The LRD21 is a thermal overload relay from Schneider Electric. It is designed to protect a.c. circuits and motors against overloads. The relay has a thermal setting range of 12-18A and a tripping class of 10A. It can be used to protect 3-phase motors up to 7.5kW at 400V.
The LRD21 has a number of features that make it a versatile and reliable choice for overload protection. These features include:
- Differential device with phase failure (loss) detection
- Manual-automatic reset selector
- Test selector for simulation of a tripping
- Reset and stop buttons
- Flag indicator
- 2 auxiliary contacts (1NO+1NC) for fault signalling
The LRD21 is easy to install and use. It can be mounted on a DIN rail or screwed directly to a contactor. The relay’s settings are protected by a transparent cover that can be locked with a seal.
The LRD21 is a reliable and versatile thermal overload relay that is ideal for protecting a.c. circuits and motors against overloads. It is easy to install and use, and it meets a wide range of international standards.
Here are some additional details about the LRD21:
- Dimensions: 90 x 60 x 30mm
- Weight: 0.2kg
- Operating temperature range: -25°C to +60°C
- Storage temperature range: -40°C to +70°C
- Protection class: IP20
The LRD21 is backed by a 2-year warranty from Schneider Electric.
Here are some of the benefits of using the LRD21:
- Improved safety: The LRD21 can help to prevent fires and other accidents caused by electrical overloads.
- Increased uptime: The LRD21 can help to prevent downtime caused by motor burnout.
- Reduced costs: The LRD21 can help to reduce the cost of repairs and replacements caused by electrical overloads.
If you are looking for a reliable and versatile thermal overload relay, the LRD21 is a great option. It is easy to install and use, and it meets a wide range of international standards