nr2-25-6 chint thermal overload relay, 4.00a to 6.00a rated current

Why Choose the CHINT NR2-25-6 Thermal Overload Relay?

The CHINT NR2-25-6 is a dependable thermal overload relay engineered to protect three-phase AC motors against overload and phase failure conditions in industrial control systems. As part of the proven CHINT NR2 overload relay range, this device delivers reliable motor protection for machinery, automation panels and motor starter assemblies.

Featuring a precision bimetal thermal tripping mechanism, the NR2-25-6 provides accurate overload protection while helping extend motor service life and reduce unexpected downtime. Its adjustable current setting and integrated phase loss sensitivity make it suitable for demanding industrial motor control environments.

With an adjustable current range of 4 A to 6 A, the NR2-25-6 is ideal for small and medium industrial motors used in pumps, conveyors, compressors and manufacturing equipment. The relay mounts directly onto compatible CHINT contactors for compact installation and simplified wiring inside control panels.

Key Advantages

• Reliable motor overload and phase failure protection.
• Adjustable current range from 4 A to 6 A.
• Compatible with CHINT NC1 and related contactor series.
• Integrated manual and automatic reset functions.
• Compact design for motor starter and MCC applications.
• Temperature compensated tripping improves protection stability.

Key Features

• CHINT NR2 thermal overload relay series.
• 4 A to 6 A adjustable overload setting.
• Three-phase thermal bimetal protection.
• Integrated phase failure sensitivity.
• Manual and automatic reset selector.
• Built-in STOP and TEST buttons.
• 1 NO + 1 NC auxiliary contacts.
• Direct mounting onto compatible CHINT contactors.

Technical Specifications

• Manufacturer: CHINT
• Series: NR2 Thermal Overload Relay
• Model: NR2-25-6
• Product type: Thermal overload relay
• Current adjustment range: 4 A to 6 A
• Rated insulation voltage: 690 V AC
• Frequency: 50 / 60 Hz
• Tripping class: Class 10A
• Auxiliary contacts: 1 NO + 1 NC
• Reset mode: Manual / Automatic selectable
• Protection functions: Overload and phase failure protection
• Mounting type: Direct contactor mounting
• Protection rating: IP20 when installed
• Compliance standards: IEC/EN 60947-4-1

Efficient Protection for Industrial Motor Circuits

Thermal overload relays help prevent motor damage caused by excessive current draw, mechanical overload or phase imbalance. The CHINT NR2-25-6 continuously monitors motor current and trips the connected contactor when unsafe operating conditions occur.

Designed for industrial automation systems and machine control panels, the NR2 series offers dependable motor protection with straightforward installation. Its compact dimensions and compatibility with CHINT contactors make it suitable for OEM machinery and industrial electrical assemblies.

Typical Applications

• Motor starter assemblies and MCC panels.
• Industrial conveyors and handling systems.
• Pumps, compressors and ventilation systems.
• Manufacturing and processing equipment.
• HVAC motor protection circuits.
• OEM machine building and automation systems.

Trusted by Industrial Engineers Worldwide

CHINT NR2 overload relays are widely used in industrial motor control systems to provide dependable overload protection, improved equipment reliability and efficient machine operation.