The Siemens 3LD2103-0TK53 Emergency Stop Switch is a robust and highly reliable switch disconnector engineered for safe electrical isolation, emergency shutdown functionality, and dependable switching performance in industrial environments. As part of the trusted Siemens SENTRON 3LD2 Series, this emergency switching-off switch is designed to enhance workplace safety while ensuring efficient control of electrical circuits in industrial control panels, machinery, OEM equipment, motor control centers, and power distribution systems. The switch combines Siemens’ proven engineering expertise with a compact design and rugged construction to deliver long-lasting performance in demanding applications.
The 3LD2103-0TK53 is a 3-pole emergency switching-off switch with a rated operational current of 25A and an operating power rating of 9.5 kW at AC-23A, 400V. It features a front-mounted rotary operating mechanism with a highly visible red and yellow emergency handle, making it easy to identify and operate during emergency situations. Siemens specifically classifies this model as an emergency switching-off switch for safety-critical applications.
One of the major advantages of the Siemens 3LD2103-0TK53 is its ability to function as multiple devices within industrial electrical systems. It is suitable for use as:
This versatility allows system integrators, electrical contractors, and panel builders to standardize safety and isolation solutions throughout industrial installations.
The switch is equipped with a rotary operating mechanism and a red/yellow emergency handle mounted using a secure 4-hole fixing arrangement. This internationally recognized emergency-stop color combination helps operators quickly identify the switch during critical situations, reducing response times and improving workplace safety. The clear ON/OFF position indication further enhances operational visibility.
A key feature of the Siemens 3LD2103-0TK53 Emergency Stop Switch is its IP65 protection rating from the front, which provides excellent resistance against dust ingress and water exposure. This makes the switch suitable for harsh industrial environments such as manufacturing facilities, process automation plants, utility installations, infrastructure projects, and OEM machinery applications where reliable performance is essential.
The switch is designed to operate at voltages up to 690V AC and is built using Siemens' proven SENTRON technology. Its rugged construction ensures reliable performance under demanding operating conditions while helping reduce maintenance requirements and improve system uptime. The device is suitable for both new installations and retrofit projects where safe electrical isolation is required.
Another significant advantage is support for lockout/tagout (LOTO) procedures. The 3LD2103-0TK53 can be locked in the OFF position using up to three padlocks, helping maintenance personnel safely isolate equipment before servicing. This feature contributes to improved workplace safety and compliance with industrial maintenance standards.
The compact front-mounted design allows easy installation in electrical control panels and switchboards while maintaining accessibility and ease of operation. Its molded construction and industrial-grade materials help ensure dependable performance throughout a long service life. The switch is widely used in industrial automation systems, power distribution applications, and machine safety circuits where reliable emergency isolation is critical.
At SB Smart (SBSmart.in), we supply genuine Siemens electrical and industrial automation products sourced through trusted channels. The Siemens 3LD2103-0TK53 Emergency Stop Switch offers authentic Siemens quality, reliable operation, and long-term performance for critical industrial applications.
Whether you are building a new control panel, upgrading an electrical distribution system, or implementing a reliable emergency isolation solution, the Siemens 3LD2103-0TK53 delivers the safety, durability, and operational confidence expected from Siemens SENTRON products.
| Specification | Details |
|---|---|
| Product Name | Emergency Switching-Off Switch |
| Part Number | 3LD2103-0TK53 |
| SKU | 3LD2103-0TK53 |
| Brand | Siemens |
| Product Family | SENTRON 3LD2 |
| Product Type | Switch Disconnector |
| Function | Emergency Stop Switch |
| Number of Poles | 3 Pole |
| Rated Current (Iu) | 25 A |
| Operating Power AC-23A at 400V | 9.5 kW |
| Rated Operational Voltage (Ue) | 690 V AC |
| Mounting Type | Front Mounted |
| Operating Mechanism | Rotary Operating Mechanism |
| Handle Type | Red / Yellow Rotary Handle |
| Handle Mounting | 4-Hole Mounting |
| Protection Rating | IP65 |
| Connection Type | Box Terminal |
| Lockable in OFF Position | Yes |
| Maximum Padlocks | Up to 3 |
| Operating Temperature | -25°C to +55°C |
| Application | Emergency Stop, Safety Isolation & Power Control |
| Standards Compliance | IEC 60947-3 |
| Approvals | CE, CSA, UL |
| Manufacturer | Siemens |
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