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Siemens 3LD2103-0TK51
by Siemens
Read verified buyer reviews ↓OverviewThe Siemens 3LD2103-0TK51 is a premium main control switch from the SENTRON 3LD series, meticulously designed for reliable power disconnection and precise control in various industrial environments. This sturdy switch boasts a 3-pole configuration, managing a rated operational current of 25 A, making it an essential component for numerous electrical jobs. Engineered for front mounting, it features a distinct black rotary actuator for easy manual control. Its strong build, paired with an IP65 protection rating, ensures outstanding durability and dependability, even in the most demanding industrial conditions.Key Features Optimized 3-Pole Design: Delivers thorough and secure disconnection for three-phase systems, boosting operational safety. Substantial 25 A Operational Current: Perfectly suited for a broad range of industrial load needs, guaranteeing adaptable use. Effortless Front Mounting: Allows for quick and simple installation with a user-friendly 4-hole mounting system, cutting down on downtime. Intuitive Black Rotary Actuator: Provides clear and accurate manual ON-OFF functionality, ensuring ease of use and immediate status feedback. Superior IP65 Protection: Guarantees excellent resistance against dust and powerful water jets, enhancing product lifespan in tough environments. Broad Application Range: Operates effectively as a primary switch, maintenance switch, and crucial safety switch across multiple systems. High Durability: Built for 100,000 mechanical cycles and 6,000 electrical cycles, promising long-term dependability. Technical Specifications Model: 3LD2103-0TK51 Series: SENTRON 3LD Number of Poles: 3 Rated Operational Current (Iu): 25 A Operating Power at AC-23A (400 V): 9.5 kW Insulation Voltage: 690 V Surge Voltage Resistance: 6 kV Protection Class: IP65 Mounting Type: Front mounting with 4-hole attachment Actuator Type: Rotary, black Dimensions: 84 mm (Height) x 67 mm (Width) x 92.5 mm (Depth) Mechanical Service Life: 100,000 operating cycles Electrical Endurance at AC-23A (690 V): 6,000 operating cycles Operating Frequency: Up to 50 operations per hour Ambient Operating Temperature: -25°C to +55°C Applications Industrial Automation Systems: Functions as a highly dependable main switch for machinery and complex equipment, ensuring flawless operation. Power Distribution Panels: Facilitates secure and efficient power disconnection, vital for upkeep and safety within distribution networks. Maintenance and Servicing Operations: Acts as an essential maintenance or repair switch, protecting personnel during equipment servicing. Critical Safety Installations: Serves as a primary safety switch in various industrial control systems, preventing accidents and ensuring compliance. Heating, Ventilation, and Air Conditioning (HVAC): Ideal for managing power to large HVAC units in commercial and industrial settings. Why Choose This Model? Exceptional Durability and Reliability: Engineered for superior endurance and consistent, high-performance operation in the most demanding industrial environments. Simplified and Quick Installation: Features a front mounting design with a straightforward 4-hole attachment, significantly reducing installation time and effort. Outstanding Environmental Protection: The IP65 rating ensures unparalleled durability and longevity against harsh environmental factors such as dust and water. Comprehensive Functional Versatility: Offers a multifaceted solution, suitable for a wide range of applications including main control, emergency stop, safety, and maintenance switching. Trusted Siemens Quality: Benefit from the renowned engineering excellence and reliability of Siemens, a global leader in industrial technology. Order NowElevate the safety, efficiency, and steadfast control of your industrial operations by ordering this Siemens main control switch today.FAQWhat is the primary function of the Siemens 3LD2103-0TK51?The Siemens 3LD2103-0TK51 is designed to provide secure power disconnection and precise control in various industrial electrical systems, functioning as a main, maintenance, or safety switch.What is the rated operational current for this switch?This switch has a robust rated operational current of 25 Amperes, making it suitable for a wide array of industrial load requirements.What kind of protection does the IP65 rating offer?An IP65 rating indicates superior protection against dust ingress and powerful water jets, ensuring extended product lifespan in challenging industrial settings.How is the Siemens 3LD2103-0TK51 mounted?The switch is designed for seamless front mounting with a user-friendly 4-hole attachment system, facilitating quick and straightforward installation.What is the expected mechanical and electrical endurance of this device?The Siemens 3LD2103-0TK51 is engineered for 100,000 mechanical operating cycles and 6,000 electrical operating cycles, ensuring long-term reliability and performance.
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Siemens 3LD2103-0TK51
Overview
This is a genuine Siemens component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Siemens catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Siemens automation ecosystem
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Siemens platform with documented conversion notes
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Model: 3LD2103-0TK51
- Series: SENTRON 3LD
- Number of Poles: 3
- Rated Operational Current (Iu): 25 A
- Operating Power at AC-23A (400 V): 9.5 kW
- Insulation Voltage: 690 V
- Surge Voltage Resistance: 6 kV
- Protection Class: IP65
- Mounting Type: Front mounting with 4-hole attachment
- Actuator Type: Rotary, black
- Dimensions: 84 mm (Height) x 67 mm (Width) x 92.5 mm (Depth)
- Mechanical Service Life: 100,000 operating cycles
- Electrical Endurance at AC-23A (690 V): 6,000 operating cycles
- Operating Frequency: Up to 50 operations per hour
- Ambient Operating Temperature: -25°C to +55°C
Applications
- Industrial Automation Systems: Functions as a highly dependable main switch for machinery and complex equipment, ensuring flawless operation.
- Power Distribution Panels: Facilitates secure and efficient power disconnection, vital for upkeep and safety within distribution networks.
- Maintenance and Servicing Operations: Acts as an essential maintenance or repair switch, protecting personnel during equipment servicing.
- Critical Safety Installations: Serves as a primary safety switch in various industrial control systems, preventing accidents and ensuring compliance.
- Heating, Ventilation, and Air Conditioning (HVAC): Ideal for managing power to large HVAC units in commercial and industrial settings.
Why Choose the 3LD2103-0TK51?
- Exceptional Durability and Reliability: Engineered for superior endurance and consistent, high-performance operation in the most demanding industrial environments.
- Simplified and Quick Installation: Features a front mounting design with a straightforward 4-hole attachment, significantly reducing installation time and effort.
- Outstanding Environmental Protection: The IP65 rating ensures unparalleled durability and longevity against harsh environmental factors such as dust and water.
- Comprehensive Functional Versatility: Offers a multifaceted solution, suitable for a wide range of applications including main control, emergency stop, safety, and maintenance switching.
- Trusted Siemens Quality: Benefit from the renowned engineering excellence and reliability of Siemens, a global leader in industrial technology.
Availability & Shipping
- ▸In stock: 3LD2103-0TK51 ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every 3LD2103-0TK51 ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Siemens
Machine down? We ship parts the same day.
New, surplus, and refurbished Siemens inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.