Thermal overload relay RE317D-420 004656312

Thermal overload relay RE317D-420

This thermal relay is a reliable safety element protecting electrical circuits against overload. Designed for independent mounting, it provides effective protection for motors and other electrical devices, preventing damage due to excessive current draw. Thanks to its wide current setting range, it is a versatile solution for various applications.

Construction and application

The RE317D-420 relay is primarily a protective element that reacts to temperature increases caused by overload. Its operation is based on the principle of bimetal – when the current exceeds the set value, the bimetal bends, causing the contacts to disconnect and cutting off the power supply. This prevents serious failures and costly downtime. It is mainly used in motor control systems, but can be used wherever overload protection is required.

Key features and benefits

• Wide current setting range: from 100 to 420A – allows adaptation to specific installation needs and protected devices.
• Independent mounting: simplifies installation and servicing, providing flexibility in placement in the distribution board.
• Screw connection of main contacts: ensures a secure and durable connection of wires, minimizing the risk of loosening connections.
• Overload relay function: protects devices from damage caused by prolonged current draw above the nominal value.
• Weight 2 kg: compact dimensions and low weight facilitate installation and transport.
• ETIM classification EC000106: simplifies product identification in catalog and ordering systems.

The RE317D-420 thermal relay is a solid solution for professionals and users looking for reliable protection of their electrical installations. Its versatility and ease of installation make it an ideal choice for both new installations and modernization of existing systems.