SEW-Eurodrive Brake Rectifier – 8254591

Overview

The SEW-Eurodrive 8254591 Brake Rectifier is a specialized component manufactured for use with SEW-Eurodrive electromagnetic brake systems. The rectifier converts AC supply voltage to a controlled DC output (typically 20–30 V DC at 5 A) that is suitable for energizing and controlling brake coils mounted on motors or gear units. 

This type of rectifier — often referenced as BSG 8254591 or Brake Control Rectifier — is essential in drive installations equipped with electromagnetic braking assemblies on AC motors or gear motored drive systems. It ensures that the brake coil receives a stable DC input to reliably release and hold the brake while reducing wear and providing consistent performance. 

Functionality & Performance

In industrial braking systems on SEW motor and drive solutions, the brake rectifier plays a critical role by converting the incoming AC mains into brake coil DC power. This ensures that when the control voltage is applied, the brake coil energizes to release the brake; when voltage is removed, spring action of the brake engages to stop the motor quickly and safely. 

The controlled DC output (20–30 V) and 5 A capacity make it suitable to work with a wide range of SEW-Eurodrive brake models that use similar voltage ranges for DC coil activation. 

Industrial Applications

This rectifier module is typically used in:

• Electromagnetic motor brake systems on AC motors and gearmotors. 

• Packaging, conveying, and material handling installations where controlled stopping and holding torque is necessary. 

• Drive automation panels requiring precise brake control and safety adherence.

Because SEW-Eurodrive motors often incorporate brakes for safety hold or controlled stopping, this rectifier ensures consistent brake engagement characteristics during operation and power interruptions. 

FAQ

What is the function of the SEW-Eurodrive 8254591 Rectifier?

It converts AC power to DC voltage (20–30 V DC) needed to drive electromagnetic brake coils on SEW motors and drive systems. 

What voltage and current does it support?

It supports 20–30 V DC output at up to 5 A for brake coil supply. 

Is this rectifier a spare part?

Yes — it is a dedicated accessory / control component for SEW electromagnetic brakes. 

Where is it used?

It’s used in industrial drive systems where SEW electromagnetic brakes are mounted, such as conveyor systems, automation machinery, and motorized equipment. 

Call to Action

Request a quote or technical inquiry for the SEW-Eurodrive 8254591 Brake Rectifier Module to ensure it meets your brake control requirements and drive system specifications.