Siemens Sentron 3LD Switch disconnector, front panel, 4-pole, 25A Part number 3LD2103-1TL53

Product Overview

The Siemens 3LD2103-1TL53 is a 4-pole switch-disconnector from the SENTRON 3LD series, designed for safe mains isolation and emergency switching in industrial power distribution systems. It is rated for 25 A and supports front mounting with a rotary handle, making it suitable for panel and machine installations where reliable isolation and clear OFF position indication are required.

Key Features

• 4-pole switch-disconnector (3 phases + neutral)
• Rated operational current: 25 A
• Designed for emergency switching and safe mains isolation
• Front mounting with rotary operating mechanism
• Suitable for AC-23A duty applications
• Lockable in the OFF position for maintenance safety
• Robust industrial design for control panel and machine installations

Technical Specifications

• Article Number: 3LD2103-1TL53
• Product Family: Siemens SENTRON 3LD
• Number of Poles: 4
• Rated Operational Current (Ie): 25 A
• Rated Insulation Voltage (Ui): 690 V
• Rated Impulse Withstand Voltage (Uimp): 6 kV
• Utilization Category: AC-23A
• Switching Capacity: approx. 9.5 kW at 400 V
• Mounting Type: Front mounting with rotary handle
• Degree of Protection (Front): IP65

Compliance & Certifications

• Designed according to IEC/EN standards for low-voltage switchgear
• Compliant with Siemens SENTRON industrial safety and switching requirements
• Suitable for emergency-off and maintenance isolation applications

Applications

This switch-disconnector is ideal for use in industrial switchboards, machine control panels and power distribution systems where safe isolation of equipment is required. It is commonly used as a main switch, maintenance switch or emergency-off device in manufacturing plants, automation systems and electrical installations.