Allen-Bradley 1492-H4 1492 Series Fusible Terminal Block with Neon Indicator

Product Overview

The Allen-Bradley 1492-H4 functions as a high-performance fusible terminal block within the renowned 1492 Series. This single-pole component provides essential overcurrent protection for AC control circuits, supporting loads up to 15 Amps at 300V AC. It features an integrated Neon blown fuse indicator that provides immediate visual confirmation of circuit interruptions, drastically reducing maintenance troubleshooting time. We supply this unit in 100% Brand New condition, ensuring pristine screw terminals and reliable indicator performance for your critical power distribution panels.

Technical Specifications

• Product Type: Fusible Terminal Block

• Voltage Rating: 300V AC

• Maximum Current: 15 Amps

• Number of Poles: 1-Pole

• Terminal Style: Heavy-duty Screw Terminal

• Blown Fuse Indicator: Neon Indicator (Glows when fuse opens)

• Dimensions: 1.85" (L) x 3.2" (W) x 0.36" (H)

• Color: Black

• Product Family: 1492 Series

• Unit Weight: 0.05 lbs (0.02 kg)

Engineering Advantages

The 1492-H4 optimizes industrial control cabinet safety and efficiency through several technical design benefits:

• Rapid Fault Localization: The built-in Neon indicator activates specifically when the fuse blows. This visual signal allows technicians to identify failed circuits from a distance without opening the fuse holder or using a multimeter, minimizing machine downtime.

• High-Density Footprint: The slim 0.36-inch width enables high-density mounting on standard DIN rails. This allows engineers to consolidate circuit protection for multiple independent branches within a compact rail segment, freeing up space for additional I/O or communication hardware.

• Robust Vibration Resistance: The heavy-duty screw terminals provide high-torque clamping on conductors. This mechanical security prevents wire loosening caused by thermal cycling or industrial machinery vibration, maintaining a gas-tight, low-resistance connection for currents up to 15 Amps.

• Streamlined Maintenance: The open-style design facilitates quick fuse inspections and replacements. By integrating the fuse holder directly into the terminal strip, the 1492-H4 eliminates the need for separate fuse blocks and the associated complex wiring.

FAQs

• Does the Neon indicator work on DC circuits?

  No. Neon indicators require the alternating voltage of an AC system (rated up to 300V AC) to ionize the gas and glow. For DC applications, you should select a terminal block with an LED-based indicator.

• Is this a Brand New original product?

  Yes. We guarantee this 1492-H4 is 100% Brand New original factory stock. Utilizing brand-new terminal blocks ensures that the screw threads are undamaged and the neon bulb maintains its full rated service life.

• Which fuse size fits the 1492-H4?

  The 1492-H4 typically accepts standard 1/4 x 1-1/4 inch (6.3 x 32 mm) cartridge fuses. Always ensure the fuse amperage does not exceed the 15 Amp module rating.

• How does the indicator draw power?

  The Neon indicator circuit connects in parallel with the fuse. While the fuse is intact, current follows the path of least resistance through the fuse. When the fuse opens, the voltage drop across the holder powers the neon bulb to signal the fault.