1snk506415r0000 – zs4-sf-r3 [pk=50] fuse terminal block

Why Choose the TE Connectivity ZS4-SF-R3 1SNK506415R0000 Fuse Terminal Block?

The TE Connectivity ZS4-SF-R3 1SNK506415R0000 is a compact 4 mm²-class screw clamp fuse terminal block designed to combine conductor termination and individual circuit protection within industrial control panels. Part of the TE Connectivity ENTRELEC SNK Series, it accommodates a standard 5 × 20 mm fuse and incorporates a blown-fuse indicator for rapid identification of a faulty circuit.

The ZS4-SF-R3 is designed for 115–250 V AC/DC blown-fuse indication and provides a single fused circuit across two terminal positions. Its 6 mm pitch allows compact installation on DIN rail, while two jumper channels aligned with compatible SNK Series terminals simplify potential distribution across larger terminal assemblies.

With an IEC rated voltage of 500 V and a 6.3 A IEC/CSA current rating, the ZS4-SF-R3 is well suited to protecting control, instrumentation and auxiliary circuits. The grey and dark-grey polyamide housing provides IP20 protection, a UL 94V-0 flammability rating and an operating temperature range of -55 to +110 °C for dependable industrial service.

Key Advantages

• Combines DIN rail termination and 5 × 20 mm fuse protection in one compact terminal.
• Integrated 115–250 V AC/DC blown-fuse indicator helps identify defective circuits quickly.
• 500 V IEC rated voltage for industrial control and auxiliary circuits.
• 6.3 A IEC/CSA current rating suited to standard 5 × 20 mm fuse applications.
• Accepts flexible and rigid stranded conductors up to 4 mm².
• Compact 6 mm pitch helps maximise available DIN rail space.
• Two aligned jumper channels simplify distribution alongside compatible SNK Series terminal blocks.

Key Features

• TE Connectivity ENTRELEC SNK Series.
• ZS4-SF-R3 screw clamp fuse terminal block.
• Designed for 5 × 20 mm cartridge fuses.
• Fuse not supplied with the terminal block.
• Integrated blown-fuse indicator for 115–250 V AC/DC.
• Blown-fuse indicator leakage current of <0.5 mA.
• 6.3 A IEC rated current.
• 500 V IEC rated voltage.
• 6000 V IEC impulse withstand voltage.
• Single-level, two-position, one-circuit configuration.
• 6 mm product spacing.
• Grey and dark-grey polyamide housing.
• IP20 protection rating.
• UL 94V-0 flammability rating.
• DIN rail mounting for industrial panel installations.
• Supplied in a pack quantity of 50.

Reliable Circuit Protection for Industrial Control Systems

Fuse terminal blocks combine a field-wiring connection with replaceable overcurrent protection, allowing individual control and auxiliary circuits to be protected without requiring separate panel-mounted fuse holders. The TE Connectivity ZS4-SF-R3 accepts a standard 5 × 20 mm fuse, helping create compact and serviceable protection arrangements within DIN rail assemblies.

The integrated blown-fuse indicator provides rapid visual identification when a fuse has operated on circuits within the 115–250 V AC/DC indication range. Together with aligned jumper channels, screw clamp connections and the modular SNK Series format, this helps simplify installation, troubleshooting and maintenance in industrial automation and control panels.

Typical Applications

• Industrial control panels and automation cabinets.
• PLC input, output and auxiliary circuits.
• Instrumentation and measurement systems.
• Machine control and OEM electrical equipment.
• Process control and monitoring systems.
• Low-current control circuit protection.
• Electrical distribution, commissioning and maintenance panels.