1sna290356r1300 – d2,5/5,c4,l,l

Why Choose the TE Connectivity D2.5/5.C4.L.L Sensor/Actuator Terminal Block?

The TE Connectivity D2.5/5.C4.L.L, part number 1SNA290356R1300, is a compact four-level spring-clamp sensor/actuator terminal block designed for high-density industrial automation wiring. Part of the Entrelec SNA spring terminal block range, it provides connections for four-wire sensors within a narrow 5 mm pitch, helping maximise available DIN rail space in control panels and machine cabinets.

This version incorporates a bidirectional green LED for 24 V DC circuits, allowing circuit status to be identified quickly during operation, commissioning and maintenance. Front-entry spring-clamp connections provide convenient conductor access while maintaining consistent contact pressure independently of operator tightening torque.

The D2.5/5.C4.L.L has an IEC rated current of 17.5 A, a rated voltage of 300 V and a rated cross-section of 1.5 mm². Its compact 5 × 95 × 41 mm construction and compatibility with TH 35-7.5 and TH 35-15 DIN rails make it particularly suitable for PLC interfaces, sensor connections and high-density industrial control systems.

Key Advantages

• Compact four-level sensor/actuator terminal block saves valuable DIN rail space.
• Designed for four-wire sensor connections within a 5 mm pitch.
• Integrated bidirectional green LED for 24 V DC provides clear circuit status indication.
• Spring-clamp connection technology maintains consistent conductor contact pressure.
• Front wiring entry provides convenient access during installation and maintenance.
• 17.5 A IEC rated current and 300 V rated voltage.
• Cross-connection capability supports efficient potential distribution in terminal assemblies.
• Suitable for standard 35 mm DIN rail control-panel installations.

Key Features

• TE Connectivity / Entrelec D2.5/5.C4.L.L.
• Four-level spring terminal block.
• Sensor/actuator connection function.
• Bidirectional green LED, 24 V DC.
• 5 mm terminal spacing.
• 17.5 A IEC rated current.
• 300 V rated voltage.
• 1.5 mm² rated cross-section.
• Rigid and flexible conductor capacity from 0.14–1.5 mm².
• IP20 protection at the main terminals.
• Grey polyamide insulating housing.
• Compatible with TH 35-7.5 and TH 35-15 DIN rails.

High-Density Sensor Wiring with LED Indication

Four-level sensor terminal blocks allow power, signal and associated sensor conductors to be organised within a very narrow DIN rail footprint. The D2.5/5.C4.L.L accommodates a four-wire sensor arrangement within only 5 mm of terminal width, making it particularly useful in control panels containing large numbers of field sensors and PLC input circuits.

Its integrated 24 V DC bidirectional green LED provides immediate visual circuit status indication, while the spring-clamp connections compensate automatically for conductor creep and maintain dependable contact pressure. Together, these features simplify installation, troubleshooting and maintenance in industrial automation systems.

Typical Applications

• Four-wire industrial sensor connections.
• PLC input and output wiring.
• 24 V DC automation circuits.
• Factory automation control panels.
• Machine control and production equipment.
• Process control and instrumentation systems.
• High-density DIN rail terminal assemblies.
• OEM machinery and electrical panel construction.