ED1251A HEIA303892R1

Description

1. Product Description

2. Key Technical Parameters

Parameter	Specification
Brand	ABB (Sweden)
Model	ED1251A HEIA303892R1
Function	Ground Fault Relay
Voltage Rating	24–240V AC/DC (wide-range compatibility)
Current Rating	Up to 600A (depending on configuration)
Interface	Plug-and-play terminals
Dimensions	1.5 x 20 x 30.2 cm
Weight	0.28 kg
Certifications	CoCq, CE, RoHS
Mounting	DIN rail or panel-mounted

ED1251A HEIA303892R1

3. Advantages and Characteristics

• High Reliability: Fast fault detection (≤10ms response time) and redundant circuitry prevent false tripping, ensuring stable operation in industrial settings.
• Compact Design: Space-saving dimensions (1.5 x 20 x 30.2 cm) allow easy integration into tight control panels.
• Factory-Sealed Integrity: New, original packaging with anti-dust and moisture protection for long-term storage and use.
• Wide Compatibility: Supports multiple voltage ranges (24–240V AC/DC) and integrates seamlessly with ABB’s industrial control systems.
• Cost-Effective: Reduces downtime by up to 40% compared to legacy systems, as proven in manufacturing plant case studies.

4. Application Areas and Cases

• Industries: Manufacturing, energy, water treatment, and machinery automation.
• Scenarios: Motor protection, power distribution networks, and equipment grounding systems.
• Case Study: A textile factory in Germany reduced unplanned outages by 35% after deploying the ED1251A HEIA303892R1 to protect their spindle motors. The relay’s quick fault isolation minimized production losses and improved safety compliance.

5. Competitor Comparison

• Faster Response: 10ms vs. industry-standard 15–20ms.
• Broader Voltage Range: 24–240V AC/DC vs. limited 100–240V options.
• Integrated Safety Features: Built-in diagnostics and self-test functionality, uncommon in entry-level models.
  

  ED1251A HEIA303892R1

6. Selection Recommendations

• Compatibility: Verify voltage/current ratings match your system (e.g., 24V DC for low-voltage setups).
• Installation Space: Ensure panel dimensions accommodate the 1.5 x 20 x 30.2 cm module.
• Budget: Balance cost with features—this model offers premium reliability at a mid-range price point.
• Future Expansion: Choose DIN rail mounting for easy scalability in modular systems.

7. Precautions

• Installation: Follow ABB’s wiring guidelines (use torque-controlled terminals for secure connections).
• Environment: Avoid extreme temperatures (+50°C max) and corrosive environments.
• Maintenance: Regularly inspect for dust buildup; clean with a dry cloth (do not use solvents).
• Safety: Disconnect power before servicing; comply with local electrical codes.