1SNA199447R2000 – M4/6,D2,2,S2,T23

Why Choose the TE Connectivity M4/6.D2.2S2.T23 Double-Deck Disconnect Terminal Block?

The TE Connectivity 1SNA199447R2000 M4/6.D2.2S2.T23 is a compact double-deck disconnect terminal block with integrated test sockets, designed for measurement, control and industrial automation circuits. Part of the established ENTRELEC SNA screw-clamp range, it provides two independently disconnectable circuits within a terminal only 6 mm wide, helping maximise wiring density in crowded control panels.

Each deck has its own disconnect mechanism, with a black pull lever controlling the upper contact and a grey pull lever controlling the lower contact. In addition, the T23 configuration incorporates two built-in test sockets, providing convenient access for compatible test equipment during commissioning, measurement, troubleshooting and maintenance.

The M4/6.D2.2S2.T23 has a rated cross-section of 4 mm², a rated current of 10 A and a rated voltage of 500 V. Its screw-clamp connections accommodate flexible conductors from 0.2–4 mm², while IP20 main-terminal protection, a -55 to +110 °C operating range and TH35/G32 rail compatibility make it suitable for demanding industrial installations.

Key Advantages

• Two independent disconnect circuits in one double-deck terminal.
• Compact 6 mm width maximises DIN rail wiring density.
• Two integrated test sockets simplify measurement and troubleshooting.
• Black pull lever controls the upper-deck contact.
• Grey pull lever controls the lower-deck contact.
• 10 A, 500 V rated electrical performance.
• 4 mm² rated cross-section for industrial control wiring.
• Closed terminal construction means no separate end section is required.

Key Features

• TE Connectivity / ENTRELEC SNA terminal block.
• M4/6.D2.2S2.T23 double-deck disconnect configuration.
• Two independent switching circuits.
• Two built-in test sockets.
• Screw clamp conductor connections.
• Tool-operated disconnect function with dedicated pull levers.
• 4 mm² rated cross-section.
• 10 A rated current.
• 500 V rated voltage.
• 6 kV rated impulse withstand voltage.
• 120 A short-time withstand current for 1 s.
• IP20 protection at the main terminals.
• 6 mm terminal spacing.
• Grey and black industrial terminal construction.

Independent Disconnect Circuits with Integrated Test Access

The M4/6.D2.2S2.T23 combines two independently controlled circuits within a single 6 mm-wide terminal, reducing the DIN rail space required compared with installing separate disconnect terminals. Dedicated black and grey pull levers provide clear visual identification and allow either circuit to be isolated independently during commissioning, servicing or troubleshooting.

The T23 configuration adds two built-in test sockets, providing convenient access to both circuits for compatible measuring and test equipment. This combination of independent isolation and integrated test access makes the terminal particularly useful in instrumentation, process control and automation applications where regular circuit testing must be performed efficiently.

Typical Applications

• Industrial electrical control panels.
• Measurement and instrumentation circuits.
• Factory automation systems.
• PLC input and output wiring.
• Process-control installations.
• Machine control cabinets.
• Testing and commissioning circuits.
• High-density DIN rail terminal assemblies.