ABB DB25/32A Thermal 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 DB25/32A is an industrial Thermal Overload Relay designed to provide overload protection for three‑phase AC motors and related equipment. Using a bimetallic thermal element, it detects prolonged overcurrent and opens the circuit when current exceeds the set limit, preventing motor overheating and damage. It can be combined with a contactor to form a complete motor control and protection solution.

Technical Specifications

• Model: DB25/32A

• Type: Thermal Overload Relay

• Current Adjustment Range: 25 A … 32 A (adjustable)

• Motor Type: Three‑phase AC motors

• Rated Insulation Voltage: AC 690 V

• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)

• Tripping Mechanism: Thermal (bimetallic strip)

• Reset Type: Manual reset

• Mounting: DIN rail or combined with contactor

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

• Protection Rating: IP20

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

• Dimensions (W×H×D): approx. 45 × 90 × 72 mm

• Weight: approx. 0.4 kg

Advantages and Features

1. Reliable Overload Protection
   Bimetallic thermal design accurately detects overload and trips to protect motors from damage.

2. Adjustable Current Setting
   Adjustable within 25 A–32 A to suit different motor ratings and protection needs.

3. Auxiliary Contact Feedback
   Equipped with NO and NC auxiliary contacts for status feedback to control systems.

4. Flexible Installation
   Can be mounted on DIN rail or combined with a contactor for a compact motor control module.

5. Industrial‑Grade Design
   Suitable for a wide temperature range and industrial environments; ensures long‑term reliability.

Typical Applications

• Overload protection for three‑phase AC motors

• Protection of pumps, fans, compressors, and other drive equipment

• Motor Control Centers (MCC) and control panels

• HVAC (Heating, Ventilation, Air Conditioning) motor protection

• Motor control in industrial automation production lines

Precautions

1. Correct Current Setting
   Adjust the overload relay setting according to the motor’s rated current prior to installation.

2. Matched Contactor Usage
   Use with a compatible contactor (ABB recommended) for proper mechanical and electrical fit.

3. Proper Wiring
   Follow electrical standards and ensure secure wiring of main and auxiliary circuits.

4. Environmental Conditions
   Avoid installation in excessively humid, hot, or corrosive environments without protective measures.

5. Routine Inspection
   Periodically verify relay operation and auxiliary contact status to ensure ongoing reliability.