"Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime"
3TX4420-2A Siemens
Based on over 4900 reviews
Adding another part to your enquiry?
After submitting this form, you can add additional part numbers and quantities using the quote builder on the next page. A member of our team will then be in touch to discuss your quote.
Key specifications
Manufacturer
Siemens
HS code
85365080
Ship to
Egypt
Availability
16 remaining
Express delivery to your country
Full 12-month warranty
Secure payment process
What happens next?
From enquiry to delivery, we keep it simple.
Submit your enquiry
Tell us what you need using the form above and we'll manage your procurement needs with speed and care.
Confirmation and sourcing
An account manager will contact you within a few hours and use our unique parts database to find your components at a competitive price.
Receive your quote
Your account manager will provide a tailored quote outlining availability and delivery dates.
Place your order
Your order ships quickly from one of our global logistics hubs, with updates provided every step of the way.
The Siemens 3TX4420-2A is a high-quality auxiliary contact block designed for seamless integration with contactor relays and motor contactors. This component is engineered to meet the stringent standards set by EN 50005, featuring an identification number 20 and equipped with 2 normally open (NO) contacts. Crafted for durability and reliability, the 3TX4420-2A boasts an impressive mechanical operating life of approximately 10 million cycles, ensuring long-term performance in a variety of industrial settings. The auxiliary contact block operates within an ambient temperature range of -25°C to +55°C, making it suitable for use in diverse environmental conditions. With an insulation voltage rated at 690V and an impulse voltage resistance of 6kV, this auxiliary contact block is built to maintain integrity and safety under high-voltage conditions. The screw-type terminals provide a secure and reliable electrical connection for auxiliary and control current circuits, accommodating a range of conductor cross-sections for flexible installation options. The 3TX4420-2A is designed with a snap-on mounting type, which allows for quick and easy installation onto existing systems, reducing downtime and simplifying maintenance procedures. Its compact dimensions, with a width of 45mm, height of 24mm, and depth of 25mm, ensure that it can be integrated into space-constrained environments without compromising on functionality. This auxiliary contact block is also compliant with positively driven operation according to IEC 60947-5-1, reinforcing its status as a safe and dependable choice for enhancing the control capabilities of your electrical systems. Whether used in manufacturing, automation, or other industrial applications, the Siemens 3TX4420-2A auxiliary contact block is a versatile and essential component for modern electrical installations.
Typical applications
- Integration into motor control circuits for auxiliary switching functions
- Use in contactor relays for additional switching operations
- Implementation in control panels for extending control logic
- Application in automation systems for interlocking and sequencing
- Utilisation in conveyor systems for start/stop operations
- Inclusion in HVAC systems for auxiliary fan or pump control
- Deployment in manufacturing equipment for signalling and safety interlocks
- Installation in electrical distribution systems for control and monitoring
- Incorporation in packaging machinery for precision control tasks
- Adaptation in material handling systems for auxiliary motion control
Need more information?
Our global network and dedicated team act fast to keep your supply chain moving.
Contact usCan't find what you're looking for?
Find answers, guidance and resources to help you get the most out of our services.
Support centreOrder and delivery information
Need more information?
Our global network and dedicated team act fast to keep your supply chain moving.
Contact usCan't find what you're looking for?
Find answers, guidance and resources to help you get the most out of our services.
Support centreSupporting new and legacy automation
Whether you're maintaining existing equipment or sourcing parts for current systems, we provide fast, dependable supply you can rely on.
50+ account managers available now
What our customers say
"Alex Bailey is my main point of contact at EU Automation...he is extremely friendly, has exceptional customer service skills and always offers great pricing & lead times."
"Tom Higgins provided great prompt service. I contacted Tom by phone and within 10 minutes there was a quote in my in box. WOW Thank you Tom and Thank you EU Automation!"
"Excellent service and communication from Alex Bailey. He truly goes above and beyond to ensure his clients are 100% satisfied. The entire process was seamless, and his attention to detail made a huge difference. Highly recommended for anyone looking for amazing service!"
"Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping. "
"Thomas Higgins has gone above and beyond to make things happen for my facility. His customer service and knowledge were an asset in helping me with my order and the logistics challenges! "
Related parts
FAQs
Your parts delivered, hassle free
We take care of the logistics so you don't have to. From customs documentation to real-time tracking, our service ensures your parts arrive on time, every time. Reliable, straightforward delivery you can trust.
Full 12-month warranty
ISO 9001:2015 certified
Swift global delivery
"The prompt delivery knowing it was urgent was amazing! We are confident when EU Automation says they will try to ship as soon as possible they really mean it. Our company will definitely use them again. Service is astounding."
Courtney Zeinert
Facilities Manager
Speak to our team
Whether you need advice or help finding the right part, our team is available to assist and keep your operations running smoothly.