<h2>Overview</h2>
<p>The <strong>Allen-Bradley 100-A18NZ*3</strong> is a Bulletin 100 industrial AC contactor engineered for motor control and switching applications. The 3-pole (*3) configuration accommodates three-phase motors and provides robust handling of AC loads up to 18A continuous duty. This Series B unit is widely used in HVAC, manufacturing, conveyor systems, and general industrial automation where reliable load switching is critical.</p>
<h2>Key Features</h2>
<ul>
<li><strong>3-Pole Configuration:</strong> Manages three-phase AC motors and ensures efficient three-phase load control.</li>
<li><strong>18A Rated Current:</strong> Continuous duty rating suitable for moderate-power motor applications and general switching loads.</li>
<li><strong>Silver Alloy Contacts:</strong> Enhances durability, arc resistance, and long service life under repeated cycling.</li>
<li><strong>Compact Design:</strong> Space-efficient footprint facilitates installation in control panels and enclosures.</li>
<li><strong>Auxiliary Contact Support:</strong> One normally open (1NO) auxiliary contact for integrated control logic and status indication.</li>
<li><strong>Wide Operating Temperature Range:</strong> Operates reliably from –25°C to +55°C (–13°F to 131°F).</li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li><strong>Rated Continuous Current:</strong> 18A AC</li>
<li><strong>Number of Poles:</strong> 3</li>
<li><strong>Auxiliary Contacts:</strong> 1NO (normally open)</li>
<li><strong>Horsepower Ratings:</strong> Up to 10 HP at 480V AC; 4 kW at 220V, 7.5 kW at 380–415V, 11 kW at 500–690V</li>
<li><strong>Contact Material:</strong> Silver alloy</li>
<li><strong>Frequency:</strong> 50/60 Hz</li>
<li><strong>Operating Temperature:</strong> –25°C to +55°C (–13°F to 131°F)</li>
<li><strong>Mounting:</strong> Panel or DIN rail mount</li>
<li><strong>Dimensions (approx.):</strong> 4.2 × 3.5 × 4.3 inches</li>
<li><strong>Weight (approx.):</strong> 5 lbs</li>
<li><strong>Series:</strong> Bulletin 100, Series B</li>
</ul>
<h2>Typical Applications</h2>
<ul>
<li>AC motor control in HVAC systems (compressors, fan motors)</li>
<li>Conveyor and material handling equipment</li>
<li>Manufacturing process automation and machinery</li>
<li>Pump and compressor motor control</li>
<li>General-purpose industrial load switching</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>Allen-Bradley Bulletin 100 control architecture</li>
<li>Industrial motor starters and control panels</li>
<li>Standard AC power distribution systems (50/60 Hz)</li>
<li>Overload relays and protective devices</li>
<li>Manual and automatic motor starters</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<ul>
<li>Other Bulletin 100 Series B 18A 3-pole AC contactors with matching coil voltage and auxiliary contact configuration</li>
<li>Verify exact coil voltage (24 VDC, 120 VAC, 220 VAC, etc.) and auxiliary contact requirements before ordering</li>
</ul>
<h3>Works With</h3>
<ul>
<li>Allen-Bradley Studio 5000 and legacy RSLogix platforms for control logic integration</li>
<li>Standard IEC 61508 industrial automation protocols</li>
<li>Hardwired control circuits and relay logic</li>
<li>AC voltage detection and protection schemes</li>
</ul>
