ABB S111-K10 S111 Series Screw-in Circuit Breaker

Description

Engineered for seamless integration into legacy and specialized electrical distribution systems, the ABB S111-K10 functions as a high-reliability screw-in miniature circuit breaker. Designed to directly replace traditional screw-in fuse links, this device features a standard E27 thread base, enabling quick retrofitting without requiring complete panel upgrades. The unit incorporates a thermal-magnetic tripping mechanism to deliver precise overcurrent and short-circuit protection, combining the convenience of a modern, resettable circuit breaker with the physical form factor of legacy fuse systems.

By utilizing the K-tripping characteristic, the ABB S111-K10 is highly suited for safeguarding control circuits, auxiliary systems, and loads with moderate inrush currents. This device ensures minimized downtime through its immediate manual reset capability following a fault, eliminating the ongoing maintenance overhead and waste associated with disposable melt fuses.

Features

• Direct screw-in installation utilizing a standard E27 thread base for rapid retrofitting.
• Thermal-magnetic trip mechanism provides robust overcurrent and short-circuit protection.
• Resettable design eliminates the requirement for replacement fuse links after tripping events.
• K-characteristic curve optimized for sensitive equipment and circuits with transient inrush currents.
• Clear mechanical status indication for straightforward operational diagnostics.

Applications

• Modernization of legacy residential and commercial distribution panels.
• Overcurrent protection in industrial control systems and auxiliary circuits.
• Machinery control panels requiring compact, socket-mounted circuit protection.
• Facility maintenance and retrofitting where panel space or configuration restricts DIN-rail mounting.

Technical Specifications

Installation Guidelines

• Prior to installation, ensure the target electrical circuit is completely de-energized and locked out.
• Inspect the existing E27 socket for dirt, corrosion, or damage before inserting the circuit breaker.
• Thread the device into the socket manually, turning clockwise until firmly seated. Do not apply excessive torque to prevent cracking the socket casing.
• Verify that the rated load of the branch circuit does not exceed the 10 A capacity of the device.