ZK4-BL – 4mm PUSH IN TERMINAL BLUE

Why Choose the TE Connectivity ZK4-BL PI-Spring Feed-Through Terminal Block?

The TE Connectivity ZK4-BL (1SNK706020R0000) is a compact 4 mm² PI-Spring feed-through terminal block designed for fast, secure and space-efficient conductor termination in industrial control panels, machinery and automation systems. Part of the TE Connectivity ENTRELEC SNK ZK series, it combines push-in and spring connection technology with a robust DIN rail mounting format.

The ZK4-BL provides two connection positions on one level and one electrical circuit. PI-Spring technology allows suitable prepared conductors to be inserted directly while also supporting spring-operated termination, providing installation flexibility without conventional screw connections. Consistent spring pressure helps maintain dependable electrical contact in demanding industrial environments.

With a 32 A IEC current rating, 1000 V IEC voltage rating and conductor capacity up to 6 mm² for rigid stranded conductors, the ZK4-BL delivers strong electrical performance within a compact 6 mm-wide housing. Its blue polyamide body provides clear circuit identification and mounts directly onto standard TH35 DIN rails.

Key Advantages

• Compact 4 mm² feed-through terminal block for industrial panel wiring.
• PI-Spring connection technology combines convenient push-in termination with reliable spring contact.
• 32 A IEC current rating for demanding control and power circuits.
• 1000 V IEC voltage rating provides broad industrial application capability.
• Compact 6 mm spacing supports high-density DIN rail installations.
• Accepts rigid stranded conductors up to 6 mm².
• Spring-pressure connection eliminates routine screw-terminal retightening.
• Blue housing provides easy visual circuit identification.

Key Features

• TE Connectivity ENTRELEC SNK ZK series.
• ZK4-BL PI-Spring terminal block.
• Feed-through terminal function.
• 2 connection positions.
• 1 circuit and 1 level.
• 32 A IEC rated current.
• 1000 V IEC voltage rating.
• 30 A UL and CSA current rating.
• 600 V UL / CSA operating voltage rating.
• 480 A short-time withstand current for 1 s.
• Flexible conductor capacity from 0.5–4 mm².
• Rigid stranded conductor capacity from 0.5–6 mm².
• 6 mm terminal spacing.
• DIN rail mounting on TH35-7.5 and TH35-15 rails.
• IP20 protection and UL 94V-0 housing flammability rating.

Reliable Push-In Spring Connections for Industrial Wiring

PI-Spring terminal technology combines fast conductor insertion with consistent spring-force contact pressure. Suitable prepared conductors can be connected directly, while the spring mechanism also supports flexible conductor installation and convenient disconnection. This helps reduce panel wiring time while avoiding the routine retightening associated with conventional screw terminals.

The ZK4-BL provides a straightforward feed-through connection between two conductors on a common electrical circuit. Its compact 6 mm profile, DIN rail mounting and broad conductor capacity make it particularly suitable for densely populated control cabinets where reliable connections and efficient use of installation space are important.

Typical Applications

• Industrial control panels and switchgear assemblies.
• PLC and automation control cabinets.
• Power and control circuit wiring.
• Machine building and OEM electrical systems.
• Manufacturing and process automation equipment.
• DIN rail mounted electrical distribution assemblies.