Switch disconnector fuse in SS Enclosure - 3KL8421-5UA10

Product Description

Siemens Switch Disconnector Fuse in SS Enclosure – 3KL8421-5UA10

The Siemens 3KL8421-5UA10 is a SENTRON 3KL8 Switch Disconnector Fuse (SDF) designed for safe switching, isolation, and short-circuit protection in low-voltage power distribution systems. This model comes in a stainless steel (SS) enclosure execution, making it suitable for heavy-duty industrial, outdoor, and corrosive environments where high durability and long service life are required.

It is widely used in LT panels, MCC/PCC panels, feeder pillars, and high-capacity industrial distribution networks, where HRC fuse-based protection combined with secure manual isolation is essential.

Key Features:

• Siemens SENTRON 3KL8 series Switch Disconnector Fuse 

• Part Number: 3KL8421-5UA10 

• Stainless Steel (SS) enclosure execution 

• 3 Pole + Neutral (3P+N) configuration 

• Rated current: 630A 

• Suitable for DIN-type HRC fuse links 

• High short-circuit withstand capability 

• Safe load switching and reliable isolation function 

• Manual rotary operating mechanism 

• Clear ON/OFF position indication 

• Padlockable handle for LOTO safety 

• Robust SS enclosure for harsh industrial environments 

• Designed for LT / MCC / PCC panel applications 

• Complies with IEC 60947-3 standards