ZS25 – 25mm SCREW TERMINAL GREY

Why Choose the TE Connectivity ZS25 1SNK512010R0000 Feed-Through Terminal Block?

The TE Connectivity ZS25 1SNK512010R0000 is a high-capacity grey screw-clamp feed-through terminal block designed for reliable power and signal connections in industrial control panels, switchgear, machinery and power distribution equipment. Part of the TE Connectivity ENTRELEC SNK series, it combines proven screw-clamp termination with a compact DIN-rail design for secure and serviceable electrical connections.

The ZS25 provides one feed-through circuit, one level and two connection positions. It accommodates flexible and rigid stranded conductors from 0.5–25 mm², allowing relatively large conductors to be connected within a terminal measuring only 12 mm in spacing. Its robust polyamide housing and screw-terminal construction make it suitable for demanding industrial installations.

With an IEC rated current of 76 A and an IEC rated voltage of 1000 V, the ZS25 is suitable for higher-current and higher-voltage applications, including industrial power distribution and solar installations. UL and CSA ratings of 100 A and up to 600 V further support its use in internationally specified equipment.

Key Advantages

• High-capacity screw-clamp feed-through connection for power and signal circuits.
• Accepts flexible and rigid stranded conductors from 0.5–25 mm².
• High 76 A IEC rated current for demanding industrial applications.
• 1000 V IEC voltage rating makes the terminal suitable for high-voltage industrial and solar applications.
• 100 A UL and CSA current ratings with a maximum operating voltage of 600 V.
• Compact 12 mm terminal spacing helps conserve DIN-rail space when terminating larger conductors.
• Compatible with standard TH35-7.5 and TH35-15 DIN rails.
• Grey housing integrates easily into conventional industrial terminal assemblies.

Key Features

• TE Connectivity ENTRELEC SNK series.
• ZS25 grey feed-through terminal block.
• Proven screw-clamp connection technology.
• 1 circuit, 1 level and 2 connection positions.
• Wire size up to 25 mm² / 3 AWG.
• Flexible conductor capacity of 0.5–25 mm².
• Rigid stranded conductor capacity of 0.5–25 mm².
• 13.5 mm wire stripping length.
• 12 mm product spacing.
• Durable polyamide housing.
• IP20 protection rating.
• UL 94V-0 flammability-rated housing.
• Operating temperature range of -55 to +110 °C.

High-Capacity Feed-Through Connectivity in Just 12 mm

The ZS25 provides a direct electrical connection between two conductors while supporting conductor sizes up to 25 mm². Its 76 A IEC current rating, 1000 V IEC voltage rating and 1920 A short-time withstand current for 1 s make it well suited to demanding power distribution and industrial control circuits.

Despite its high conductor capacity, the ZS25 occupies only 12 mm of DIN-rail spacing. This allows panel builders to terminate larger power conductors efficiently without unnecessarily increasing terminal-strip dimensions. Its 1000 V AC/DC IEC rating also makes the terminal particularly suitable for applications such as photovoltaic and other higher-voltage DC installations.

Typical Applications

• Industrial control panels and automation cabinets.
• Power distribution and switchgear assemblies.
• Solar and photovoltaic electrical systems.
• Higher-current control and auxiliary circuits.
• Machine building and OEM electrical systems.
• Motor control centres and machinery panels.
• Process control and manufacturing equipment.
• Industrial AC and DC power distribution.