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Siemens 3LD2504-1TP53 SENTRON 3-Pole Emergency Switch with Aux Contacts

Siemens SENTRON 3LD 3-pole 63A emergency switch with 1 NC/1 NO aux contacts.

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ManufacturerSiemens

Part number3LD2504-1TP53

Poles 3

Rated Operational Current (Iu) 63 A

Operating Power (AC-23A, 400V) 22 kW

Mounting Front-mounted

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3-pole emergency switch 63A current rating Front-mounted design Rotary operating mechanism Includes 1 NC and 1 NO auxiliary contacts Red/Yellow emergency handle

Product description

The Siemens 3LD2504-1TP53 is a SENTRON 3LD series switch disconnector, designed as a 3-pole emergency switching-off switch. It has a rated operational current (Iu) of 63 A and an operating power of 22 kW at AC-23 A and 400 V. This front-mounted unit features a red/yellow rotary operating mechanism, 4-hole handle mounting, and includes 1 normally closed (NC) and 1 normally open (NO) auxiliary contacts.

This emergency switch is crucial for safety applications in industrial environments, providing reliable shutdown capability. The included auxiliary contacts allow for integration into safety circuits or status monitoring systems.

Stanlo Automation, a veteran-owned distributor of surplus industrial automation parts, offers the Siemens 3LD2504-1TP53. We ensure you have access to quality surplus components to keep your operations running without interruption.

Technical specifications

Poles	3
Rated Operational Current (Iu)	63 A
Operating Power (AC-23A, 400V)	22 kW
Mounting	Front-mounted
Operation	Rotary
Auxiliary Contacts	1 NC, 1 NO
Color	Red/Yellow
Handle Mounting	4-hole

Common applications

Emergency power off

Machine safety

Industrial automation

Control panels with status

Power distribution safety

Plant safety systems

Compatible systems

Industrial safety systems Machine safety circuits Emergency power off controls Control panels with status feedback

Also known as

Siemens 3LD emergency switch 3LD2504-1TP53 disconnect Siemens 63A emergency stop SENTRON red yellow switch

Replaces / compatible with

This 63A 3-pole emergency switch disconnector with auxiliary contacts can replace older Siemens 3LD series emergency switches or compatible devices. Confirm fit and specifications.

Technical note

Expert tip

The red/yellow rotary handle provides a clear visual indication of the emergency stop status, critical for rapid operator response in hazardous situations.

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Frequently asked questions

How do the auxiliary contacts on the 3LD2504-1TP53 integrate into safety circuits?

The 1 NC and 1 NO auxiliary contacts on the Siemens 3LD2504-1TP53 can be wired into safety interlock circuits. For instance, the NC contact can signal the emergency stop activation to a controller, ensuring a safe shutdown sequence.