Allen-Bradley 1492-J4 Feed-Through Terminal Block

Allen-Bradley 1492-J4 Feed-Through Terminal Block

The Allen‑Bradley 1492‑J4, also cataloged as the 1492‑J4 feed‑through terminal block, operates as a single‑tier screw‑connection component for conductor routing and panel‑level terminations within industrial control assemblies.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks

Grounding and feed‑through terminal blocks contribute to stable reference potentials for Allen‑Bradley PLC and network modules. The mechanical stability of the 35 mm DIN rail mount supports consistent conductor retention under vibration, reducing noise coupling into Profinet and EtherNet/IP deterministic networks. Proper termination practices help maintain shield continuity and minimize transient disturbances on high‑speed industrial Ethernet cabling.

Frequently Asked Questions

Q: Can the terminal block support both solid and stranded conductors? A: Yes. The screw‑clamp design accommodates 22–10 AWG conductors within the rated current limits.

Q: Is the block suitable for high‑temperature cabinets? A: Yes. It supports operation from –50 deg C to +120 deg C.

Q: Does the terminal block require a specific DIN rail profile? A: No. It mounts on standard 35 mm DIN rail.

Field Installation Guidelines

• Ensure the DIN rail is bonded to the cabinet’s protective earth.
• Tighten screw connections to manufacturer torque recommendations to prevent loosening under vibration.
• Maintain conductor insulation clearances to avoid accidental contact with adjacent terminals.
• Route high‑current conductors separately from signal wiring to reduce noise coupling.
• Verify continuity after installation using panel‑level test equipment.