ABB OTL25T3M 1SCA022612R9990 3-pole isolator switch

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ABB OTL25T3M (1SCA022612R9990) 3-Pole Isolator Switch – Product Information

1. Product Overview

The ABB OTL25T3M (Part No. 1SCA022612R9990) is a three-pole isolator switch designed for reliable circuit disconnection and safety isolation in low-voltage power distribution systems.
It belongs to ABB’s OT Series, known for its robust mechanical design, compact size, and high safety standards.
Rated at 25A, it is ideal for use as a main switch or isolator in control panels, machinery, and distribution boards.

2. Technical Specifications

• Model: OTL25T3M

• Part Number: 1SCA022612R9990

• Type: 3-Pole Isolator Switch

• Rated Current (Ith): 25 A

• Rated Operational Voltage (Ue): 690 V AC

• Rated Insulation Voltage (Ui): 750 V

• Impulse Withstand Voltage (Uimp): 8 kV

• Poles: 3

• Utilization Category: AC-21A / AC-22A

• Mechanical Life: 100,000 operations

• Electrical Life: 10,000 operations

• Frequency: 50/60 Hz

• Operating Temperature: -40 ℃ to +70 ℃

• Mounting: Panel or base mounting

• Protection Class: IP20 (with terminal covers)

• Terminals: Screw terminals, multi-strand compatible

• Short-time Withstand Current (Icw): 0.8 kA / 1 s

• Handle Type: Front rotary handle with padlock feature

• Weight: Approx. 0.3 kg

• Certifications: IEC 60947-3, UL508, CE, RoHS

3. Features and Advantages

1. High safety – Clear ON/OFF position indication ensures operator safety.

2. Compact size – Space-saving design for modern control panels.

3. Reliable performance – Silver alloy contacts provide excellent conductivity and arc resistance.

4. Wide temperature range – Operates reliably in harsh environments.

5. Flexible mounting – Suitable for door, panel, or base installations.

6. Easy maintenance – Modular structure simplifies replacement.

7. Global compliance – Certified for worldwide use under IEC and UL standards.

4. Application Areas

• Main power isolation in industrial distribution systems

• Motor control centers (MCCs)

• Machinery and equipment power disconnection

• Photovoltaic and energy storage systems

• HVAC and building automation

• Safety isolation for automation lines

• Conveyors, pumps, and fans control panels

5. Precautions

1. Installation must be carried out by qualified personnel.

2. Ensure the load is de-energized before operation.

3. Regularly inspect terminal tightness and temperature.

4. Avoid installation in humid, dusty, or corrosive environments.

5. Confirm polarity and current ratings for DC applications.

6. Perform periodic functional checks to ensure isolation integrity.

The structure and details of the product：

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