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LRD10
The Schneider Electric LRD10 is a thermal overload relay designed to provide reliable protection for electrical circuits. It accommodates up to 6 A of adjustable thermal protection and conforms to Class 10A specifications under IEC 60947-4-1. Rated for use in both AC and DC networks, it operates efficiently across a frequency range of up to 400 Hz, ensuring compatibility with various industrial applications.
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Technical specifications for LRD10
| Manufacturer | Schneider Electric |
|---|---|
| Product Type | Differential thermal overload relay |
| Product Line | TeSys |
| Part Number | LRD10 |
| EAN | 3389110346794 |
| Weight | 0.31 lbs (0.14 kg) |
| Series | Breakers |
| Thermal Overload Class | Class 10A (IEC 60947-4-1) |
| Adjustable Thermal Protection | 4…6 A |
| Rated Insulation Voltage | 690 V (IEC), 600 V (UL, CSA) |
| Network Type | AC, DC |
| Operating Frequency | 0…400 Hz |
| Tripping Sensitivity | 1.14 ± 0.06 × Ir (IEC 60947-4-1) |
| Auxiliary Contacts | 1 NO + 1 NC |
| Thermal Current | 5 A (signaling circuits) |
| Permissible Current | 3 A at 120 V AC-15, 0.22 A at 125 V DC-13 |
| Impulse Withstand Voltage | 6 kV |
| Phase Failure Sensitivity | Trips at 130% of Ir on two phases |
| Mounting Options | Rail, plate, under contactor |
| Operating Temperature | -20°C to 60°C |
| Ingress Protection | IP20 (IEC 60529) |
The LRD10 by Schneider Electric functions as a differential thermal overload relay, offering critical protection in electrical systems. Designed to ensure safety, this relay operates within a thermal overload class of 10A as per IEC 60947-4-1 standards. Users can set adjustable thermal protection ranging from 4 A to 6 A, promoting flexibility based on the specific requirements of their applications.
This relay supports both AC and DC network types, making it versatile for various setups. It operates effectively across a frequency range of 0 to 400 Hz, thus accommodating diverse frequency requirements in modern applications. The two-phase phase failure sensitivity triggering occurs at 130% of the rated current, enhancing operational safety.
For additional functionality, the LRD10 includes auxiliary contacts comprising one normally open (NO) and one normally closed (NC) configuration. This is beneficial for integrating signaling circuits where monitoring is essential. The device can deal with a thermal current of 5 A, and has a permissible current of 3 A for 120 V AC-15 and 0.22 A at 125 V DC-13.
The relay also features a rated insulation voltage of 690 V (IEC) and 600 V (UL, CSA), suitable for high-voltage environments. With an impulse withstand voltage rating of 6 kV, it offers robustness against transient events. Various mounting options (rail, plate, under contactor) ensure installation flexibility.
The LRD10 operates reliably under a temperature range of -20°C to 60°C, making it resilient across multiple conditions. Ingress protection rated at IP20 confirms that the relay is intended for general indoor use while offering moderate protection against dust and contact with solid objects. The Schneider Electric LRD10 thermal overload relay is a crucial component for ensuring the longevity and safety of electrical installations.
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