1492-W4 /A Allen-Bradley Terminal Block Box of 26

Overview

The Allen-Bradley 1492-W4 is a robust, single-circuit feed-through terminal block designed for reliable conductor management in industrial automation and control systems. Built to IEC standards and certified for international compliance, this terminal block accommodates both small signal wires and medium power conductors in a compact, DIN rail-mountable footprint.

Key Features

• Single-circuit feed-through design — simplifies wiring and reduces panel assembly time.
• Space-saver configuration — 4 mm terminal size (accommodates #22 AWG to #10 AWG wire) minimizes panel footprint.
• High current capacity — rated 30A/600V UL/CSA and 32A/800V IEC for power and control applications.
• IP2X finger-safe design — meets international IEC, UL, CSA, and ATEX safety standards.
• Screw-terminal connection — secure, tool-friendly, and field-serviceable.
• Color-coded options — available in gray (standard) and multiple color choices for circuit identification.

Technical Specifications

• Voltage Rating: 600V AC/DC (UL/CSA), 800V AC/DC (IEC), 550V AC/DC (ATEX)
• Current Rating: 30A (UL/CSA), 32A (IEC)
• Wire Size: 4 mm (#22 AWG – #10 AWG) or 2.5 mm (#22 AWG – #12 AWG)
• Terminal Type: Screw connection
• Configuration: Single-circuit, space-saver feed-through
• Mounting: 35 mm DIN rail (symmetrical)
• Dimensions: 6 × 45.3 × 35 mm (0.24 × 1.78 × 1.38 in)
• Wire Strip Length: 0.35 in (9 mm)
• Housing Material: Durable plastic
• Temperature Range: –40 to +90 °C (–40 to +195 °F)
• Certifications: IEC, UL, CSA, ATEX, CE, CCC
• Standard Package: 50 units per box

Typical Applications

The 1492-W4 terminal block is widely used in:

• Control panel wiring and branch circuit distribution
• Motor control circuits and starter panels
• PLC and automation system field wiring
• Power and signal routing in industrial enclosures
• Manufacturing, energy, and transportation automation systems
• Switchgear and protection device interconnection

Compatibility & Replacements

Compatible With

• 35 mm symmetrical DIN rail (steel or aluminum)
• Standard industrial control panels and enclosures
• Motor starters, contactors, and overload relays
• PLC analog and digital I/O modules
• All Bulletin 1492 mounting rail accessories

Replaces / Drop-In Replacement For

• Earlier gray 1492-W4 terminal blocks
• Verify exact model compatibility with your system integrator for color variants or variant codes.

Works With

• DIN-rail mounted automation components (relays, timers, contactors)
• IEC 61082 electrical schematic symbol standards
• Industry-standard panel assembly practices and tools
• Multi-conductor cable and individual wire installation