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Siemens 3SB3400-0A
by Siemens
Read verified buyer reviews ↓OverviewThe Siemens 3SB3400-0A Contact Block is an essential component designed for robust and dependable industrial control setups. Crafted for precision and longevity, this contact block effortlessly integrates into numerous applications, facilitating efficient and secure switching operations. It provides a flexible configuration of one Normally Open (NO) and one Normally Closed (NC) contact, offering exceptional adaptability for various control circuit designs. Its construction emphasizes straightforward front plate mounting, ensuring that installation and maintenance are both secure and remarkably efficient. The inclusion of carefully engineered screw terminals further enhances its appeal, guaranteeing electrical connections that are strong and highly trustworthy, even in the most challenging operational environments. This contact block is an excellent selection for professionals aiming to optimize their industrial automation, machine control, and process control systems with a premium, durable, and reliable switching solution.Key Features Dual Contact Arrangement: Outfitted with both 1 Normally Open (NO) and 1 Normally Closed (NC) contact, delivering outstanding versatility for intricate control schemes and interlocking functionalities. Front Panel Mounting: Engineered for intuitive and quick front panel installation, streamlining the setup process within control panels and operator stations, saving valuable time. Secure Screw Terminals: Incorporates high-quality screw terminals that ensure a consistently dependable and secure electrical connection, minimizing fault risks and enhancing operational safety. Compact and Efficient Design: Its optimized, space-saving form factor allows for seamless integration into diverse control configurations, making it an ideal choice for systems where panel space is at a premium. High Thermal Current Rating: Boasts a robust 10 A thermal current rating, confirming its capacity to manage significant electrical loads safely and efficiently during continuous operation. IP20/IP40 Protection: Provides a degree of protection at IP20 for the terminals and IP40 for the enclosure, guarding against environmental intrusion and improving durability. Broad Operating Temperature Range: Operates flawlessly across a wide temperature spectrum, from -25°C to +70°C, ensuring consistent performance in varied industrial settings. Technical Specifications Product Category: Contact Block Part Number: 3SB3400-0A Contact Configuration: 1 Normally Open (NO) + 1 Normally Closed (NC) Installation Type: Front Plate Mounting Terminal Type: Screw Terminals Thermal Current Rating: 10 A Insulation Voltage: 400 V Surge Voltage Resistance: 4 kV Protection Level: IP20 (Terminal), IP40 (Enclosure) Operating Temperature Range: -25°C to +70°C Standard Compliance: UL Listed, CSA Certified, IEC/EN Compliant Applications Industrial Automation Systems: Crucial for establishing reliable and responsive control circuits, supporting vital automation processes across various sectors. Machine Control Panels: Perfectly suited for implementing essential start/stop commands, emergency stops, and complex interlocking functions in machinery. Process Control Systems: Boosts the reliability and efficiency of control loops in diverse industrial processes, from manufacturing to energy management. HVAC and Building Management: Ideal for integration into heating, ventilation, air conditioning, and comprehensive building management systems for precise control. Safety and Emergency Circuits: Can be utilized in safety-critical applications requiring dependable disconnection or activation, owing to its robust contact configuration. Why Choose This Model?Unmatched Reliability: Manufactured by Siemens, a global leader in industrial technology, ensuring exceptional quality and long-term operational dependability for demanding applications.Versatile Functionality: The combination of NO and NC contacts in a single unit offers unparalleled flexibility for designing complex and efficient control systems.Order NowElevate your industrial control systems with the Siemens 3SB3400-0A Contact Block. Contact us today to place your order and integrate this high-performance component into your operations.FAQWhat is the contact configuration of the Siemens 3SB3400-0A?It features a 1 Normally Open (NO) and 1 Normally Closed (NC) contact configuration, offering versatile switching options.What is the thermal current rating for this contact block?The thermal current rating is 10 A, making it suitable for handling significant electrical loads.What is the operating temperature range?This contact block operates efficiently across a wide range, from -25°C to +70°C.How is the Siemens 3SB3400-0A mounted?It is designed for intuitive and rapid front plate mounting, simplifying installation.What protection levels does this product offer?It offers IP20 protection for the terminals and IP40 for the enclosure, safeguarding against environmental ingress.
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Siemens 3SB3400-0A
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 Category: Contact Block
- Part Number: 3SB3400-0A
- Contact Configuration: 1 Normally Open (NO) + 1 Normally Closed (NC)
- Installation Type: Front Plate Mounting
- Terminal Type: Screw Terminals
- Thermal Current Rating: 10 A
- Insulation Voltage: 400 V
- Surge Voltage Resistance: 4 kV
- Protection Level: IP20 (Terminal), IP40 (Enclosure)
- Operating Temperature Range: -25°C to +70°C
- Standard Compliance: UL Listed, CSA Certified, IEC/EN Compliant
Applications
- Industrial Automation Systems: Crucial for establishing reliable and responsive control circuits, supporting vital automation processes across various sectors.
- Machine Control Panels: Perfectly suited for implementing essential start/stop commands, emergency stops, and complex interlocking functions in machinery.
- Process Control Systems: Boosts the reliability and efficiency of control loops in diverse industrial processes, from manufacturing to energy management.
- HVAC and Building Management: Ideal for integration into heating, ventilation, air conditioning, and comprehensive building management systems for precise control.
- Safety and Emergency Circuits: Can be utilized in safety-critical applications requiring dependable disconnection or activation, owing to its robust contact configuration.
Why Choose the 3SB3400-0A?
Unmatched Reliability: Manufactured by Siemens, a global leader in industrial technology, ensuring exceptional quality and long-term operational dependability for demanding applications.
Versatile Functionality: The combination of NO and NC contacts in a single unit offers unparalleled flexibility for designing complex and efficient control systems.
Availability & Shipping
- ▸In stock: 3SB3400-0A 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 3SB3400-0A 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.
Related Siemens resources
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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.