1492-EBJ3 | Allen-Bradley | 1492 Series Terminal Block End Barrier

Product Overview

The 1492-EBJ3 functions as the essential finishing component for the Allen-Bradley 1492 screw-type terminal block assembly. This end barrier provides the necessary insulation and physical closure for the open side of a terminal block stack. It prevents accidental contact with live internal bus bars and ensures the entire DIN rail assembly meets industrial safety standards. We supply this unit as 100% Brand New original hardware, guaranteeing a precise mechanical fit and consistent dielectric protection for your control panel wiring.

Technical Specifications

The 1492-EBJ3 features a low-profile design optimized for high-density DIN rail configurations:

Engineering Advantages

• Enhanced Finger Safety: The 1492-EBJ3 seals the exposed conductive parts of the last terminal block in a row. This creates an IP20-rated touch-safe environment, protecting maintenance personnel from electrical shock during routine inspections.

• Instant Snap-On Integration: The tool-less mounting design allows for rapid installation. Technicians simply snap the barrier onto the end of the terminal stack, where it locks securely into place without additional fasteners.

• Effective Creepage & Clearance: By physically separating adjacent circuits and closing off the stack, this barrier maintains required creepage and clearance distances. This prevents electrical arcing between high-voltage blocks and grounded enclosure surfaces.

• Durable Industrial Construction: The high-grade gray polyamide material resists mechanical impacts and withstands the thermal fluctuations common in industrial control cabinets.

• Standardized Form Factor: The 1.5mm thickness minimizes the horizontal footprint on the DIN rail. This allows engineers to maximize terminal density while still adhering to strict electrical isolation protocols.

Installation Guidelines

1. Placement: Identify the open side of the final 1492-J3 (or compatible) terminal block in your DIN rail assembly.

2. Alignment: Align the 1492-EBJ3 profile with the shape of the terminal block. Ensure the locking tabs line up with the corresponding recesses on the block.

3. Engagement: Press the barrier firmly against the block until the snap-on mechanism engages. The barrier must sit flush against the terminal block to provide a complete seal.

4. Final Check: Verify that no conductive bus bars or metal parts remain visible from the side of the assembly.

FAQs

Q: Why do I need the 1492-EBJ3 for my terminal block stack?

A: IEC-style terminal blocks typically feature one open side to facilitate internal bridging. The 1492-EBJ3 closes this open side, preventing short circuits and providing necessary electrical insulation for the end of the row.

Q: Is the 1492-EBJ3 compatible with spring-clamp (finger-safe) blocks?

A: The 1492-EBJ3 specifically matches the profile of screw-type terminal blocks, such as the 1492-J3 series. Spring-clamp modules usually require a different barrier profile tailored to their specific housing dimensions.

Q: Can I use this barrier to separate different voltage levels on the same rail?

A: Yes. Beyond serving as an end cap, engineers often insert the 1492-EBJ3 between groups of terminal blocks to provide a physical and visual divider between different circuit types or voltage levels.

Q: Does this end barrier require a DIN rail end anchor?

A: While the 1492-EBJ3 snaps onto the block itself, you should always use an end anchor (like the 1492-EAJ35) to keep the entire terminal block assembly and the end barrier from sliding along the DIN rail.