1sna399782r0000 – d4/8,sfdt2,i,ado

Why Choose the TE Connectivity D4/8.SFDT2.I.ADO 1SNA399782R0000 Fuse Terminal Block?

The TE Connectivity D4/8.SFDT2.I.ADO 1SNA399782R0000 is a compact fuse terminal block with ADO insulation displacement and screw-clamp connections, designed to provide circuit protection, blown-fuse indication and convenient testing within industrial control systems. Part of the TE Connectivity Entrelec SNA ADO range, it accepts 5 × 20 mm and 5 × 25 mm fuses and combines several panel functions within a compact 8 mm terminal width.

The D4/8.SFDT2.I.ADO incorporates a 24 V AC/DC LED blown-fuse indicator, allowing a defective circuit to be identified quickly during commissioning, operation or maintenance. It also features two 2 mm diameter test sockets, providing convenient access for electrical measurements without disturbing the connected conductors.

With a rated current of 6.3 A, rated voltage of 500 V and rated impulse withstand voltage of 6 kV, the 1SNA399782R0000 is designed for professional control and automation applications. The ADO connection accepts conductors up to 1.5 mm², while the screw-clamp side accommodates conductors up to 4 mm², providing flexibility between internal panel and field wiring.

Key Advantages

• Accepts 5 × 20 mm and 5 × 25 mm fuses for individual circuit protection.
• Integrated 24 V AC/DC LED blown-fuse indicator assists rapid fault identification.
• Includes two 2 mm test sockets for convenient circuit measurement and testing.
• Combines ADO insulation displacement and screw-clamp connections in one terminal.
• ADO connection supports up to two wires per connection.
• Compact 8 mm spacing helps optimise DIN rail installation space.
• Suitable for both TH35-7.5 and TH35-15 DIN rails.

Key Features

• TE Connectivity Entrelec D4/8.SFDT2.I.ADO fuse terminal block.
• Designed for 5 × 20 mm and 5 × 25 mm fuse links.
• Fuse is not supplied with the terminal block.
• 24 V AC/DC LED blown-fuse indication.
• 2 × 2 mm diameter test sockets.
• ADO insulation displacement connection combined with screw clamp.
• 6.3 A rated current.
• 500 V rated voltage.
• 6 kV rated impulse withstand voltage.
• IP20 protection at the main terminals.
• Grey polyamide insulating housing.
• One-level DIN rail terminal construction.

Fuse Protection, Fault Indication and Testing in One Terminal

Fuse terminal blocks allow individual control and instrumentation circuits to be protected directly at the terminal level. The D4/8.SFDT2.I.ADO accepts commonly used 5 × 20 mm and 5 × 25 mm fuse links and adds an integrated 24 V AC/DC LED indicator, helping maintenance personnel locate a blown fuse quickly when troubleshooting equipment.

The two integrated 2 mm test sockets provide convenient measurement points, while the combination of ADO and screw-clamp termination supports flexible panel wiring. Up to two conductors can be connected at the ADO connection, while the screw-clamp connection accommodates conventional field wiring. Together, these features make the terminal particularly useful in automation, instrumentation and machine-control circuits requiring protection and diagnostic access.

Typical Applications

• Industrial control panel circuit protection.
• PLC input and output circuits.
• Instrumentation and measurement systems.
• Machine building and OEM electrical equipment.
• Process control and automation cabinets.
• Control circuits requiring blown-fuse indication and test access.