Siemens Fuse element, insulated grip lugs, NH000, 50A

Product Overview

The Siemens 3NA6820 is a high rupturing capacity (HRC) NH fuse element designed for low voltage applications. This SENTRON series NH000 size fuse provides reliable protection for cables and lines with a 50A current rating, suitable for both AC and DC electrical systems.

Key Features:

• Current Rating: 50A nominal current
• Fuse Size: NH000 (Size 000)
• Operating Class: gG (for cable and line protection)
• Voltage Ratings: 500V AC / 250V DC
• Case Style: Blade tag with centered design
• Combined Indicator: Visual indication of fuse status

Technical Specifications:

• Nominal Current (In): 50A
• AC Voltage Rating (Un AC): 500V
• DC Voltage Rating (Un DC): 250V
• Operating Class: gG (general purpose)
• Fuse Standard: NH000 size
• Breaking Capacity: High rupturing capacity design
• Dimensions: 0.5625 x 2 inches

Safety Features:

• Insulated Grip Lugs: Enhanced safety during replacement and handling
• Combined Indicator: Clear color change from red to white signals fuse tripping
• Silver-plated Contact Blades: Long-term reliable operation and low contact resistance
• HRC Design: High rupturing capacity for superior protection

Applications: Designed for selective line protection and system protection in functional buildings, industrial facilities, and power supply installations. Ideal for cable and line protection in low voltage electrical systems where reliable overcurrent protection is essential.

Standards Compliance:

• DIN VDE 0636: German electrical standards
• DIN VDE 0636-2: Extended German fuse standards
• EN 60269-1: European fuse standard
• IEC 60269-1: International fuse standard
• IEC 60269-2: International fuse application standard
• CSA 22.2 No. 106: Canadian electrical standard (File No. 1710842)

SENTRON System Advantages: As part of the SENTRON protective components series, this fuse provides effective protection for personnel, equipment, and installations through reliable shutdown function during overload or short-circuit conditions. Achieves higher short-circuit currents and better current limitation compared to miniature circuit breakers.

Installation Benefits:

• High Selectivity: Cost-effective selective protection
• Enhanced Safety: Insulated grip lugs for safe handling
• Visual Indication: Combination alarm for clear status indication
• Reliable Operation: Silver-plated contacts ensure long-term performance

Product Series: Part of the 3NA6 series NH fuse links, providing comprehensive protection solutions for low voltage applications. Compatible with standard NH fuse bases and holders.

Physical Specifications:

• Weight: 0.13 kg
• Product Range: SENTRON
• Series: 3NA Series

Standards & Compliance:

• UPC: 754554885711
• Product Range: SENTRON
• Manufacturer: Siemens

Download existing graphical data for this product:

• Official Siemens Datasheet (PDF)
• Official Siemens Product Page
• Siemens Industry Mall Documentation
• Siemens Technical Support Portal
• Siemens Product Variant Information