Switch Disconnector: 3KA8 for power distribution - 3KA8311-5UE00

Product Description

Siemens Switch Disconnector – 3KA8 Series – 3KA8311-5UE00

The Siemens 3KA8311-5UE00 is a SENTRON 3KA8 switch disconnector designed for safe manual isolation and switching of low-voltage power distribution systems. It is widely used in industrial switchboards, MCC panels, and main distribution boards where reliable isolation and operational safety are required.

This model belongs to the 3KA8 series (200A class) and is designed for 3-pole + neutral (3PN) applications, making it suitable as a main incomer or feeder isolator in three-phase electrical systems. It ensures safe disconnection of circuits without providing overload or short-circuit protection, which must be handled by upstream protective devices like MCCBs or fuses.

The device is built for high mechanical durability, reliable load switching (AC-23A duty), and long service life, making it ideal for industrial and commercial power distribution networks.

Key Features:

• Siemens SENTRON 3KA8 switch disconnector 

• Manual isolation for power distribution systems 

• 3PN configuration (3-pole + neutral) 

• Rated current: 200A 

• Suitable for systems up to 690V AC 

• High mechanical and electrical endurance 

• Clear ON/OFF position indication 

• Suitable for AC-23A load switching duty 

• Compact panel mounting design 

• No overload or short-circuit protection (isolator only) 

• IEC 60947-3 compliant