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Siemens 3LD2103-1TP53 3-Pole Emergency Switch with Contacts

Siemens 3LD2103-1TP53 SENTRON 3-pole emergency switch w/ contacts.

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ManufacturerSiemens

Part number3LD2103-1TP53

Poles 3

Current (Iu) 25 A

Operating Power (AC-23A, 400V) 9.5 kW

Series 3LD

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3-pole configuration 25A current rating 9.5kW at 400V AC-23A Emergency switching-off function 1 NC + 1 NO auxiliary contacts Red/Yellow rotary mechanism

Product description

The Siemens 3LD2103-1TP53 is a 3-pole SENTRON series switch disconnector functioning as an emergency switching-off switch. It has a 25 A rating and an operating power of 9.5 kW at 400V AC-23A. This front-mounted unit is distinguished by its red/yellow rotary operating mechanism and includes integrated auxiliary contacts: 1 Normally Closed (NC) and 1 Normally Open (NO). It also features a 4-hole mounting for the handle.

This emergency switch is ideal for applications where auxiliary signaling or control logic is required in conjunction with the main power disconnection. Common uses include machine monitoring, safety interlocks, and signaling panels in manufacturing, material handling, and processing industries.

Stanlo Automation provides the Siemens 3LD2103-1TP53, a vital component for industrial safety and control. As a veteran-owned surplus parts distributor, we ensure you get quality surplus components quickly and efficiently.

Technical specifications

Poles	3
Current (Iu)	25 A
Operating Power (AC-23A, 400V)	9.5 kW
Series	3LD
Operation	Rotary
Auxiliary Contacts	1 NC, 1 NO
Color	Red/Yellow
Handle Mount	4-hole

Common applications

Emergency Shutdown

Machine Safety

Safety Interlocks

Control Signaling

Industrial Automation

Manufacturing

Process Control

Compatible systems

Industrial Control Panels Safety Interlock Systems Machine Monitoring Systems

Also known as

Siemens 3LD Emergency Switch with Aux 3LD2103 E-stop w/ contacts Siemens Red/Yellow Disconnector NC NO

Replaces / compatible with

This emergency switch disconnector with auxiliary contacts is suitable for replacing Siemens 3LD series 3-pole emergency switches that require additional signaling or control functions. It offers integrated NC/NO contacts for control circuit integration.

Technical note

Expert tip

The auxiliary contacts should be wired according to the specific machine's safety logic requirements to ensure proper operation of interlocks or status indicators.

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Frequently asked questions

What do the auxiliary contacts on the Siemens 3LD2103-1TP53 do?

The Siemens 3LD2103-1TP53 features 1 Normally Closed (NC) and 1 Normally Open (NO) auxiliary contacts. These contacts can be wired into control circuits to signal the status of the main switch or to enable interlocking functions, such as stopping a machine when the emergency switch is activated.