6EP4437-8FB00-0CY0
Condition Options
How to Order or Request a Quote
Buy/Add to Cart Option
Purchase multiple part numbers and select from available conditions (Refurbished, New, etc.) in a single order.
Parts listed as "Ask" in the quantity field may still be available—add them to your cart to receive a quote.
Out-of-stock parts or those with limited availability can also be quoted. Our sales team will follow up promptly.
Need More?
When available stock is less than the quantity you need, please add the desired quantity to your cart and proceed with checkout to get a quote.
Have questions? Reach out to us for assistance—we’re here to help.
Express Quote
Use the Express Quote button to request pricing fast. (Available as a guest or logged in to your account)
Perfect for "Ask" quantity items or if you need more than what is listed.
If the price is listed, you will receive a quote immediately. If not, you will get a quote within 1–2 business days.
Our 2-year warranty is provided on all surplus parts.
Frequently Asked Questions
What does "Ask" mean?
"Ask" means pricing isn't listed. Submit a quote for pricing.
Can I order if the stock is low or out of stock?
Yes. Add the items to your cart for the desired quantity—our team will check for availability and pricing.
Can I mix conditions or part numbers?
Yes! Add multiple parts with different conditions into one quote when using the request quote button in your cart.
Do I need an account?
No. You can request quotes or order as a guest.
How long do quotes take?
Immediately, when the price is listed. Otherwise, quotes are typically returned within 1–2 business days.
Condition Levels
Used/Refurbished - These parts have been previously used, but are in good condition and clean. They have been refurbished but may have minor cosmetic or superficial flaws.
New Without Package - These parts are new. They have not been used, but their original packaging is no longer available.
New In Opened Package - These parts are new. They have not been used, but their original packaging has been opened or the packaging is significantly aged.
New In Sealed Package - These parts are new. They have not been used and still have their original package seal intact.
New in Original Package - These parts are new. The packages were not originally sealed by their original manufacturer.
Factory New - These are new and current items that are procured from the manufacturer.
Repair Service - Classic Automation will repair your item for the price and turnaround time listed.
See “Repair information” on this page for how to request an RMA Authorization/Quote
Note: Some items may not include all factory new accessories such as mounting brackets, connectors, keys, manuals, CDs, etc. Surplus parts might not be the most recent version, revision or date code currently offered by the original vendor.
Request a Quote
Request Repair Authorization
Part Number:
What Happens Next?
-
Step 1
You will receive an email with shipping instructions and your RA number.
-
Step 2
Print the RA email and include it in your shipment.
-
Step 3
Clearly label the box with your RA number.
-
Step 4
Securely pack the item and include a description of the issue.
-
Step 5
Ship your item to the address provided in the email.
Your Request Has Been Successfully Submitted!
Thank you! Your quote request has been submitted. You can track the status on the Quote page
Description
Overview
The 6EP4437-8FB00-0CY0 is a Siemens SITOP SEL1600 expansion module, part of the SITOP SEL1600 selectivity system, designed to expand the number of protected 24 V DC output circuits in industrial power distribution. It provides four protected outputs with adjustable current limits, integrates with the SITOP SEL1600 basic module via IO-Link, and includes the necessary connection set for easy system integration.
Key Specifications
Applications
- Selective overload and short-circuit protection in 24 V DC industrial power distribution systems
- Expansion of SITOP SEL1600 systems in machinery and automation controllers
- Integration into modular power distribution with diagnostics via IO-Link
Explore our complete range of automation products — from PLC modules to HMIs, power supplies, drives, and more. We supply parts from leading global manufacturers including Siemens, Allen-Bradley, ABB, Omron, B&R, Mitsubishi, GE – General Electric, Phoenix Contact, Modicon, Lenze, Schneider, Automation Direct, SICK, Honeywell, Banner (Banner Engineering), FANUC, Parker, Beckhoff, Moore, SEW EURODRIVE, Yaskawa, Yokogawa and more.
Browse All Parts →Why Choose Classic Automation
When it comes to industrial automation, reliability, speed, and trust matter. At Classic Automation, we go beyond just supplying parts — we deliver confidence.
- Extensive Inventory Reach: Nearly 1 million automation parts at your fingertips, including legacy and obsolete models.
- 20+ Years of Expertise: Trusted by engineers and maintenance teams worldwide for our deep industry knowledge.
- Quality You Can Trust: Each unit is tested and refurbished to meet the highest performance standards.
- Fast Global Shipping: We help you minimize downtime with express logistics worldwide.
- 2-Year Warranty Available: Peace of mind with every purchase backed by extended warranty options.
Whether you're maintaining legacy systems or building future-ready operations, Classic Automation is your dependable partner in precision and performance.
Shipping Information
Ships from Webster, NY USA
Requesting Your Repair/Repair Quotes
Repair Options can be used to obtain a repair authorization as a 'Guest' or logged into your 'Customer Account'
Add to Repair Cart
Using the 'Add to Repair Cart' option will add the specified quantity of repairable parts to your cart.
Use this when submitting multiple part numbers for your repair quote.
Follow the instructions in the email you provided to send in your repairs for a free evaluation.
(Note: Repair quote options are only available if there are no non-repairable parts in your cart or through the express quote option.)
Repair Now
Using the 'Repair Now' option allows you to submit a repair of your desired quantity for a single part number.
Fill out the information and follow the repair shipping instructions sent to the email you provided.
Find a copy of your express quote in your account or email.
The Repair Proccess
At Classic Automation, the industrial parts repair process focuses on functional testing. High-quality, comprehensively tested repairs are made with system-specific test fixtures. Hundreds of different testing fixtures are used to meet the variety of tests required, and all repaired items have a 2-year warranty.
Advanced diagnostic tools are used to quickly pinpoint the root problem. State-of-the-art equipment is available to replace high-density components for:
Control Systems Repair (DCS, PLC, CNC)
Panel Controllers Repair
HMI and Display Panels Repair
Industrial PCs Repair
Drives Repair (Inverter and Servo)
Power Supply Repair
As a preventive maintenance measure, all components subject to high degradation with age, such as electrolytic capacitors and NVRAM, are replaced. Great care is taken to retain application programs and data parameters.
Fixed-prices for repair services are offered. For many parts listed you can generate your own repair quote and repair authorization online.
If pricing is not listed, fast no-cost evaluation can be made to determine the repair pricing. In these cases, you will be contacted for approval prior to us starting any repairs.
Back-up and Documentation Services
Services to load, backup, or document your application programs are also available for a very wide range of control systems, panels, and drives. We can accept files via e-mail or may be able to upload them from equipment sent in for repair. Please contact us for additional details for your specific equipment.
Classic Automation provides high-quality, functionally tested industrial parts repair with system-specific test fixtures and a 2-year warranty.
Visit our Repair Page for an in depth overview of the repair process
Condition Levels
Used/Refurbished - These parts have been previously used, but are in good condition and clean. They have been refurbished but may have minor cosmetic or superficial flaws.
New Without Package - These parts are new. They have not been used, but their original packaging is no longer available.
New In Opened Package - These parts are new. They have not been used, but their original packaging has been opened or the packaging is significantly aged.
New In Sealed Package - These parts are new. They have not been used and still have their original package seal intact.
New in Original Package - These parts are new. The packages were not originally sealed by their original manufacturer.
Factory New - These are new and current items that are procured from the manufacturer.
Repair Service - Classic Automation will repair your item for the price and turnaround time listed.
See “Repair information” on this page for how to request an RMA Authorization/Quote
Note: Some items may not include all factory new accessories such as mounting brackets, connectors, keys, manuals, CDs, etc. Surplus parts might not be the most recent version, revision or date code currently offered by the original vendor.
2‑Year Warranty on Surplus Parts & Repairs
Inventory levels are correct. Add items to your cart to order or request a quote.
Why Choose Classic Automation?
Classic Automation provides reliable solutions for legacy and new automation equipment. With over 20 years of expertise and nearly 1 million parts in stock, we help minimize downtime and keep your systems running.
Questions? Call +1 585‑241‑6010 or email sales@classicautomation.com
Request a Quote
Request Repair Authorization
Part Number:
What Happens Next?
-
Step 1
You will receive an email with shipping instructions and your RA number.
-
Step 2
Print the RA email and include it in your shipment.
-
Step 3
Clearly label the box with your RA number.
-
Step 4
Securely pack the item and include a description of the issue.
-
Step 5
Ship your item to the address provided in the email.
Your Request Has Been Successfully Submitted!
Thank you! Your quote request has been submitted. You can track the status on the Quote page
20 Years of Excellence in Industrial Automation Supply
For over 20 years, Classic Automation has been a trusted leader in the industrial automation supply industry. As a dependable automation parts supplier, we’ve expanded our product lines, grown a global customer base, and earned repeated recognition as a Rochester Top 100 company.
Our long-standing success reflects our commitment to quality, reliability, and customer satisfaction. Whether you're sourcing hard-to-find components or need expert repairs, Classic Automation stands out among industrial automation parts suppliers for our experience, service, and unbeatable 2-year warranty.
Unbeatable 2-Year Warranty on Refurbished Industrial Automation Parts & Repairs
When it comes to industrial automation supply, Classic Automation leads the way with exceptional quality and reliability. All of our refurbished parts and repair services are backed by an unbeatable 2-year warranty, giving you the confidence you deserve when choosing an automation parts supplier.
As one of the most trusted industrial automation parts suppliers, we understand the importance of dependable performance. That’s why we go beyond industry standards—offering a 2-year warranty that outperforms typical coverage. Whether you're replacing obsolete components or maintaining critical systems, Classic Automation provides the high-quality parts and expert repairs you need.
Choose Classic Automation
Emergency Shipping Available for Industrial Automation Parts
Downtime can cost you time and money—Classic Automation is here to help. As a reliable automation parts supplier, we offer emergency shipping to get critical components to you fast and minimize disruptions.
With two decades of experience in industrial automation supply, we understand how vital speed and reliability are. That’s why we're proud to be one of the few industrial automation parts suppliers offering urgent shipping options to keep your operations running smoothly.
Need it now? Count on Classic Automation for fast, dependable emergency delivery backed by our unbeatable 2-year warranty.
Can't Find Your Part Number
Or Specific Conditions?
Can’t find your exact part number? Our experienced sales and customer service teams are here to help. From hard-to-find part numbers to complex repair needs, we’re ready to assist. We’ll help you keep production running.
Classic Automation is not an authorized distributor unless otherwise specified, representative, or affiliate of the manufacturer of this product. All trademarks and documents are the property of their respective owners and are provided for identification and informational.