Reliance Electric 57C420 PLC DC Output Module – AutoMate Series

Technical Dossier

Product Details And Specifications

The Reliance Electric 57C420 is a DC Output Module designed for the AutoMate PLC platform — a control system widely deployed across discrete manufacturing, material handling, and process automation lines throughout the 1980s and 1990s. As Reliance Electric's industrial automation division was absorbed into Rockwell Automation, the 57C420 transitioned into legacy-parts territory. That classification carries a direct operational implication: every unit still running in your facility represents a single point of failure with a shrinking replacement pool.

Procurement Specifications

Every 57C420 unit shipped by DriveKNMS is subject to the following quality and compliance protocol:

• Functional Testing: Each module is bench-tested against original Reliance Electric output specifications prior to packaging.
• Condition review: Available condition, photos, test records and documentation are checked before quotation according to the requested model.
• Export Documentation: Full commercial invoice, packing list, and certificate of origin issued for every international shipment. HS Code classification provided upon request for customs pre-clearance.
• Multi-Currency Payment: USD, EUR, CNY, and HKD accepted. T/T (wire transfer), PayPal, and trade finance options available for qualified buyers.
• Global Logistics: DHL Express, FedEx International Priority, and UPS Worldwide available. Typical transit: 3–5 business days to North America and Europe; 5–10 days to Southeast Asia and the Middle East.
• Packaging: Anti-static ESD packaging with moisture barrier for all electronic modules. Outer carton rated for international freight handling.

Sourcing a discontinued PLC module from an unfamiliar supplier carries real risk — counterfeit parts, misrepresented condition, and non-compliant documentation are documented problems in the secondary automation market. Here is how DriveKNMS mitigates those risks for your organization:

Q: How are commercial terms confirmed?
A: Commercial terms are confirmed during RFQ review based on model, quantity, destination, documentation and sourcing route.

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Q: Is this part compatible with other Reliance Electric AutoMate PLC configurations?
A: The 57C420 is designed for the AutoMate PLC backplane. Compatibility depends on your specific rack configuration and firmware revision. Our technical team can assist with compatibility verification before purchase.