SIEMENS SIRIUS ACT Contact Module 3SU1400-1AA10-3FA0, 1NO+1NC, Screw Terminal

In industrial control panels, the SIEMENS 3SU1400-1AA10-3FA0 contact module serves as the switching element behind SIRIUS ACT pushbuttons and indicator lights. It provides one normally open and one normally closed contact, allowing machine builders to implement start/stop functions, status signaling, and interlocking circuits with a single compact module.

Key specifications

• Contact configuration: 1 NO + 1 NC
• Connection type: screw terminal
• Rated insulation voltage: 500 V AC/DC
• Rated impulse withstand voltage: 6 kV
• Rated operational current (AC-15): 6 A at 230 V
• Rated operational current (DC-13): 3 A at 24 V
• Wire cross-section: 0.5–2.5 mm² (solid or flexible with ferrule)
• Tightening torque: 0.8–1.2 Nm
• Operating temperature: -25 to +70 °C
• Mechanical endurance: 10 million switching cycles

Why choose it

The module’s silver alloy contacts ensure reliable switching over a long service life, while the screw terminals provide a secure, maintenance-friendly connection. Its compact design integrates directly into the SIRIUS ACT ecosystem, reducing wiring effort and panel space.

Ideal use cases

• Control panels for machine tools and conveyor systems
• Operator stations requiring both NO and NC signaling
• Retrofitting existing SIRIUS ACT pushbutton installations

Good to know

The module is designed for floor mounting within compatible SIRIUS ACT enclosures. Short-circuit protection is achieved with a 10 A gG fuse. Terminal protection degree is IP20, suitable for enclosed industrial environments.