Allen-Bradley 1492-CJJ5-10 10-Pole Center Jumper

Configured for multi-terminal commoning in DIN-rail terminal block assemblies, the Allen-Bradley 1492-CJJ5-10 (1492-CJJ5-10 Center Jumper) provides direct physical/electrical execution of potential distribution across 10-pole terminal sequences.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks

The 1492-CJJ5-10 is utilized to establish common voltage potentials across terminal block arrays, facilitating efficient I/O density scaling within control cabinets. While this component is a passive mechanical accessory, its integration ensures consistent electrical distribution for signal and power loops. Users must confirm that the current load of the commoned potential does not exceed the ampacity rating of the jumper or the terminal block cross-connection point. Proper installation ensures that diagnostic loops, which may eventually feed into Profinet or EtherNet/IP deterministic networks, maintain low-impedance electrical paths, preventing voltage drop or signal noise in modular automation platforms.

Frequently Asked Questions

Q: Can this jumper be cut to a different pole count?

A: Yes. The 1492-CJJ5-10 is designed for field modification. It can be cut to fit specific terminal block counts (e.g., to create a 3-pole or 5-pole jumper) using appropriate cutting tools, provided the remaining jumper maintains adequate insulation and structural integrity.

Q: Is a torque specification required for the screw-type installation?

A: Yes. When securing the jumper screw into the terminal block, ensure the screw is tightened to the manufacturer's specified torque rating to prevent loose connections, which can lead to high resistance, heat generation, and potential circuit failure.

Field Installation Guidelines

1. Ensure the terminal block system is de-energized prior to installing or modifying any jumper components.
2. Insert the center jumper into the designated channel on the top of the terminal block array.
3. If the required pole count is less than 10, cut the jumper to the necessary length using a sharp-edged tool, ensuring no burrs remain that could compromise electrical clearances.
4. Align the jumper pins with the terminal block connection points and press firmly until fully seated.
5. Secure the assembly by tightening the integrated screw fasteners into the terminal block bodies.
6. Perform a continuity check between the jumpered terminals to verify a uniform electrical potential across the entire assembly before applying control power.