Schneider Electric STI Cylindrical Fuse Disconnector 1P for 8.5x31.5mm Fuses

The Schneider Electric STI cylindrical fuse disconnector is a professional-grade, 1-pole modular device engineered for the secure housing and operation of 8.5x31.5mm cylindrical fuses. Designed for integration into electrical distribution boards, this unit serves as a reliable protective component that combines circuit isolation with overcurrent protection. Its compact modular design allows for seamless installation on standard DIN rails, making it an essential element for maintaining safety and control in various electrical setups.

Advantages

This fuse disconnector offers a high level of operational safety by allowing for the manual disconnection of circuits during maintenance or emergency situations. The robust construction ensures long-term durability and consistent performance under standard electrical loads. Its modular architecture simplifies the design of distribution panels, while the clear design facilitates quick fuse replacement, thereby minimizing downtime in industrial and commercial environments.

Suitable for

• Industrial electrical distribution systems
• Commercial building power management
• Protection of control circuits
• Manual isolation of electrical loads

This device is not intended for use with fuse sizes other than the specified 8.5x31.5mm format. It is also not designed for high-voltage power transmission lines or applications requiring automatic remote tripping capabilities, as it is a manual disconnection device.

Key specifications

• Number of poles: 1
• Compatible fuse size: 8.5x31.5mm
• Mounting type: DIN rail
• Device type: Modular fuse disconnector

To use the device, ensure the power supply is switched off before inserting or replacing the fuse. Open the hinged cover of the disconnector, place the 8.5x31.5mm fuse into the designated clips, and close the cover securely. The unit is then ready to provide circuit protection. Always verify that the fuse rating matches the requirements of the specific circuit being protected.

What to consider before purchase

• Verify the current rating requirements of your circuit
• Ensure compatibility with 8.5x31.5mm fuse dimensions
• Confirm available space on your DIN rail

Usage recommendations: Always use fuses with the correct amperage rating to prevent damage to the equipment and ensure the safety of the electrical installation. Regularly inspect the disconnector for signs of wear or heat damage during routine maintenance.