Overview
The Allen-Bradley 1492-H4 is a single-circuit fusible terminal block engineered for dependable overcurrent protection in industrial control panels, power distribution systems, and automation equipment. This 1492-H4 fuse terminal block combines finger-safe design with built-in neon blown-fuse indication, enabling rapid fault diagnosis and minimizing troubleshooting downtime. Rated for 15 amps at 300V AC/DC, it accommodates wire sizes from #30 to #12 AWG (0.5–4 mm²).
Key Features
- Finger-Safe Design: Protected fuse holders prevent accidental contact with live components while maintaining easy access for installation and replacement
- Neon Blown-Fuse Indicator: Visual status monitoring allows maintenance staff to detect open-circuit conditions at a glance
- Single-Circuit Fusible Block: One pole, screw-type terminal connections for secure, reliable wire attachment
- High-Density Mounting: Compact 9.1 × 81.3 × 47 mm footprint optimizes space in crowded panel installations
- Wide Wire Range: Supports conductors from #30 to #12 AWG, accommodating diverse circuit requirements
- International Certifications: UL, CSA, IEC, CE, and KC approved for global deployment
Technical Specifications
- Voltage Rating: 100–300V AC/DC
- Maximum Current: 15 Amp
- Wire Range: #30–12 AWG (0.5–4 mm²)
- Conductor Size (Rated): 4 square mm
- Terminal Type: Screw connection
- Mounting Style: Pluggable
- Terminal Dimensions: 9.1 × 81.3 × 47 mm (0.36 × 3.20 × 1.85 in)
- Operating Temperature: −40 to +105 °C
- Fuse Compatibility: 13/32 in. × 1-1/2 in., 1/4 in. × 1-1/4 in., and GMT-type alarm fuses
- Color: Black
- Poles: 1
- Certifications: UL, CSA, IEC, CE, CCC, KC
- Series: 1492 Bulletin
- Package Quantity: 25 per box (multiples available)
Typical Applications
The 1492-H4 is widely deployed in:
- Industrial motor control centers and soft-starters
- Programmable logic controller (PLC) I/O distribution panels
- Machine tool and automation control cabinets
- Power distribution and branch-circuit protection
- OEM equipment and compact panel installations
- Instrumentation and low-voltage control circuits (100–300V)
Compatibility & Replacements
Compatible With
- Allen-Bradley 1492 Series terminal block systems
- Standard DIN rail mounting (via pluggable connection)
- Industrial fuse types: 13/32 × 1-1/2 in., 1/4 × 1-1/4 in., GMT alarm fuses
- Control systems operating at 100–300V AC/DC
- Panel assemblies requiring UL/CSA-certified components
Replaces / Drop-In Replacement For
- Earlier versions and legacy 1492-H series fusible terminal blocks (verify Series E compatibility with your integrator)
- Non-indicator fusible terminal blocks in equivalent footprint and current rating
Works With
- Standard industrial fuse standards (UL 248, IEC 60127)
- DIN-rail-mounted industrial control systems
- PLC and HMI panel backplanes
- Any control cabinet utilizing 4 mm² wire and 15A branch protection
