Siemens 3SB5400-0C Enclosure for Command Devices – SIRIUS ACT Series (Variant C)

Product Overview

The Siemens 3SB5400-0C is a SIRIUS ACT / 3SB5 series contact block (NC element) used in modular command devices for industrial control panels. It is designed to be integrated with pushbuttons, selector switches, and operator stations to provide reliable switching functionality in automation systems.

This variant features a 1 NC (Normally Closed) contact with screw terminal connection and is mounted in front-plate command device assemblies.

Although often grouped in enclosure/command device assemblies, this part itself functions as an internal switching element used inside Siemens 22 mm control devices.

Key Features

• Genuine Siemens SIRIUS ACT / 3SB5 series component
• Part Number: 3SB5400-0C
• 1 NC contact block configuration
• Screw terminal connection for secure wiring
• Front plate mounting design
• High mechanical durability for industrial use
• Compatible with Siemens modular command devices (22 mm system)
• Reliable switching performance for control circuits

Applications

The Siemens 3SB5400-0C is used in:

• Industrial control panels
• Machine operator stations
• PLC control systems
• Motor control centers (MCC)
• Automation switch assemblies
• OEM machinery interfaces

Benefits

Reliable switching performance

Ensures stable NC contact operation for safety and control circuits.

Modular design compatibility

Fits into Siemens SIRIUS ACT 22 mm command device systems for flexible configuration.

Easy installation

Screw terminal design allows secure and quick wiring in panel environments.

Industrial durability

Designed for long life in demanding automation and electrical applications.

Note on Product Type

Even though it is sometimes listed alongside “enclosures for command devices,” the 3SB5400-0C is technically a contact block (internal switching element) rather than a physical enclosure housing.