<h2>Overview</h2>
<p>The <strong>Gould Modicon B351 input module</strong> and B350 output module form a complete I/O pair for legacy Modicon Micro 84 PLC systems. The B351 is an eight-point 115VAC input module that acquires discrete control signals from field devices, while the B350 output module delivers command signals to actuators and solenoids. These modules represent industrial-proven automation hardware from the era when Gould manufactured Modicon controllers—now part of the Schneider Electric portfolio.</p>
<h2>Key Features</h2>
<ul>
<li>Eight independent 115VAC discrete inputs on B351</li>
<li>1500 VAC circuit isolation for field-side protection</li>
<li>LEXAN case construction with flow-through convection cooling</li>
<li>Field-side status indicator lamps for real-time signal diagnostics</li>
<li>Self-contained mounting brackets—no external I/O housing required</li>
<li>IEEE and ANSI surge withstand capability (SWC) compliant</li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li><strong>B351 Input Module</strong></li>
<li>Input Voltage: 115VAC</li>
<li>Input Points: 8 discrete</li>
<li>Circuit Isolation: 1500 VAC</li>
<li>Mounting: DIN rail compatible</li>
<li>Housing: LEXAN, light-weight durable case</li>
<li>Weight (B351): Approximately 578 grams</li>
<li><strong>B350 Output Module</strong></li>
<li>Companion output module for Modicon Micro 84 systems</li>
</ul>
<h2>Typical Applications</h2>
<p>These modules serve maintenance, retrofit, and expansion roles in legacy Modicon Micro 84 automation systems, including:</p>
<ul>
<li>Manufacturing process control and machine sequencing</li>
<li>Building HVAC and facility automation</li>
<li>Pump and motor control stations</li>
<li>Industrial discrete signal acquisition and distribution</li>
<li>System upgrades where legacy Micro 84 compatibility is required</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>Modicon Micro 84 PLC controllers</li>
<li>Modicon M2M controllers</li>
<li>Modicon M221 controllers</li>
<li>Schneider Electric Modicon series systems</li>
<li>DIN rail-based industrial control cabinets</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<p>Direct replacement for original Gould B351 input module and B350 output module units in existing Micro 84 configurations. Verify serial number and revision level with your system documentation before ordering.</p>
<h3>Works With</h3>
<ul>
<li>Modicon controller ladder logic programming</li>
<li>115VAC field control circuits and sensors</li>
<li>DIN rail mounting infrastructure</li>
<li>Industrial-grade surge protection and isolation devices</li>
</ul>
