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Siemens 3LD2814-0TK51 SENTRON 3-Pole Main Switch - 125A

Siemens SENTRON 3LD Series 3-pole switch disconnector.

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ManufacturerSiemens

Part number3LD2814-0TK51

Poles 3

Rated Operational Current (Iu) 125 A

Operating Power (AC-23A at 400V) 45 kW

Mounting Floor mounting with door coupling

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3-pole main switch 125A current rating 45kW power handling Floor mounting with door coupling Rotary operation Safe isolation

Product description

The Siemens 3LD2814-0TK51 is a 3-pole SENTRON Series 3LD switch disconnector designated for main switch applications. It boasts a rated operational current (Iu) of 125A and can handle an operating power of 45kW at 400V AC-23A. This model is designed for floor mounting and incorporates a door coupling mechanism with a black rotary operating mechanism and 4-hole mounting for the handle.

This robust switch disconnector is ideal for primary load break and isolation in industrial power distribution, motor control, and main power disconnect applications. The door coupling ensures safety during maintenance by allowing external operation while preventing access to live components.

Stanlo Automation, your veteran-owned source for surplus industrial automation parts, offers the Siemens 3LD2814-0TK51. Secure high-quality, reliable components from our inventory to minimize your downtime and maintain operational efficiency.

Technical specifications

Poles	3
Rated Operational Current (Iu)	125 A
Operating Power (AC-23A at 400V)	45 kW
Mounting	Floor mounting with door coupling
Handle Type	Rotary, black, 4-hole mounting
Series	SENTRON 3LD

Common applications

Main power disconnect

Load break switching

Motor control

Industrial power distribution

Control panels

Machinery isolation

Compatible systems

Industrial control panels Motor control centers Machinery enclosures Power distribution cabinets

Also known as

Siemens 3LD 125A disconnector 3LD2814 main switch Siemens door coupled switch

Replaces / compatible with

This switch disconnector is designed for primary isolation duties and can replace older Siemens main switches or disconnectors with similar current and power ratings. Verify compatibility with your system's safety interlocks.

Technical note

Expert tip

When using the door coupling, ensure the rotary handle and mechanism are correctly aligned and securely fastened to maintain reliable operation and safety interlocks.

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Frequently asked questions

What is the benefit of the door coupling on the Siemens 3LD2814-0TK51?

The door coupling feature on the 3LD2814-0TK51 allows the switch disconnector to be operated from outside an enclosure or cabinet door. This enhances safety by enabling isolation of power without needing to open the cabinet, protecting personnel from hazardous live parts.