Siemens LED module, green, spring, for front plate mounting, 24VAC/DC Part number 3SU1401-1BB40-3AA0

Product Overview

The Siemens 3SU1401-1BB40-3AA0 is a signalling-/indicator module — an LED light block accessory from the SIRIUS ACT 3SU1 system. It’s designed to mount on the front plate of standard 22 mm operator cutouts (pushbuttons, selector switches, etc.), providing visual indication with an integrated LED. The module uses a spring-type terminal connection for easy wiring and fits seamlessly into modular control-panel setups where signalling or status indication is required.

Key Features

• Front-mountable LED indicator / light block for 22 mm SIRIUS ACT operator devices
• Compact modular design — suitable for dense control-panel layouts
• Spring-type terminals for quick and secure wiring
• Designed for AC/DC supply of appropriate voltage (depending on chosen LED version) — flexible for various control voltages
• Suitable for use in control panels, operator stations, signalling panels, machine controls and other industrial installations requiring visible status indication

Technical Specifications

• Article Number: 3SU1401-1BB40-3AA0
• Product Type: LED indicator / signalling module (light block) — SIRIUS ACT series
• Mounting Cutout: 22 mm standard operator-panel hole
• Terminal Type: Spring-type terminals
• Contact/Light Source: LED integrated — for status indication or signalling
• Compatibility: Fits on front of SIRIUS ACT 3SU1 push-buttons, selector switches, or signalling devices
• Modular Design: Stackable with other 3SU1 modules — maintains panel compactness
• Typical Use: Visual status/indication signalling in control and automation panels

Applications

This light-block module is used wherever a control panel or machine interface requires visual feedback — for example indicating power ON, fault, status, or process conditions. Common applications include machine operator panels, control cabinets, automation switchboards, HVAC control stations, production-line panels, and any industrial system requiring visible signalling alongside manual controls.