1sna290350r2100 – d2.5/5c3.1

Why Choose the TE Connectivity D2.5/5.C3.L 1SNA290350R2100 Sensor/Actuator Terminal Block?

The TE Connectivity 1SNA290350R2100, manufacturer designation D2.5/5.C3.L and also referenced as D2.5/5C3.1, is a compact three-level spring-clamp sensor/actuator terminal block designed for high-density industrial control and automation wiring. Part of the established TE Connectivity ENTRELEC SNA spring terminal block range, it enables sensor and actuator connections to be organised within a space-saving terminal width of just 5 mm.

The D2.5/5.C3.L uses spring-clamp connection technology with front conductor entry for convenient installation and servicing. Its spring contacts maintain clamping pressure independently of the operator and automatically compensate for conductor creep, helping provide reliable long-term connections in industrial machinery, PLC cabinets and process automation systems.

Designed specifically for three-wire sensor applications, this terminal block has a rated cross-section of 1.5 mm², an IEC rated current of 17.5 A and a rated voltage of 300 V. The three-deck construction, 5 mm pitch and compatibility with standard 35 mm DIN rails make the 1SNA290350R2100 particularly effective where large numbers of sensors and actuators must be connected within limited panel space.

Key Advantages

• Space-saving three-level sensor/actuator terminal block with a 5 mm pitch.
• Designed specifically for organised three-wire sensor connections.
• Spring-clamp connection technology provides 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.
• Compact construction helps increase wiring density in industrial control cabinets.

Key Features

• TE Connectivity ENTRELEC SNA spring terminal block range.
• D2.5/5.C3.L three-level design.
• Designed for sensor and actuator connections.
• Spring-clamp termination with front conductor entry.
• 17.5 A IEC rated current.
• 300 V rated voltage.
• 1.5 mm² IEC rated cross-section.
• 4 kV rated impulse withstand voltage.
• 5 mm pitch for high-density installations.
• IP20 protection rating at the main terminals.

Space-Efficient Connections for Sensors and Actuators

Industrial sensors and actuators commonly require multiple conductors for signal and power connections, making conventional single-level terminals inefficient when many field devices are installed. The D2.5/5.C3.L addresses this requirement with a three-deck architecture specifically developed for sensor and actuator wiring while occupying only 5 mm of DIN rail width.

Spring-clamp technology further simplifies installation by maintaining conductor contact pressure without relying on installer-applied screw torque. Combined with front wiring access and automatic compensation for conductor creep, the 1SNA290350R2100 provides a practical connection solution for high-density PLC, machine control and process automation cabinets.

Typical Applications

• Three-wire industrial sensor connections.
• Actuator wiring in automation systems.
• PLC input and output control cabinets.
• Industrial machinery and machine-building applications.
• Process control and instrumentation systems.
• High-density DIN rail wiring installations.