Schneider 821TD10H-UNI Modular Time Delay Relay

The Schneider 821TD10H-UNI is a modular time delay relay, part of Schneider Electric’s broader line of time delay relays. Time delay relays are typically used in industrial and automation applications to provide a delay between the initiation of a control signal and the relay’s action, such as turning on or off a machine or switching an electrical circuit.

Here are some key features of the Schneider 821TD10H-UNI:

1. Modular Design: The “modular” aspect refers to its ability to be mounted on a standard DIN rail, making installation flexible and easy within control panels.
2. Time Delay Functionality: It offers adjustable time delays for applications that require a delayed response. The time delay can be set to different ranges (usually in seconds or minutes), depending on your needs.
3. Universal Input: The “UNI” part of the model number suggests it has a universal input, meaning it can accept a wide range of voltage inputs (AC or DC).
4. Adjustable Time Delay: The device typically features a dial or rotary control to adjust the time delay settings. This allows for customization based on the specific timing needs of the application.
5. Wide Voltage Range: It can typically operate with input voltages ranging from 24V to 240V, either AC or DC, making it quite versatile.
6. Applications: It is used in various industrial automation and control systems, such as motor control, HVAC systems, and lighting controls, where you need to delay the start or stop of an action.