Reliance S-D4039 Industrial Control Module

Designed for precision automation in harsh environments, the Reliance S-D4039 control module delivers rock-solid performance in motor control and system synchronization applications. We’ve seen it excel in steel mill conveyor systems where vibration resistance and 24VDC reliability make all the difference. One customer in Houston reported 40% faster response times after upgrading their bottling line controls with this module.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Reliance Electric (Rockwell Automation) |
| Model Number | S-D4039 |
| Voltage Rating | 24V DC nominal |
| Output Frequency | 10 kHz switching capability |
| Certifications | UL 508, CE, RoHS |
| Operating Temp | -20°C to +70°C |
| Mounting | DIN rail compatible |

Our warehouse stocks both standard and custom-configured units for immediate dispatch. This module shines in applications like:
- High-speed packaging machinery control
- Automotive assembly line robotics
- Food processing equipment with washdown requirements
- Energy monitoring systems with precision timing needs
We regularly handle related Rockwell components including 1756 I/O modules, 2711P touchscreens, and GuardLogix safety controllers. Last month alone, we shipped 12 complete control panels featuring this module to a Midwest automotive supplier.
Why Choose Our Service

With 16 regional warehouses across 6 countries, we maintain 98% same-day dispatch rates. Every unit comes with our standard 12-month warranty – double what most competitors offer. Our engineers provide free pre-installation consultations, and we keep detailed cross-reference charts for legacy Reliance systems dating back to the 1990s.
Need pricing for bulk quantities or customized configurations? WhatsApp our team or email abbokok@gmail.com – response time typically under 2 hours during business hours. We’ll include full technical documentation and recommended spare parts清单 with every quote.
Customer Note: “Used this module for a retrofit project on our Cincinnati press brakes. The built-in diagnostic LEDs saved us 3 hours troubleshooting time compared to older models.” – Maintenance Manager, Chicago Manufacturing Co.








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