The Siemens 3LD2203-0TK51 Switch Disconnector is a premium-quality industrial switching device engineered for reliable electrical isolation, safe power control, and long-term operational performance. As part of the highly trusted Siemens SENTRON 3LD2 Series, this switch disconnector is designed to meet the rigorous demands of industrial automation, machine building, motor control centers, power distribution systems, and electrical control panels. Offering dependable switching performance and robust construction, the 3LD2203-0TK51 serves as an ideal solution for applications requiring safe disconnection and reliable control of electrical circuits.
The Siemens 3LD2203-0TK51 is a 3-pole main switch disconnector rated at 32A with an operational power rating of 11.5 kW at AC-23A, 400V. It features a front-mounted rotary operating mechanism with a black handle and 4-hole mounting arrangement, ensuring simple installation and convenient operation in industrial control systems. Designed for low-voltage switching applications, the switch provides safe isolation and dependable performance under demanding operating conditions.
One of the major advantages of the 3LD2203-0TK51 Switch Disconnector is its versatility. Siemens classifies this device as a main switch, maintenance switch, and safety isolation switch, making it suitable for a wide variety of industrial applications. Whether used in manufacturing facilities, process automation plants, OEM machinery, or power distribution panels, the switch delivers secure electrical isolation and reliable switching functionality.
The switch incorporates a rotary operating mechanism with clearly defined ON and OFF positions. The black rotary handle provides excellent visibility and ergonomic operation, allowing maintenance personnel and operators to quickly identify circuit status. Its front-mounted design simplifies integration into electrical panels while maintaining accessibility and ease of use.
A key benefit of the Siemens 3LD2203-0TK51 is its superior environmental protection. The switch features an IP65 protection rating from the front, offering excellent resistance against dust ingress and water exposure. This level of protection makes it suitable for harsh industrial environments where equipment reliability is essential. Manufacturing plants, processing facilities, utility infrastructure projects, and automation systems can all benefit from the durability and environmental resistance offered by this switch.
The SENTRON 3LD2 Series is recognized worldwide for long service life and dependable operation. The 3LD2203-0TK51 is designed to withstand up to 100,000 mechanical switching operations, helping reduce maintenance costs and improve system uptime. Siemens engineering ensures reliable performance even in applications involving frequent switching and continuous operation.
Another important safety feature is the switch's ability to be locked in the OFF position. This functionality supports lockout/tagout (LOTO) procedures, helping maintenance personnel safely isolate equipment during servicing and repair work. By preventing accidental energization, the switch contributes significantly to workplace safety and compliance with industrial safety standards.
The 3LD2203-0TK51 is engineered for operation at voltages up to 690V AC and offers dependable switching performance for motor circuits, machinery, and electrical distribution systems. Its compact footprint and rugged construction make it a preferred choice among panel builders, electrical contractors, maintenance engineers, and automation professionals seeking a reliable isolation solution.
At SB Smart (SBSmart.in), we supply genuine Siemens electrical and industrial automation products that meet the highest standards of quality, safety, and reliability. The Siemens 3LD2203-0TK51 Switch Disconnector delivers authentic Siemens engineering and long-term performance for mission-critical industrial installations.
Whether you are upgrading an existing electrical system, building a new control panel, or implementing a reliable isolation solution, the Siemens 3LD2203-0TK51 offers the durability, safety, and operational confidence expected from Siemens SENTRON products.
| Specification | Details |
|---|---|
| Product Name | Main Control Switch / Switch Disconnector |
| Part Number | 3LD2203-0TK51 |
| SKU | 3LD2203-0TK51 |
| Brand | Siemens |
| Product Family | SENTRON 3LD2 |
| Product Type | Switch Disconnector |
| Function | Main Switch |
| Number of Poles | 3 Pole |
| Rated Current (Iu) | 32 A |
| Operating Power AC-23A at 400V | 11.5 kW |
| Rated Operational Voltage (Ue) | 690 V AC |
| Mounting Type | Front Mounted |
| Operating Mechanism | Rotary Operating Mechanism |
| Handle Type | Black Rotary Handle |
| Handle Mounting | 4-Hole Mounting |
| Protection Rating | IP65 (Front) |
| Mechanical Life | Up to 100,000 Operations |
| Lockable in OFF Position | Yes |
| Operating Temperature | -25°C to +55°C |
| Connection Type | Box Terminal |
| Application | Main Switch, Safety Isolation & Maintenance |
| Standards Compliance | IEC 60947-3 |
| Manufacturer | Siemens |
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