Isolating switch OT125F3, 125A, 3-pole, without shaft and handle 1SCA105033R1001

Isolator switch – reliable power disconnection

This three-pole OT125F3 isolator switch from ABB is a robust solution for safely disconnecting electrical circuits. Designed to operate with a current of 125A, it finds application in low-voltage switchboards, substations, and installations with motors. The lack of a shaft and handle makes it ideal where compactness and ease of installation are important.

Functionality and application

The device serves as a main or repair disconnector, allowing for safe disconnection of power for maintenance or repair work. The possibility of mounting both on a DIN rail and on a switchboard panel provides flexibility during installation. The rated operating power for AC-23 is 45 kW, making it suitable for various industrial and commercial applications.

Key features and benefits

• Durability and safety: Rated continuous current of 125A and withstand current 2.5 kA guarantee reliable operation even in difficult conditions.
• Universal mounting: The possibility of mounting on a DIN rail or switchboard panel facilitates integration with existing infrastructure.
• Compact dimensions: Height 100 mm, width 70 mm and depth 74 mm allow installation in limited space.
• Application as a main disconnector: Ideal for completely cutting off the power in the installation.
• Designed to work with motors: Characteristic C allows it to react more slowly to short current surges, therefore it tolerates starting devices with a motor well.
• Solid construction: Made as a complete device in a housing, providing durability and protection against mechanical damage.
• Compliance with standards: Designed for installation in distribution boards, meeting safety and reliability requirements.

The rated operating voltage of 750V and the rated conditional short-circuit current of 50 kA ensure safe operation in various network conditions. The protection class IP20 protects against accidental contact, increasing safety. Screw connection of the main contacts ensures a secure and durable connection of the wires. The device is made of a black control element, which makes it easier to identify in the switchboard.