NEW ARRIVAL: Siemens 5SD440 Surge Protection Device Now Available
Model Description
We are pleased to announce the immediate availability of the Siemens 5SD440 surge protection device, a compact and reliable component engineered for protecting industrial and commercial electrical systems against transient over-voltages. This device is designed for use with Siemens SINAMICS DC converters and rectifiers, providing robust protection for sensitive electronic equipment. The 5SD440 features a rated voltage of 400V AC and is compatible with both single-phase and three-phase systems. Measuring 45mm × 90mm × 70mm and weighing only 0.2kg, the unit integrates seamlessly into control panels for conveyors, pumps, fans, and machine tools where space is at a premium .
Key Features
The 5SD440 delivers exceptional protection performance with a rated surge current of 40kA (8/20µs) and a maximum continuous operating voltage of 440V AC. The device features a response time of <25ns, ensuring fast protection against transient voltages. It provides robust protection for both line-to-line and line-to-earth configurations, with a protection level of <1.5kV. The unit is designed with IP20 protection for both the front and terminals, and operates reliably across –25°C to +60°C ambient range. CE, cULus, CCC and RoHS approvals validate global deployment, and the device is fully compatible with Siemens SINAMICS DC converters for seamless integration .
Related Models in the 5SD Series
The 5SD series offers scalable protection solutions for diverse application requirements. The 5SD450 provides a higher surge current rating of 50kA for more demanding applications, while the 5SD430 offers a lower rating of 30kA for smaller systems. For alternative voltage ratings, the 5SD442 provides protection for 440V AC systems, and the 5SD443 offers protection for 480V AC systems. All variants share identical mounting dimensions, terminal layouts, and accessory compatibility, enabling standardized panel design and reduced inventory complexity .
Our Competitive Advantages
As a dedicated Industrial Automation trader, we provide exceptional procurement flexibility and customer-centric service solutions. Our adaptable payment structures accommodate wire transfer arrangements and customized credit facilities for approved partners, removing financial barriers to urgent maintenance requirements. We maintain significant strategic inventory in regional distribution hubs, enabling delivery within 5-7 business days to most industrial centers worldwide. Our extensive sourcing network spans premium European and Asian sensor distribution channels, ensuring authentic Telemecanique component traceability without geographic restrictions. This multi-channel approach guarantees availability during global supply chain disruptions. Our application engineers provide sensor selection consultation, detection distance calculation, and integration support, assisting with control logic configuration and wiring optimization. Through direct manufacturer partnerships and streamlined logistics, we deliver genuine Telemecanique inductive sensors with accelerated fulfillment cycles and competitive pricing structures.
For immediate quotations or technical consultation, please contact our dedicated sales team.
About Us
We are a focused industrial-automation components trader committed to delivering authentic Siemens SINAMICS solutions with speed, flexibility and technical expertise.