<h2>Overview</h2>
<p>The <strong>Bussmann FRS-R-250</strong> is a Class RK5 dual-element, time-delay fuse designed for industrial branch circuits and motor protection. Rated 250A at 600 VAC (300 VDC), this cartridge fuse provides advanced protection against overcurrent faults in commercial and industrial electrical systems. The FRS-R series combines time-delay characteristics with current-limiting performance, making it ideal for installations where transient inrush currents occur.</p>
<h2>Key Features</h2>
<ul>
<li><strong>Dual-Element Design:</strong> Time-delay element tolerates normal inrush currents while the current-limiting element protects against severe faults.</li>
<li><strong>Class RK5 Certification:</strong> Meets UL 198-2 RK5 standards with 200 kA interrupt rating.</li>
<li><strong>High Voltage Rating:</strong> 600 VAC / 300 VDC capability suitable for main branch feeders and heavy industrial loads.</li>
<li><strong>Approvals:</strong> UL, CSA, and CE certified for global compliance.</li>
<li><strong>Standard Cartridge Form:</strong> 2.34" diameter × 11.63" length (59.44 × 295.4 mm) for bolt-on or holder-mount installations.</li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li><strong>Rated Current:</strong> 250 A</li>
<li><strong>Voltage Rating (AC):</strong> 600 VAC</li>
<li><strong>Voltage Rating (DC):</strong> 300 VDC</li>
<li><strong>Fuse Class:</strong> RK5</li>
<li><strong>Time Delay:</strong> Slow Blow (Dual-Element)</li>
<li><strong>Interrupt Rating:</strong> 200 kA (RMS)</li>
<li><strong>Dimensions:</strong> 2.34" Diameter × 11.63" Length (59.44 × 295.4 mm)</li>
<li><strong>Weight:</strong> 3.67 lbs</li>
<li><strong>Approvals:</strong> UL, CSA, CE</li>
</ul>
<h2>Typical Applications</h2>
<p>The FRS-R-250 is commonly used in:</p>
<ul>
<li>Industrial motor feeders and branch circuits</li>
<li>Manufacturing equipment and machinery protection</li>
<li>Power distribution panels in commercial facilities</li>
<li>Automation control systems and control panels</li>
<li>Heavy-load industrial installations requiring 250A protection at 600V</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>Standard R and RK5 fuse holders and carriers rated 250A</li>
<li>Class RK5 compliant power distribution systems</li>
<li>600V industrial feeder circuits and branch panels</li>
<li>Motor control centers (MCCs) with Class RK5 fuse provisions</li>
<li>UL/CSA-listed electrical enclosures rated 600V</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<ul>
<li>Bussmann FRS-R-250 (all manufacturing revisions)</li>
<li>Cooper Bussmann FRS-R-250</li>
<li>Fusetron FRS-R-250</li>
</ul>
<h3>Works With</h3>
<ul>
<li>Class RK5 dual-element time-delay fuse systems</li>
<li>ANSI/UL 198-2 compliant electrical installations</li>
<li>Bolt-on and cartridge-style fuse holders</li>
<li>600VAC industrial control and distribution networks</li>
</ul>
