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Siemens 3LD2804-1TP53 SENTRON 3-Pole Emergency Switch - 125A

Siemens SENTRON 3LD Series 3-pole emergency switch disconnector.

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ManufacturerSiemens

Part number3LD2804-1TP53

Poles 3

Rated Operational Current (Iu) 125 A

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

Function Emergency switching-off

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Emergency switching-off capability 3-pole configuration 125A current rating 45kW power handling Front-mounted design Integrated 1NC/1NO auxiliary contacts Red/yellow safety handle

Product description

The Siemens 3LD2804-1TP53 is a 3-pole SENTRON Series 3LD switch disconnector designed as an emergency switching-off switch. It features a high rated operational current (Iu) of 125A and an operating power of 45kW at 400V AC-23A. This model is for front mounting, includes 1 Normally Closed (NC) and 1 Normally Open (NO) auxiliary contacts, and is equipped with a red/yellow rotary operating mechanism for clear emergency identification.

This switch is critical for safety applications, offering rapid power disconnection in emergencies. Its higher current rating, auxiliary contacts, and clear visual indication make it suitable for demanding industrial safety and control systems.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, carries the Siemens 3LD2804-1TP53. Ensure operational safety and efficiency by sourcing critical components from our reliable inventory.

Technical specifications

Poles	3
Rated Operational Current (Iu)	125 A
Operating Power (AC-23A at 400V)	45 kW
Function	Emergency switching-off
Mounting	Front-mounted
Auxiliary Contacts	1 NC, 1 NO
Handle Type	Rotary, red/yellow
Series	SENTRON 3LD

Common applications

Emergency power off

Safety circuits

Machine safety

Industrial control panels

Hazardous environments

High-power machinery

Compatible systems

Emergency stop circuits Safety control systems Industrial machinery Control panels

Also known as

Siemens 3LD emergency disconnect 3LD2804 E-stop switch Siemens 125A safety disconnector

Replaces / compatible with

This emergency switch is ideal for safety-critical isolation needs in industrial settings. It can replace other Siemens emergency disconnectors or safety switches with similar specifications, particularly where higher current ratings are required.

Technical note

Expert tip

The front-mounted design with a rotary handle and clear red/yellow indicator is optimized for quick and safe emergency operations in demanding industrial environments.

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Frequently asked questions

What are the advantages of the 4-hole mounting for the handle on the 3LD2804-1TP53?

The 4-hole mounting of the handle on the 3LD2804-1TP53 allows for flexible installation and positioning of the operating handle, particularly when used with door coupling or in specific panel layouts. This ensures optimal ergonomics and accessibility for emergency operations.