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Siemens 3LD2003-0TK53
by Siemens
Read verified buyer reviews ↓OverviewThe Siemens 3LD2003-0TK53 SENTRON 3LD Emergency-Stop Switch Disconnector is a vital safety component crafted for demanding industrial environments. This sturdy 3-pole switch disconnector delivers dependable isolation of electrical circuits, ensuring workplace security during maintenance, unexpected events, or emergencies. With a rated operational current of 16 A and the capability to manage motor loads up to 7.5 kW at 400 V in AC-23A utilization category, it is engineered for high-performance applications where immediate power disconnection is crucial. Its intuitive front-mounted design, complete with a highly visible red/yellow rotary actuator, offers clear visual indication of its status and enables quick, decisive operation, making it an indispensable part of any comprehensive industrial safety strategy.Key Features High Current Capacity: A rated operational current of 16 A guarantees reliable performance across diverse industrial uses. Powerful Motor Load Handling: Manages up to 7.5 kW at 400 V (AC-23A) and 5.5 kW at 400 V (AC-3), accommodating significant motor loads with efficiency. Broad Voltage Compatibility: Supports insulation voltage up to 690 V and operational voltage up to 690 V AC at 50/60 Hz. Intuitive Emergency-Stop Mechanism: Features a front-mounted arrangement with a prominent red/yellow rotary actuator for instant recognition and activation. Superior Environmental Resistance: An IP65 protection rating on the front ensures dust-tight and water-resistant operation, perfect for harsh conditions. Exceptional Longevity: Built for extended use with a mechanical lifespan of up to 100,000 operating cycles and an electrical endurance of approximately 6,000 cycles at AC-23A 690 V. Compliance and Assurance: Adheres to relevant international standards for switch disconnectors and emergency-stop devices, confirming global applicability and safety. Technical Specifications Product Number: 3LD2003-0TK53 Brand: Siemens Type: SENTRON 3LD Emergency-Stop Switch Disconnector Number of Poles: 3 Rated Operational Current (Ie): 16 A Rated Power (AC-23A, 400 V): 7.5 kW Rated Power (AC-3, 400 V): 5.5 kW Insulation Voltage (Ui): 690 V Operational Voltage (Ue): Up to 690 V AC at 50/60 Hz Mounting Type: Front-mounted with 4-hole attachment Actuator Type: Rotary knob, red/yellow Protection Class (Front): IP65 Dimensions (H x W x D): 84 mm x 67 mm x 92.5 mm Operating Temperature Range: -25°C to +55°C Mechanical Endurance: 100,000 operating cycles Electrical Endurance (AC-23A, 690V): 6,000 operating cycles Applications Industrial Machinery: Provides an essential safety interlock, allowing for swift power disconnection during maintenance, repairs, or unexpected machinery faults. Control Panels: Offers a dependable and highly visible means of isolating electrical circuits within intricate control systems, improving operator safety and system integrity. Conveyor Systems: Critical for immediate shutdown capabilities, safeguarding personnel from moving parts and preventing damage to materials or equipment in automated production lines. HVAC Systems: Facilitates safe and compliant maintenance procedures by enabling quick and secure emergency disconnection of heating, ventilation, and air conditioning equipment. Manufacturing Plants: Integral to overall plant safety protocols, allowing for rapid response to electrical hazards across diverse production lines. Process Automation: Essential for safety and operational control in automated processes where rapid system shutdown might be required. Why Choose Uncompromising Safety: Designed specifically for emergency-stop functions, providing immediate and reliable power cut-off when it matters most. Robust Industrial Construction: Built to endure harsh industrial environments with an IP65 front rating, guaranteeing longevity and consistent performance. Trusted Siemens Quality: Benefit from Siemens' reputation for engineering excellence, ensuring a high-quality, dependable product. Effortless Operation: Features a design meant for easy recognition and use in critical situations. Order NowSecure your industrial operations with the Siemens 3LD2003-0TK53 Emergency-Stop Switch Disconnector. Contact us for pricing and availability.FAQWhat is the primary function of the Siemens 3LD2003-0TK53?Its main purpose is to serve as an emergency-stop switch disconnector, providing immediate and reliable isolation of electrical circuits in industrial settings to ensure safety.What is the maximum current rating for this device?The Siemens 3LD2003-0TK53 has a rated operational current of 16 Amperes.Can this switch disconnector handle motor loads?Yes, it can efficiently manage motor loads up to 7.5 kW at 400 V in AC-23A category and 5.5 kW at 400 V in AC-3 category.What kind of environmental protection does it offer?It features an IP65 protection rating on the front, making it dust-tight and resistant to water jets, suitable for harsh environments.How is the switch activated?It is activated via a front-mounted red/yellow rotary actuator, designed for clear visibility and rapid operation in emergencies.
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Siemens 3LD2003-0TK53
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
- Product Number: 3LD2003-0TK53
- Brand: Siemens
- Type: SENTRON 3LD Emergency-Stop Switch Disconnector
- Number of Poles: 3
- Rated Operational Current (Ie): 16 A
- Rated Power (AC-23A, 400 V): 7.5 kW
- Rated Power (AC-3, 400 V): 5.5 kW
- Insulation Voltage (Ui): 690 V
- Operational Voltage (Ue): Up to 690 V AC at 50/60 Hz
- Mounting Type: Front-mounted with 4-hole attachment
- Actuator Type: Rotary knob, red/yellow
- Protection Class (Front): IP65
- Dimensions (H x W x D): 84 mm x 67 mm x 92.5 mm
- Operating Temperature Range: -25°C to +55°C
- Mechanical Endurance: 100,000 operating cycles
- Electrical Endurance (AC-23A, 690V): 6,000 operating cycles
Applications
- Industrial Machinery: Provides an essential safety interlock, allowing for swift power disconnection during maintenance, repairs, or unexpected machinery faults.
- Control Panels: Offers a dependable and highly visible means of isolating electrical circuits within intricate control systems, improving operator safety and system integrity.
- Conveyor Systems: Critical for immediate shutdown capabilities, safeguarding personnel from moving parts and preventing damage to materials or equipment in automated production lines.
- HVAC Systems: Facilitates safe and compliant maintenance procedures by enabling quick and secure emergency disconnection of heating, ventilation, and air conditioning equipment.
- Manufacturing Plants: Integral to overall plant safety protocols, allowing for rapid response to electrical hazards across diverse production lines.
- Process Automation: Essential for safety and operational control in automated processes where rapid system shutdown might be required.
Why Choose the 3LD2003-0TK53?
- Uncompromising Safety: Designed specifically for emergency-stop functions, providing immediate and reliable power cut-off when it matters most.
- Robust Industrial Construction: Built to endure harsh industrial environments with an IP65 front rating, guaranteeing longevity and consistent performance.
- Trusted Siemens Quality: Benefit from Siemens' reputation for engineering excellence, ensuring a high-quality, dependable product.
- Effortless Operation: Features a design meant for easy recognition and use in critical situations.
Availability & Shipping
- ▸In stock: 3LD2003-0TK53 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 3LD2003-0TK53 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.