SITOR fuse link with slotted blade contacts NH2 630A aR - 3NE33378

Product Description

Siemens SITOR Fuse Link with Slotted Blade Contacts NH2 630A aR – 3NE33378

The Siemens 3NE33378 is a SITOR semiconductor protection fuse link designed in NH2 size for high-performance protection of power semiconductors such as thyristors, diodes, converters, UPS systems, and variable frequency drives (VFDs). It uses an ultra-fast acting aR characteristic, ensuring rapid interruption of fault currents and protecting sensitive electronic equipment from severe short-circuit damage.

This fuse is commonly used in industrial power electronics, drive systems, and automation panels, where high reliability and fast fault clearing are critical.

Key Features:

• Siemens SITOR semiconductor protection fuse link 

• Part Number: 3NE33378 

• NH2 size with slotted blade contacts 

• Rated current: 630A 

• Utilization category: aR (ultra-fast semiconductor protection) 

• Rated voltage: 1000V AC 

• High breaking capacity: 100kA 

• Front indicator for fuse status monitoring 

• Silver-plated blade contacts for reliable conductivity 

• Suitable for NH fuse bases and switch disconnector mounting 

• Low power loss design for efficient operation 

• Complies with IEC 60269-1 / IEC 60269-4 standards