zs50 – 50mm grey terminal

Why Choose the TE Connectivity ZS50 1SNK516011R0000 50 mm² Grey Feed-Through Terminal Block?

The TE Connectivity ZS50 1SNK516011R0000 is a high-capacity 50 mm² screw clamp feed-through terminal block from the ENTRELEC SNK series, designed for dependable power and signal connections in industrial control panels, distribution equipment, machinery and energy systems. Its robust screw clamp technology provides secure conductor retention while maintaining a compact footprint for its conductor capacity.

The ZS50 provides two connection positions, one circuit and one level within a 16 mm terminal spacing. It accommodates single flexible and rigid stranded conductors from 1–50 mm², while two conductors up to 25 mm² can be connected per screw clamp where the specified conductor configuration permits.

With an IEC current rating of 150 A, IEC voltage rating of 1000 V, 8000 V impulse withstand and 6000 A short-time withstand current at 1 s, the ZS50 delivers strong electrical performance for demanding applications. Its closed terminal block construction means that no separate end section is required, while the grey polyamide housing and standard TH35 DIN rail mounting support straightforward integration into professional electrical assemblies.

Key Advantages

• High-capacity 50 mm² feed-through terminal for demanding industrial power connections.
• 150 A IEC current rating for high-current electrical circuits.
• 1000 V IEC voltage rating supports high-voltage industrial applications.
• 6000 A short-time withstand current at 1 s provides robust electrical performance.
• Connects conductors up to 50 mm² / 0 AWG in only 16 mm spacing.
• Closed terminal block construction eliminates the need for a separate end section.
• Secure screw clamp termination supports reliable long-term conductor connections.
• Compatible with standard TH35-7.5 and TH35-15 DIN rails.

Key Features

• TE Connectivity ENTRELEC SNK series.
• ZS50 screw clamp feed-through terminal block.
• 50 mm² rated cross-section.
• 150 A IEC current rating.
• 140 A UL and CSA current rating.
• 1000 V IEC, UL and CSA voltage ratings.
• 8000 V IEC impulse withstand voltage.
• 6000 A short-time withstand current at 1 s.
• Two positions, one circuit and one level.
• 1–50 mm² single-conductor capacity.
• 16 mm product spacing.
• Grey polyamide insulating housing.
• Closed-block design – no end section required.
• Compatible with TH35-7.5 and TH35-15 DIN rails.
• UL 94V-0 housing flammability rating.

High-Current Feed-Through Connections in a Compact DIN Rail Format

The ZS50 is designed to combine high electrical performance with efficient use of DIN rail space. Conductors up to 50 mm² can be connected within a terminal only 16 mm wide, making the ZS50 particularly useful where high-current connections must be accommodated without unnecessarily increasing panel dimensions.

Its screw clamp system provides a strong mechanical connection for power and signal conductors, while the closed housing improves rigidity and removes the need for a separate end section. With IEC ratings of 150 A and 1000 V plus an 8000 V impulse withstand rating, the ZS50 provides a robust connection point for industrial distribution, machinery and suitable renewable-energy systems.

Typical Applications

• High-current industrial control panel wiring.
• Power distribution and switchgear assemblies.
• Industrial machinery and production equipment.
• Motor and power distribution circuits.
• Automation and process-control cabinets.
• Solar photovoltaic and renewable-energy systems.
• OEM electrical equipment and machine building.
• High-capacity DIN rail conductor connections.