Siemens 3RT1926-2EJ31 SIRIUS Solid-State Time-Delay Auxiliary Switch, 5-100s, 24V AC/DC, ON-Delay for 3RT1 Contactors Original Brand New

Overview

The Siemens 3RT1926-2EJ31 is a high-performance solid-state time-delayed auxiliary switch from the renowned SIRIUS modular system, specifically designed for seamless integration with 3RT1 contactors (sizes S0, S2, and S3). This front-side mountable module provides reliable, adjustable time-delay functionality for industrial control circuits, ensuring precision in applications requiring sequencing or interlocking. Its solid-state design guarantees long-lasting reliability and resistance to wear compared to traditional electromechanical timers.

Key Features & Technical Specification

• Product Number: 3RT1926-2EJ31
• Design: Solid-state, front-side mountable auxiliary switch block.
• Compatibility: Designed for use with Siemens 3RT1 contactors (S0/S2/S3).
• Time Function: ON-Delay (Delayed Energization).
• Time Range: Fully adjustable from 5 to 100 seconds (s).
• Control Voltage: Versatile dual-voltage compatibility: 24 V AC/DC.
• Contact Configuration: 1 NO (Normally Open) and 1 NC (Normally Closed) instantaneous contacts.

Benefit

• Enhanced Control: Adds critical time-delay functionality to existing 3RT1 contactor circuits without needing a separate DIN-rail timer.
• Space-Saving: Front-side mounting provides a compact solution, saving valuable space within control panels.
• High Reliability: The solid-state design ensures millions of switching cycles, offering exceptional durability and minimal maintenance downtime.
• Simplified Wiring: Direct, tool-free mounting and clear terminal markings streamline installation and commissioning.
• Global Standard: Part of the widely adopted Siemens SIRIUS system, ensuring compatibility and easy sourcing worldwide.

Function

This device operates as an ON-Delay Timer. When the associated 3RT1 contactor is energized (coil voltage applied), the auxiliary switch’s time delay begins. The contacts will only change their state after the set time (5-100s) has elapsed. This function is vital for applications like sequential motor starting, alarm inhibition, or delayed activation of ventilation systems.

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