Siemens Sentron Switch disconnector, 3-pole, 9.5kW, 25A Part number 3LD2164-0TB53

Product Overview

The Siemens 3LD2164-0TB53 is a 3LD series switch disconnector designed for reliable manual isolation and safe disconnection of electrical circuits. With a high switching capacity and a robust 4-pole configuration, it is suitable for use as a main, maintenance, or safety switch in industrial control panels, machinery, and power distribution systems. This model includes a front-operated turn-switch mechanism with a black handle and a grey housing for clear visual ON/OFF indication.

Key Features

• 3LD series switch disconnector
• 4-pole design for complete isolation of three-phase systems with neutral
• Rated operational current: typically 63 A (according to 3LD2 size range)
• Rated operational voltage up to 690 V AC
• Front-operation rotary handle (black) with grey mounting plate
• Clear ON/OFF position indication; padlockable in OFF position for maintenance safety
• High short-circuit withstand capability when used with appropriate upstream protection
• Suitable as a main switch, emergency-off switch, or maintenance isolation switch
• Robust industrial construction with reliable mechanical durability
• Finger-safe terminals and touch-safe design (IP20 when installed)

Technical Specifications

• Article Number: 3LD2164-0TB53
• Product Type: Switch Disconnector (3LD Series)
• Number of Poles: 4-pole (3-phase + neutral)
• Rated Operational Voltage: Up to 690 V AC
• Rated Current: Typically 63 A (3LD2 frame size)
• Switching Duty: AC-23A / AC-21A — suitable for resistive and mixed inductive loads
• Operation Method: Front-mounted rotary handle
• Handle Color: Black with a grey mounting plate
• Mounting Style: Panel/front mounting
• Isolation Function: Fully compliant isolator with positive contact separation
• Terminal Type: Screw terminals; touch-safe
• Protection Class: IP20 (when installed in an enclosure)
• Mechanical Durability: Long service life suitable for repetitive manual switching
• Accessories: Compatible with 3LD auxiliary contacts, door-coupling kits, and extension shafts

Compliance & Standards

• Complies with IEC / EN standards for isolation and switching devices
• Meets requirements for safe disconnection with positive opening operation
• Suitable for use as a main switch, maintenance isolator, or emergency-off switch when properly configured

Applications

The 3LD2164-0TB53 is ideal for machinery, motor control centers, distribution boards, and industrial installations where reliable isolation is required. Typical uses include main incoming switches, disconnecting means for maintenance, machine isolation points, and panel-mounted safety switches. Its 4-pole configuration ensures full isolation of three-phase loads including the neutral conductor, making it suitable for a wide range of industrial and commercial electrical systems.