1sna400772r1300 – d70/22.p connection device – terminal

Why Choose the TE Connectivity D70/22.P Ground Terminal Block?

The TE Connectivity D70/22.P, part number 1SNA400772R1300, is a heavy-duty ground / protective earth screw-clamp terminal block designed for secure earthing connections in industrial control panels, power distribution assemblies and electrical equipment. Part of the proven ENTRELEC SNA terminal block range, it combines a large conductor capacity with robust DIN rail mounting for demanding power applications.

Finished in the internationally recognised green and yellow protective-earth colour scheme, the D70/22.P provides clear circuit identification and a reliable electrical and mechanical connection to the mounting rail. Its screw-terminal connection system accommodates large conductors while providing the high clamping force required for dependable industrial installations.

With a nominal conductor size of 70 mm², the D70/22.P accepts flexible conductors from 16–70 mm² and rigid stranded conductors from 16–95 mm². It provides a short-time withstand current rating of 8400 A for 1 second and an impulse withstand voltage of 8000 V, making it well suited to high-capacity protective-earth circuits.

Key Advantages

• Heavy-duty protective earth / ground terminal block for industrial power applications.
• 70 mm² nominal conductor size for large-section earthing conductors.
• Accepts flexible conductors from 16–70 mm².
• Accepts rigid stranded conductors from 16–95 mm².
• 8400 A short-time withstand current for 1 second.
• Green/yellow housing provides immediate protective-earth identification.
• Robust screw-clamp termination provides secure conductor retention.
• DIN rail mounting supports straightforward integration into industrial panel assemblies.

Key Features

• TE Connectivity / ENTRELEC D70/22.P ground terminal block.
• SNA Series screw-clamp design.
• Ground / protective earth function.
• 70 mm² nominal wire size.
• 22 mm terminal spacing.
• 8400 A short-time withstand current at 1 second.
• 8000 V impulse withstand voltage.
• 6 N·m IEC tightening torque.
• Flame-retardant polyamide 6.6 housing.
• UL 94 V-0 flammability classification.
• IP10 protection at the main terminals.
• Designed for TH35-15 DIN rail mounting.

Reliable Protective-Earth Connections for High-Capacity Circuits

Protective-earth terminal blocks provide a dedicated connection between electrical conductors and the equipment grounding system. The D70/22.P is designed to establish reliable electrical and mechanical contact with the DIN rail, providing an effective earth path while its green/yellow housing makes the protective-earth circuit immediately identifiable during installation and maintenance.

The combination of large conductor capacity, high short-circuit withstand performance and robust screw-clamp technology makes the D70/22.P particularly suitable for industrial power distribution and machinery installations. Its 22 mm width provides the space required for terminating substantial earth conductors while maintaining a modular DIN rail installation format.

Typical Applications

• Industrial control and automation panels.
• Power distribution assemblies.
• Motor control centres.
• Industrial machinery and production equipment.
• Large-section protective-earth conductor termination.
• Infrastructure and transportation electrical systems.
• Marine and process-industry electrical installations.