Eaton HIS-125/4 Modular Switch Disconnector, 125A, 4-Pole

The Eaton HIS-125/4 is a high-performance modular switch disconnector engineered for the secure isolation of electrical circuits. With a 125A current rating and a 4-pole configuration, this device provides a reliable solution for disconnecting power in industrial and commercial electrical distribution boards. Its compact design allows for seamless integration into standard electrical systems, ensuring both safety and operational efficiency.

Advantages

This switch disconnector offers exceptional reliability and durability in demanding electrical environments. The modular construction facilitates quick and straightforward installation on standard DIN rails, saving valuable time during panel assembly. By providing a clear and positive disconnection of power, it enhances safety for maintenance personnel and protects downstream equipment from electrical faults. Its robust build quality ensures long-term performance even under continuous load conditions.

Suitable for

• Industrial power distribution systems
• Commercial building electrical panels
• Main circuit isolation in control cabinets
• Emergency power-off applications

This device may not be suitable for applications requiring high-speed switching under load or for environments with extreme environmental conditions that exceed the specified IP rating of the enclosure. It is not intended for use as a motor starter or for frequent switching operations where arc suppression for high-frequency cycling is required.

Key specifications

• Rated current: 125A
• Number of poles: 4
• Mounting type: DIN rail
• Design: Modular

To use the Eaton HIS-125/4, ensure it is mounted securely onto a standard DIN rail within a distribution board or control cabinet. Connect the incoming and outgoing power cables to the appropriate terminals, ensuring that all connections are tightened to the manufacturer's specified torque settings. Once installed, the switch can be operated manually to isolate the circuit by moving the toggle to the off position, providing a visible break in the power supply.

What to consider before purchase

• Verify that the 125A rating matches your circuit requirements
• Ensure sufficient space is available on the DIN rail for a 4-pole device
• Confirm that the cable cross-section is compatible with the terminal capacity

Always ensure that the power supply is disconnected before performing any installation or maintenance work on the switch disconnector. Regularly inspect the terminals for tightness to prevent overheating and ensure optimal electrical contact.