Why Choose the Chint NR2-D33 Thermal Overload Relay?
The Chint NR2-D33 is a robust thermal overload relay designed to provide reliable protection for three-phase AC motors against overload and phase failure conditions. As part of the trusted Chint NR2 thermal overload relay series, it offers adjustable motor protection for industrial control systems, machinery and automation applications.
This overload relay uses a three-phase bimetal protection structure with continuously adjustable current settings, allowing accurate protection of motors under different operating conditions. The NR2 series includes temperature compensation, trip indication, test functionality and selectable manual or automatic reset modes to simplify installation and maintenance.
The Chint NR2-D33 is suitable for use with compatible contactors in motor starter assemblies and electrical control panels. It provides dependable motor protection for pumps, fans, conveyors and industrial equipment where reliable overload monitoring is required.
Key Advantages
- Reliable thermal overload protection for three-phase AC motors.
- Adjustable current protection for flexible motor control applications.
- Protects against motor overload and phase failure conditions.
- Three-phase bimetal construction for dependable operation.
- Temperature compensation improves protection accuracy.
- Compatible with Chint contactor-based motor starter systems.
Key Features
- Chint NR2 thermal overload relay series.
- Three-phase bimetal thermal protection design.
- Continuously adjustable overload current setting.
- Class 10A tripping characteristic.
- Manual and automatic reset selection.
- Built-in test and stop buttons.
- Visual trip indication.
- Electrically separated auxiliary contacts with 1NO + 1NC configuration.
Reliable Motor Protection for Industrial Applications
Thermal overload relays such as the Chint NR2-D33 monitor motor current and respond when sustained overload conditions occur, helping prevent excessive heating and improving the operational reliability of industrial electrical systems.
The NR2 series is designed for automation engineers, panel builders and maintenance professionals requiring dependable motor protection with straightforward adjustment, diagnostics and integration into contactor-based control systems.
Typical Applications
- Industrial motor starters.
- Pumps and water handling systems.
- Fans and ventilation equipment.
- Material handling conveyors.
- Production machinery.
- Industrial automation control panels.
