<p>When selecting a thermal overload relay for industrial or commercial applications, it&#39;s crucial to focus on the technical specifications that ensure compatibility and efficiency. This particular thermal overload relay offers a robust solution with its dependable features tailored for demanding environments.</p><p>Rated for operation at 690 VAC, this relay is designed to handle a rated current of 0.55 A, making it suitable for various motor protection tasks. The dual-frequency capability at 50/60 Hz ensures versatility across different systems and regions. With a power loss of just 1.9 W, it provides an energy-efficient option without compromising performance.</p><p>The relay&#39;s impulse withstand voltage is rated at an impressive 8 kV, while the insulation voltage matches the operational rating of 690 V, ensuring safety and reliability in high-voltage applications. Its contact configuration includes one normally closed (NC) and one normally open (NO) contact, facilitating integration into existing control circuits.</p><p>One of the standout features is its setting range between 22-28 A, allowing precise adjustments to match specific motor requirements. Classified under Trip Class 10, this relay offers quick response times to prevent overheating and potential damage.</p><p>In terms of protection standards, it boasts IP10 and IP20 degrees of protection against solid objects like dust particles—ideal for indoor use where environmental factors are controlled—and maintains an IP3 degree of pollution resistance.</p><p>Installation is straightforward with direct mounting capabilities. The dimensions—54.9 mm in width, 101.4 mm in height, and 106.9 mm in depth—make it compact enough to fit into tight spaces without sacrificing functionality.</p><p>Operationally versatile from -40&#176;C to +70&#176;C ensures reliable performance even in extreme conditions; storage temperature ranges from -50&#176;C to +80&#176;C further enhance durability during non-operational periods.</p><p>This thermal overload relay pairs seamlessly with AF40-AF65 contactors—a valuable detail when designing or upgrading electrical systems—and complies with numerous international standards such as IEC/EN 60947 series and UL certifications ensuring global applicability.</p><p>For short circuit protection up to 80 A using gG type fuses enhances system safety by preventing excessive currents from causing damage or failure within your equipment setup.</p><p>The screw-type electrical connection simplifies installation while providing secure contacts that minimize maintenance needs over time.</p><p>With automatic reset functionality embedded within its design framework reduces downtime by promptly restoring operations post-trip events without manual intervention necessary—an essential feature for continuous process industries seeking uninterrupted productivity flow.</p>