Product Description

Siemens 3SB5400-7EC Legend Plate / Indicating Lamp – SIRIUS ACT Series

Product Overview

The Siemens 3SB5400-7EC is a SIRIUS ACT / 3SB5 series illuminated indicator lamp module used in industrial control panels and operator stations. It is designed to provide clear visual status indication for machine states such as RUN, STOP, FAULT, or READY in automation systems.

Although it is sometimes listed under “legend plate” naming, the 3SB5400-7EC is not a labeling plate. It is an integrated LED lamp holder module used in Siemens 22 mm modular pushbutton systems for reliable visual signaling.

This variant typically operates on 110 V AC and features a red LED indication, commonly used for fault, stop, or emergency status signaling in industrial environments.

Key Features

• Genuine Siemens SIRIUS ACT / 3SB5 series component
• Part Number: 3SB5400-7EC
• Integrated LED indicator lamp module
• Bright red LED illumination
• Operating voltage: 110 V AC
• Screw terminal connection for secure wiring
• Front panel mounting (22 mm modular system)
• Long service life with low-maintenance LED technology
• High reliability for industrial control applications

• Applications

  The Siemens 3SB5400-7EC is widely used in:

  • Industrial control panels
  • PLC-based automation systems
  • Machine operator stations
  • Motor control centers (MCC)
  • Electrical distribution boards
  • OEM machinery interfaces
  • Process monitoring and fault indication systems

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  Benefits

  Clear fault indication

  Red LED provides strong visibility for fault, stop, or emergency conditions, improving operator response time.

  Reliable industrial performance

  Designed for continuous operation in demanding electrical environments.

  Energy-efficient LED technology

  Low power consumption with long operational life reduces maintenance needs.

  Modular integration

  Compatible with Siemens SIRIUS ACT 22 mm systems for fast installation and standardized panel design.