ABB 1SAX201910R0001 DB45EF Overload Relay

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1. Product Overview

The ABB 1SAX201910R0001 DB45EF Overload Relay is an intelligent electronic device for motor protection, providing overload, phase-loss, and short-circuit protection. The DB45EF relay uses electronic detection for precise current monitoring and reliable protection. It can be combined with ABB contactors to provide a complete motor control and protection solution. Its modular design allows easy installation and maintenance, suitable for industrial automation and machinery control applications.

2. Technical Specifications

• Model: 1SAX201910R0001

• Type: Electronic Overload Relay

• Rated Current Range: 0.63–10 A (adjustable)

• Rated Operating Voltage: AC 400 V / DC 24–60 V

• Protection Functions: Overload, phase-loss, short-circuit

• Output Contacts: NO/NC relay contacts

• Response Time: Fast response

• Mounting: Directly combined with contactor or DIN rail mount

• Operating Temperature: 0°C to +60°C

• Storage Temperature: -20°C to +70°C

• Protection Rating: IP20

• Indicators: LED status indicators

• Dimensions (W×H×D): ~45 × 80 × 70 mm

• Weight: ~0.15 kg

3. Advantages and Features

• Accurate current monitoring: Provides real-time motor status for safe operation.

• Multiple protection functions: Overload, phase-loss, and short-circuit protection to prevent motor and equipment damage.

• Adjustable current setting: Flexible adjustment according to motor rated current.

• LED status indicators: Shows relay operating status and fault information for easy maintenance.

• Modular design: Can be directly mounted with contactors, saving space and simplifying maintenance.

4. Typical Applications

• Industrial motor protection and control

• Conveyor systems, pumps, and fan protection

• Motor control in automated production lines

• HVAC systems and compressor protection

• Factory automation and machinery motor protection

5. Installation & Usage Notes

• Ensure relay rated current matches motor before installation.

• Secure all wiring to prevent loose connections or short circuits.

• Install in a dry, ventilated environment to prevent dust or liquid ingress.

• Regularly check LED status and relay operation to ensure system safety.

• Avoid overload operation to prolong relay life.