The Siemens 3LD2003-0TK53 Emergency Stop Switch is a high-quality industrial switch disconnector engineered to provide safe electrical isolation, dependable emergency shutdown functionality, and reliable switching performance in demanding industrial environments. As part of the renowned Siemens SENTRON 3LD2 Series, this emergency switching-off switch is designed to protect personnel, equipment, and electrical systems by enabling rapid disconnection of power whenever emergency situations, maintenance procedures, or servicing activities require complete circuit isolation. The robust design, compact footprint, and industrial-grade construction make the 3LD2003-0TK53 an ideal solution for control panels, machinery, motor control centers, and power distribution systems.
The Siemens 3LD2003-0TK53 is a 3-pole emergency switching-off switch with a rated operational current of 16A and an operating power rating of 7.5 kW at AC-23A, 400V. Designed for front mounting, the switch features a highly visible red and yellow rotary operating handle that allows quick identification during emergency situations. Siemens classifies this model specifically as an emergency OFF switch for industrial safety applications.
One of the major advantages of the 3LD2003-0TK53 Emergency Stop Switch is its versatility. The switch can be used in various industrial applications, including:
This flexibility enables engineers, panel builders, and maintenance professionals to implement standardized safety solutions across a wide range of industrial installations.
The switch incorporates a durable rotary operating mechanism with a red/yellow emergency handle, the globally recognized color scheme for emergency switching devices. This design helps operators quickly identify and operate the switch during critical situations, improving response times and workplace safety. The clear 0-1 position indication provides instant visibility of switch status, helping maintenance personnel verify isolation conditions before servicing equipment.
A key benefit of the Siemens 3LD2003-0TK53 is its outstanding environmental protection. The switch provides IP65 protection from the front, offering excellent resistance against dust ingress and water exposure. This makes it suitable for harsh industrial environments such as manufacturing facilities, process plants, OEM machinery, utility infrastructure projects, and automation systems where reliability is critical.
The 3LD2003-0TK53 is designed for operation at voltages up to 690V AC and is engineered to deliver dependable switching performance throughout its service life. Siemens SENTRON switch disconnectors are recognized worldwide for their durability and reliability, helping reduce maintenance requirements and improve overall system uptime.
Safety remains a core focus of the SENTRON 3LD2 product range. The Siemens 3LD2003-0TK53 can be locked in the OFF position and supports lockout/tagout (LOTO) procedures. This feature helps maintenance personnel safely isolate equipment during servicing while reducing the risk of accidental energization. Such capabilities are essential for modern industrial safety programs and compliance requirements.
The compact front-mounted design simplifies installation in electrical control panels and switchboards while maintaining convenient access for operators. Its rugged construction, reliable switching performance, and high protection rating make it a preferred choice for industrial safety and isolation applications.
At SB Smart (SBSmart.in), we supply genuine Siemens electrical and industrial automation products designed to meet the highest standards of safety, reliability, and performance. The Siemens 3LD2003-0TK53 Emergency Stop Switch delivers authentic Siemens engineering and dependable operation 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 3LD2003-0TK53 offers the safety, durability, and operational confidence expected from Siemens SENTRON products.
| Specification | Details |
|---|---|
| Product Name | Emergency Switching-Off Switch |
| Part Number | 3LD2003-0TK53 |
| SKU | 3LD2003-0TK53 |
| Brand | Siemens |
| Product Family | SENTRON 3LD2 |
| Product Type | Switch Disconnector |
| Function | Emergency Stop Switch |
| Number of Poles | 3 Pole |
| Rated Current (Iu) | 16 A |
| Operating Power AC-23A at 400V | 7.5 kW |
| Rated Operational Voltage (Ue) | 690 V AC |
| Mounting Type | Front Mounted |
| Operating Mechanism | Rotary Operating Mechanism |
| Handle Type | Red / Yellow Rotary Handle |
| Position Indicator | 0 – 1 |
| Protection Rating | IP65 |
| Face Dimensions | 67 x 67 mm |
| Mounting Hole Diameter | Ø5 mm |
| Operating Temperature | -25°C to +55°C |
| Lockable in OFF Position | Yes |
| Connection Type | Box Terminal |
| Application | Emergency Stop & Safety Isolation |
| Standards Compliance | IEC 60947-3 |
| Manufacturer | Siemens |
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