Allen-Bradley 1492-H4 Fusible Terminal Block Overview
The Allen-Bradley 1492-H4 is a single-pole fusible terminal block from Rockwell Automation’s 1492 Series, designed for straightforward circuit protection and fuse-holder functionality in industrial control panels and equipment. Built with screw connections and a neon blown fuse indicator, this terminal block provides visual confirmation of blown fuses without requiring panel inspection or multimeter testing. The box of 25 units is standard packaging for OEM and system integrator applications.
Key Features
- Neon blown fuse indicator for instant visual fault detection
- Single-pole, single-circuit design rated 15A maximum current
- Screw terminal connections rated for #30–12 AWG (0.5–4 mm²) wire
- Operating temperature range –40°C to 105°C
- Compact footprint: 9.1 × 81.3 × 47 mm (0.36 × 3.20 × 1.85 in)
- UL, CSA, CE, and IEC certified for global applications
Technical Specifications
| Voltage Rating | 100–300V AC/DC |
| Maximum Current | 15A |
| Wire Size | #30–12 AWG (0.5–4 mm²) |
| Connection Type | Screw Terminal |
| Number of Poles | 1 |
| Wire Strip Length | 0.38 in. (9.7 mm) |
| Tightening Torque | 7.1 lb-in (0.8 N·m) |
| Dimensions (L × W × H) | 81.3 × 9.1 × 47 mm (3.20 × 0.36 × 1.85 in) |
| Operating Temperature | –40°C to +105°C |
| Color | Black |
| Certifications | UL, CSA, CE, IEC |
| Packaging | Box of 25 |
| Weight | 0.05 lbs per unit |
Typical Applications
The 1492-H4 terminal block is commonly used in:
- Motor control panels and variable frequency drives (VFDs)
- PLC input/output power supplies
- Distributed automation systems and remote I/O enclosures
- Machine-mounted control cabinets
- Incoming AC/DC line protection on sensor and signal circuits
Compatibility & Replacements
The 1492-H4 is compatible with standard 35 mm DIN rail mounting systems found in industrial control enclosures. Rockwell Automation offers additional 1492 Series variants with different voltage ratings (H5 for 10–57V, H6 for 500V) and configurations for specialized applications. When replacement is required, verify voltage rating, current capacity, and wire gauge compatibility with your specific application. Ensure fuse cartridge specifications match the 1492 Series holder design.
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