1sna400305r1000 – d70.22 terminal block

Why Choose the TE Connectivity D70/22 Feed-Through Terminal Block?

The TE Connectivity D70/22, part number 1SNA400305R1000, is a heavy-duty grey screw-clamp feed-through terminal block from the Entrelec SNA range. Designed for high-current power circuits, it combines a rated conductor size of 70 mm² with robust screw-terminal connections for industrial control panels, switchgear and power distribution assemblies.

The D70/22 carries an IEC current rating of 192 A and an operating voltage rating of 1000 V AC. Its conductor capacity extends from 16–95 mm² for rigid stranded conductors and 16–70 mm² for flexible conductors, providing substantial wiring capacity for demanding power applications.

Unlike terminal designs requiring a separate end section, the D70/22 uses a closed terminal block construction for improved rigidity and simplified assembly. The 22 mm wide housing mounts on TH 35-7.5 or TH 35-15 DIN rails and provides IP20 protection with a Polyamide 6.6 housing rated to UL 94V-0.

Key Advantages

• 192 A IEC current rating for demanding industrial power circuits.
• 1000 V AC operating voltage supports high-voltage terminal applications.
• Accommodates rigid stranded conductors up to 95 mm² and flexible conductors up to 70 mm².
• Closed terminal block design eliminates the need for a separate end section and optimises rigidity.
• Heavy-duty 6 N·m screw-clamp tightening torque provides secure conductor termination.
• Compatible with TH 35-7.5 and TH 35-15 DIN rails.

Key Features

• TE Connectivity / Entrelec D70/22 terminal block.
• Feed-through screw-clamp configuration.
• Designed for power circuit applications.
• 70 mm² / 2/0 AWG rated wire size.
• 192 A IEC current rating.
• 159 A UL current rating.
• 1000 V AC operating voltage.
• 8 kV IEC impulse withstand voltage.
• 22 mm terminal spacing.
• Closed-block construction with no separate end section required.

Heavy-Duty Feed-Through Connections for Power Circuits

The D70/22 is engineered for larger power conductors where high current capacity and mechanically secure termination are essential. Its heavy-duty screw clamps accommodate rigid stranded conductors from 16–95 mm² and flexible conductors from 16–70 mm², with a specified 25 mm stripping length and 6 N·m tightening torque for consistent installation.

The closed housing increases terminal rigidity and removes the requirement for a separate end section, simplifying construction of high-current terminal strips. With an IEC current rating of 192 A, 1000 V AC operating voltage and 8 kV impulse withstand rating, the D70/22 provides a robust connection platform for demanding industrial power distribution applications.

Typical Applications

• Industrial power distribution panels.
• Switchgear and electrical distribution assemblies.
• Heavy machinery and production equipment.
• High-current feed-through conductor connections.
• Motor control and industrial power circuits.
• TH 35 DIN rail terminal assemblies.