Xiamen ZhiCheng Automation Technology Co., Ltd
"Precision Engineered, Globally Trusted – Innovating Automation Control & Modular Excellence."
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The Allen-Bradley 1492-H4 is a PCB/panel-mount terminal block designed for secure, high-density wiring in industrial control systems. Part of Rockwell Automation’s 1492 Series, it features polyamide insulation with UL 94V-0 flame resistance and nickel-plated copper alloy contacts for low-resistance connections. This screw-clamp terminal accepts 12–24 AWG wires and supports voltages up to 600V AC/DC, making it ideal for PLC I/O, motor control centers (MCCs), and power distribution panels. Its compact design (5.08 mm pitch) enables space-efficient DIN rail mounting, while color-coded markers and test points simplify installation and diagnostics in high-vibration environments.
The 1492-H4 is integral to industrial automation wiring infrastructures:
| Category | Parameter | Specification / Value | Notes |
|---|---|---|---|
| Product Identity | Manufacturer | Rockwell Automation / Allen-Bradley | |
| Catalog Number | 1492-H4 | Class H Rejection-Style Fuse Holder | |
| Series | 1492 Circuit Protection | Compatible with 1492-SP, 1492-HD Series panels | |
| Electrical Ratings | Voltage Rating | 600V AC/DC | Max. system voltage |
| Current Rating | 600A max. (per fuse) | Limited by fuse size; see compatible fuses | |
| Interrupting Rating | 200kA | Dependent on fuse used | |
| Mechanical | Fuse Type Compatibility | Class H (K5, KRP-C) | Rejection-style clips prevent incorrect fuse installation |
| Fuse Sizes Supported | 0–600A (Size K5) | Accepts fuses: 1–600A (Type KRP-C), 0–600A (Type H) | |
| Termination | Screw Clamp | Dual 3/8"–16 UNC screws per terminal | |
| Wire Size Range | 14–250 kcmil | Copper conductors only | |
| Torque Specification | 70 lb·in (7.9 N·m) | For terminal screws | |
| Materials & Construction | Housing Material | Thermoset Plastic | UL 94V-0 flame-rated |
| Contacts | Tin-Plated Copper Alloy | Low-resistance, corrosion-resistant | |
| Mounting | Panel-Mount | Requires cutout in panel (standardized for 1492 systems) | |
| Environmental | Operating Temperature | -40°C to +80°C | Industrial operating range |
| Humidity | 5–95% RH (non-condensing) | ||
| Enclosure Rating | IP20 (Requires panel/enclosure for protection) | ||
| Certifications | Safety Standards | UL 248-10, CSA C22.2 | Class H fuse holder standard |
| Agency Approvals | UL Recognized, CSA Certified | Complies with NEC, IEC, and global standards | |
| RoHS | Compliant | ||
| Key Features | Rejection Clips | Prevents installation of non-Class H fuses | Safety-critical for code compliance |
| Visual Indication | Compatible with fuse status indicators (e.g., 1492-FI) | Optional add-on | |
| Isolation | Barriers separate line/load terminals | Reduces arc flash risk during maintenance | |
| Modular Design | Integrates with 1492-SP/HD panel systems | Snap-in installation | |
| Physical Specs | Dimensions (H × W × D) | 89 mm × 76 mm × 45 mm | Standardized for 1492-SP panels |
| Weight | 0.45 kg | ||
| Compatibility | Panel Systems | 1492-SP, 1492-HD Series | Rockwell’s modular circuit protection panels |
| Accessories | • 1492-FI: Fuse status indicator • 1492-RT: Rejection tool • 1492-CB3: Barrier kit | Safety/visibility enhancements | |
| Ordering Notes | Base Part | 1492-H4 | Fuse holder only (fuses sold separately) |
| Fuse Examples | Bussmann KRP-C-600SP (600A, 600V) | Class H rejection fuse |
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Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are
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we are major in PLC,Sensors,HIM,Transmitters.
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