ABB DB25/25A Overload Relay

We will arrange delivery within 3-5 days after receiving the payment.

Our express delivery: DHL and FedEx.

Quality packing for each product

Destination country all taxes & duty to be paid by buyer

Only part of the brand and model, if you have other product needs, please contact us.

Product Overview

The ABB DB25/25A is an industrial‑grade Overload Relay designed to provide overload protection for AC motors and related equipment. It uses bimetallic heating elements to detect prolonged overcurrent conditions and automatically disconnects the circuit when current exceeds the set value, thereby protecting the motor from overheating damage. This relay can be combined with contactors to form a reliable motor protection unit suitable for various industrial environments.

Technical Specifications

• Model: DB25/25A

• Type: Overload Relay

• Rated Current: 25 A

• Current Adjustment Range: Adjustable (e.g., 20–25 A typical)

• Motor Type: Three‑phase AC motors

• Rated Insulation Voltage: AC 690 V

• Control Contacts: Auxiliary contacts (NO/NC)

• Tripping Mechanism: Thermal (bimetallic strip)

• Reset Method: Manual reset

• Contactor Compatibility: Mountable with ABB contactors

• Mounting: Base or DIN rail mounting

• Operating Temperature: –25 °C … +60 °C

• Protection Rating: IP20

• Dimensions (W×H×D): approx. 45 × 90 × 70 mm (varies by design)

• Weight: approx. 0.4 kg

• Certifications: IEC 60947‑4‑1 / EN 60947‑4‑1

Advantages and Features

1. Reliable Overload Protection
   Bimetallic thermal sensing provides accurate protection against motor long‑term overload.

2. Adjustable Current Setting
   Allows adjustment to match the motor’s rated current for precise protection.

3. Simple and Robust Design
   Mechanically robust construction suitable for long‑term industrial operation.

4. Auxiliary Contacts for Feedback
   Equipped with NO/NC auxiliary contacts for control circuit feedback.

5. Easy Integration with Contactors
   Compatible with contactors to form a compact motor control and protection unit.

Typical Applications

• Overload protection for three‑phase AC motors

• Protection for presses, pumps, fans, and compressors

• Motor Control Centers (MCCs) and industrial distribution panels

• HVAC and ventilation system motor safety

• Motor control in automated production lines

Precautions

1. Set Correct Current
   Adjust the overload relay current setting to match the motor’s rated current before installation.

2. Correct Contactor Match
   Ensure the relay is paired with a compatible contactor model.

3. Proper Wiring
   Follow electrical standards for main and auxiliary circuit wiring to ensure stable operation.

4. Environmental Considerations
   Do not install in excessively humid, corrosive, or high‑vibration environments without suitable protection.

5. Routine Inspection
   Periodically check relay status and contact condition to ensure reliable protection.