SEW-EURODRIVE BME 1.5 8257221

SEW Eurodrive BME 1.5 Brake Rectifier Module

Description

The SEW Eurodrive BME 1.5, part number 8257221, is a robust and reliable half-wave brake rectifier designed for controlling the spring-applied brakes on SEW motors. It effectively converts AC supply voltage into the DC voltage required to operate the brake coil, ensuring safe and precise motor control. This module is essential for applications demanding controlled stopping and holding torque. This unit comes complete with an angled plug connector.

Specifications

• Manufacturer: SEW Eurodrive
• Model: BME 1.5
• Part Number: 8257221
• Input Voltage (UE): 150…500V AC
• Max. Output Current (IN): 1.5A DC
• Type: Half-wave Rectifier
• Mounting: DIN Rail or panel mount

Label Info

• UE = 150…500V AC
• IN = 1.5A
• Model: BME 1,5
• Part No: 8257221

Application

This brake rectifier is commonly used in industrial automation systems, including material handling, conveyor technology, packaging machinery, and any application where SEW brake motors are employed for controlled deceleration and secure load holding.

Country of Origin

Manufactured by SEW Eurodrive in Germany.

CO2 Impact

By reusing this component, you are contributing to the circular economy and avoiding the CO2 emissions associated with manufacturing a new part. This single unit represents a saving of approximately 4.8 kg of CO2, which is comparable to the emissions from driving a car for 24 kilometers.

Availability

This product is an obsolete model but is available as a tested, high-quality spare part to extend the life of your existing machinery. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the primary function of the SEW BME 1.5 brake rectifier?

The BME 1.5 converts the incoming AC voltage from the motor terminals or an external supply into DC voltage. This DC voltage is used to release the electromagnetic spring-applied brake on an SEW motor, allowing the motor shaft to turn freely.

Is this module compatible with all SEW brake motors?

No, compatibility depends on the motor’s brake coil specifications. The BME 1.5 is designed for brakes that require a DC supply and have a current draw of up to 1.5A. Always check your motor’s technical documentation to ensure the voltage and current ratings match.

What are common signs of a failing brake rectifier?

A failing rectifier may cause the motor brake to not release, resulting in the motor stalling or drawing high current. It can also cause the brake to engage slowly or not hold properly. Inconsistent braking performance is a key indicator that the rectifier may need inspection or replacement.

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Last Update: Friday, March 13, 2026