and minimizes the need for extensive air conditioning. Each resistor is UL-listed and equipped with a temperature switch for monitoring and protection. If overheating occurs, the switch must be evaluated to avoid secondary damage to equipment.

Design

The robust design of the JJY023454020001 ensures dependable service even under demanding operating conditions. The module includes provisions for electromagnetic compatibility, with shield connection kits available for optional braking resistor connections in frame sizes FSD to FSG. This careful attention to thermal management, durability, and safety makes it a trusted solution for industries where reliable drive performance is essential.

Product Code: JJY023454020001

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