Mersen A3-66S1000TD - Class SB Fuse 660V/1000A (Low Voltage Protection)

Mersen A3-66S1000TD is a Class SB low-voltage fuse designed for high-current circuit protection in industrial power distribution systems. It features a 660V AC voltage rating and 1000A current capacity, housed in a durable 3 lb cartridge construction with sand-filled arc quenching for reliable fault interruption. The fuse complies with industry standards for Type A protection, offering precise time-current characteristics for selective coordination. Its SB classification ensures compatibility with standard fuse holders, making it ideal for motor branch circuits, transformer protection, and heavy industrial equipment applications.

Key Features & Specifications

• Type: Class SB, sand-filled cartridge fuse with Type A time-current characteristics
• Voltage Rating: 660V AC
• Current Rating: 1000A
• Dimensions: Standard Class SB cartridge size
• Standards: UL/CSA recognized for low-voltage applications
• Applications: Motor protection, transformer circuits, industrial power distribution
• Weight: 3 lb
• Fuse Class: SB
• Item Subcategory: Low Voltage Fuse