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The LRD1522 from Schneider Electric is a thermal overload relay designed for efficient performance in electrical applications. With a thermal protection range of 17 to 25 A, this relay operates effectively under various network frequencies, accommodating up to 400 Hz.
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| Manufacturer | Schneider Electric |
|---|---|
| Product Type | Thermal Overload Relay |
| Product Line | TeSys |
| Part Number | LRD1522 |
| Weight | 0.50 lbs (0.23 kg) |
| Thermal Overload Class | Class 20 |
| Thermal Protection Range | 17 to 25 A |
| Network Frequency | 0 to 400 Hz |
| Auxiliary Contact Composition | 1 NO Contact and 1 NC Contact |
| Conventional Free-Air Thermal Current | 5 A Signalling Circuit |
| Rated Operating Voltage | 690 VAC |
| Impulse Withstand Voltage | 6 kV |
| IP Protection | IP20 |
| Fire Resistance | 850 °C |
| Dielectric Strength | 1.89 kV |
| Tripping Threshold | 1.14 +/- 0.06 Ir |
Designed for the TeSys series, the Schneider Electric LRD1522 serves as a reliable thermal overload relay in an array of systems. This component effectively protects motors and other equipment by operating within a thermal overload class of 20. Its protection range accommodates currents between 17 and 25 amperes, allowing it to cater to a variety of operational needs. Additionally, frequencies between 0 and 400 Hz are supported, making it suitable for diverse applications in industrial settings.
In terms of auxiliary contacts, the LRD1522 includes both a normally open and a normally closed contact, enhancing its functionality. The relay can handle a conventional free-air thermal current of 5 amperes in a signaling circuit, ensuring it can support associated control systems efficiently.
Rated for a maximum operating voltage of 690 VAC, the LRD1522 is built to withstand substantial electrical demands. The device boasts an impressive impulse withstand voltage of 6 kV, contributing to its capability to handle transient spikes. Its protection rating of IP20 indicates that it is optimized for indoor use where exposure to dust and moisture is limited.
The fire resistance of this relay is rated at 850 °C, highlighting its robustness in high-temperature applications. With a dielectric strength of 1.89 kV, the LRD1522 is designed to maintain reliable performance in demanding conditions. The tripping threshold is set at 1.14 with a tolerance of +/- 0.06 times the rated current, allowing for precise overload protection across its operating range. Overall, the Schneider Electric LRD1522 thermal overload relay combines versatility with resilience, making it a critical component in safeguarding electrical systems against overload scenarios.