1snk705311r0000 – zk2.5-sp pi-spring disc with plug – grey

Why Choose the TE Connectivity ZK2.5-SP PI-Spring Disconnect Terminal Block?

The TE Connectivity ZK2.5-SP 1SNK705311R0000 is a grey PI-Spring disconnect terminal block with plug-in component capability, designed for industrial control, signal and instrumentation circuits where components need to be inserted in series without disturbing the field wiring. Part of the TE Connectivity ENTRELEC SNK Series, it combines compact spring termination with a removable plug interface for flexible circuit configuration.

The ZK2.5-SP is designed for use with the PG5 quick-fitting component holder plug, allowing components such as resistors, diodes and miniature axial fuses to be incorporated into the circuit. The PG5 system accommodates components up to approximately 8.8 × 3.2 mm, while the terminal itself includes two 2 mm test sockets for convenient circuit testing and measurement.

With a rated cross-section of 2.5 mm², an IEC current rating of 17 A and an IEC voltage rating of 630 V, the ZK2.5-SP provides dependable performance in a compact 5.2 mm pitch. It accepts flexible conductors up to 2.5 mm² and rigid stranded conductors up to 4 mm², making it suitable for densely wired industrial control and automation systems.

Key Advantages

• Plug-in disconnect design enables circuit components to be inserted without disconnecting field wiring.
• Compatible with the PG5 component holder plug for flexible component integration.
• Supports resistors, diodes and miniature axial fuses up to approximately 8.8 × 3.2 mm.
• Two 2 mm test sockets provide convenient measurement and diagnostic access.
• PI-Spring technology supports rapid push-in or spring-assisted conductor termination.
• Compact 5.2 mm pitch conserves valuable DIN rail space.
• 630 V IEC rating supports demanding industrial control and signal applications.

Key Features

• TE Connectivity ENTRELEC SNK Series.
• ZK2.5-SP PI-Spring terminal block.
• Disconnect with plug configuration.
• Compatible with PG5 quick-fitting component holder plug.
• 2 built-in test sockets, 2 mm diameter.
• 2 connection positions.
• 1 circuit and 1 level.
• 5.2 mm product spacing.
• 2.5 mm² rated cross-section.
• 17 A IEC rated current.
• 630 V IEC rated voltage.
• 18 A UL rated current.
• 14 A CSA rated current.
• 300 V UL/CSA maximum operating voltage.
• 6,000 V IEC impulse withstand voltage.
• 300 A short-time withstand current at 1 s.
• Grey polyamide housing.
• IP20 protection rating.
• UL 94V-0 flammability rating.

Reliable Plug-In Component and Test Connectivity

The TE Connectivity ZK2.5-SP provides a flexible method of incorporating electrical components directly into a terminal circuit. Its plug-in disconnect interface is designed for the PG5 component holder plug, allowing components such as resistors, diodes and mini axial fuses measuring up to approximately 8.8 × 3.2 mm to be fitted in series with the connected circuit.

This arrangement simplifies commissioning, maintenance and circuit modification because the plug-in component can be removed or changed without disconnecting the field conductors. Combined with two integrated 2 mm test sockets, PI-Spring conductor termination and a compact 5.2 mm footprint, the ZK2.5-SP is particularly well suited to instrumentation, signal conditioning and industrial control applications.

Typical Applications

• Industrial control and automation panels.
• Instrumentation and measurement circuits.
• PLC and I/O marshalling systems.
• Signal conditioning circuits.
• Diode and resistor interface circuits.
• Miniature fuse-protected control circuits.
• Testing, commissioning and diagnostic circuits.