Allen-Bradley 193-EC2DD Electronic Overload Relay | Replacement, Equivalent & Selection Guide
The Allen-Bradley (Rockwell Automation) 193-EC2DD is an electronic overload relay designed for motor protection in industrial automation systems. This page provides full technical specifications, compatible replacement models, cross-reference equivalents, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Part Number | 193-EC2DD |
| SKU | 193EC2DD |
| Product Type | Electronic Overload Relay |
| Series | 193-E (E3 Plus) |
| Trip Class | Class 10 / Class 20 (selectable) |
| Current Range | Refer to official datasheet for exact ampere range |
| Supply Voltage | 100–240V AC / 24V DC (DeviceNet powered) |
| Communication | DeviceNet |
| Protection Features | Overload, Phase Loss, Phase Imbalance, Ground Fault, Thermistor Input |
| Mounting | Direct mount to 100-C / 104-C contactors or stand-alone |
| Weight | 560 g |
| Certifications | UL, CE, CSA |
Note: Always verify specifications against the official Rockwell Automation datasheet before final selection.
Compatible Replacement & Equivalent Models
The following models are commonly referenced as replacements or equivalents for the 193-EC2DD. Compatibility depends on your specific application parameters — consult the selection guide below before substituting.
| Brand | Model | Notes |
|---|---|---|
| Allen-Bradley | 193-EC2DB | Same series, different current range — verify ampere rating |
| Allen-Bradley | 193-EC2DC | Same series, different current range |
| Allen-Bradley | 193-ECPM | Upgraded E3 Plus with expanded diagnostics |
| Siemens | 3RB3026-1SB0 | Electronic overload, comparable protection functions |
| Schneider Electric | LR9F5369 | TeSys electronic overload relay, verify current range |
| Eaton / Moeller | PKE12-PKZ0 | Electronic motor protection relay, verify mounting compatibility |
⚠ Disclaimer: Cross-reference equivalents are provided for reference only. Always verify electrical ratings, mounting dimensions, and communication protocols before substitution.
Why Choose the Original Model
- Seamless Rockwell Integration: Native DeviceNet communication for direct integration with Allen-Bradley PLCs (ControlLogix, CompactLogix, MicroLogix).
- Advanced Diagnostics: Real-time motor current monitoring, fault history logging, and predictive maintenance data via RSLogix/Studio 5000.
- Flexible Protection: Selectable trip class (10/20), ground fault detection, and thermistor input in a single compact unit.
- Proven Reliability: Widely deployed in automotive, food & beverage, water treatment, and heavy industry globally.
- Direct Contactor Mounting: Designed for tool-free direct mounting to 100-C series contactors, reducing panel space and wiring complexity.
Typical Applications
- Motor starter panels in manufacturing and process automation
- Pump and compressor motor protection
- HVAC fan and blower control systems
- Conveyor and material handling equipment
- Water and wastewater treatment facilities
- Oil & gas upstream and downstream motor control centers (MCCs)
System Compatibility
- PLC Platforms: Allen-Bradley ControlLogix, CompactLogix, MicroLogix (via DeviceNet scanner)
- Contactor Series: 100-C09 through 100-C85 (direct mount); 104-C (reversing starters)
- Software: RSLogix 5000 / Studio 5000, RSNetWorx for DeviceNet
- Network: DeviceNet (Group 2 Only Server)
- Enclosures: Compatible with standard NEMA / IEC motor control center (MCC) buckets
Selection Guide
Use the following criteria to confirm the 193-EC2DD is the correct model for your application, or to identify the appropriate replacement:
- Motor FLA (Full Load Amps): Match the relay’s current range to your motor’s nameplate FLA. The 193-EC2DD covers a specific ampere band — confirm against the Rockwell catalog.
- Trip Class: Select Class 10 for standard motors; Class 20 for high-inertia loads (fans, pumps with long start times).
- Communication Requirement: If DeviceNet is not available in your system, consider the 193-EC2 (standalone) or 193-ECPM (EtherNet/IP) variants.
- Mounting Configuration: Confirm contactor frame size for direct mount, or select stand-alone mounting kit (193-EMSA).
- Protection Features: If ground fault or thermistor input is required, confirm these are enabled in your firmware configuration.
- Certifications: Verify UL/CE/CSA requirements for your installation region.
Quality Assurance & Sourcing
- ✅ Genuine OEM parts sourced from authorized distributors and verified supply chains
- ✅ Inspection & testing performed prior to shipment — functional verification available on request
- ✅ Traceability documentation provided: lot codes, date codes, and certificates of conformance
- ✅ Anti-counterfeit measures: All Allen-Bradley products verified against Rockwell Automation authenticity standards
- ✅ Warranty: 12-month warranty against manufacturing defects
How to Order
- Confirm your motor FLA and required current range from the product datasheet.
- Add the 193-EC2DD to your cart, or contact us for bulk/project pricing.
- Provide your PO number, delivery address, and any special requirements (e.g., expedited shipping, inspection reports).
- Our team will confirm availability, lead time, and dispatch within 1 business day.
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Replacement & Compatibility FAQ
Q: Can I replace the 193-EC2DD with a 193-EC2DB?
A: Both are in the same 193-E series, but they cover different current ranges. Verify that the DB variant’s ampere range matches your motor’s FLA before substituting.
Q: Is the 193-EC2DD compatible with EtherNet/IP?
A: No. The EC2DD communicates via DeviceNet. For EtherNet/IP, consider the 193-ECPM or 825-P series.
Q: Can I use a Siemens 3RB3 as a direct replacement?
A: Electrically similar protection functions exist, but mounting dimensions, communication protocol, and contactor compatibility differ. A direct drop-in replacement is not guaranteed — engineering review is required.
Q: Do you supply new, refurbished, or surplus stock?
A: We primarily supply new OEM stock. Surplus or refurbished units may be available for obsolete models — contact us for details.
Q: What is the lead time for the 193-EC2DD?
A: In-stock orders typically ship within 1–3 business days. For large quantities or project orders, contact us for confirmed lead times.
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