6SE9112-0BA53 - Inverter - SIEMENS

SIEMENS MICROMASTER Junior 6SE9112-0BA53, reliable speed control for your MMJ37 drives

Aimed at B2B industrial environments, the SIEMENS MICROMASTER Junior AC drive, reference 6SE9112-0BA53, meets the need for a simple, robust modulation of asynchronous motors. Maintenance teams, system integrators and machine builders will find a proven solution to stabilise production, secure start-up and adjust speed according to load. Powered by 1 AC 230 V ±15%, it provides an output current of 2 A, suitable for the low power levels typical of pumps, fans and light conveyors. Its integrated EMC class A filter eases compliance in workshops and on-site. Although discontinued by the manufacturer since 10/01/2012, this model remains widely deployed. Standard Exchange Industry guarantees continuity of operation through supply in standard exchange format, new or refurbished depending on availability, and a repair service to extend the life of your installed fleet.

Concrete benefits for your line availability

• Fast commissioning – Local configuration via keypad and display simplifies basic function adjustment for controlled restart after intervention.
• Built-in electromagnetic compatibility – The onboard EMC class A filter reduces the need for extra accessories and secures integration in industrial environments.
• Flexible power supply – 1 AC 230 V ±15% input to drive a three-phase asynchronous motor, useful when only a single-phase source is available.
• Installation protection – Basic protective functions, including overload and overvoltage, to preserve the motor and the drive in common uses.
• Reduced downtime – Fast 24-72 h supply and SEI service alternatives limit machine stoppage in case of failure.

Key specifications and build quality

The 6SE9112-0BA53 belongs to the MICROMASTER Junior MMJ37 family, a range recognised for controlling asynchronous motors in standard applications. The key parameters available for this model focus on reliable frequency and speed management, with basic alarm and protection in the event of adverse electrical conditions. The input is specified as 1 AC 230 V with a tolerance of ±15%, with a maximum input current of 3.8 A. The output provides a nominal current of 2 A, suited to the low-power motors commonly used on pumps, fans and light drives. An EMC class A filter is integrated to meet compatibility requirements in typical industrial environments. The range is configured for cabinet mounting and control via a local keypad with display, allowing direct setup without complex tools. Regulation is performed by frequency modulation, which is suitable for standard speed variation tasks and direction reversal. Some market listings indicate version B.1. As the product has been discontinued by SIEMENS since January 2012, attention to operational continuity and the selection of refurbished or repaired units becomes crucial for service continuity.

Target applications and typical use cases

This drive is intended for simple speed applications without advanced positioning requirements. It efficiently serves pumps and fans to adjust flow, conveyors to adapt throughput, and small process machines where speed modulation and reversibility are needed. For upgrades or replacements on single-phase 230 V installations, it is a practical solution to run a three-phase asynchronous motor while keeping cabinet footprint and wiring standard.

Operational continuity, SIEMENS heritage and SEI service

The SIEMENS name ensures a worldwide installed base and recognised industrial reliability. Despite the end of production for this reference, operational support remains critical for sites still using it. Standard Exchange Industry addresses this need with three complementary paths, depending on availability and diagnosis: standard exchange for a quick restart, supply of new or refurbished units from an international network, and repair when refurbishment is appropriate. With more than 50,000 references and 85+ brands managed, 24-72 h deliveries and warranties from 6 to 24 months depending on the service, SEI helps contain downtime costs, improve maintenance reliability and extend the lifecycle of your automation equipment.

Need an immediate replacement or technical advice on the best option between exchange, supply or repair of the 6SE9112-0BA53 MICROMASTER Junior MMJ37? Contact our specialists. We will guide you to the most reliable and fastest solution to restore your production safely.