Chint NXR Thermal Overload Relay (17–25 A)

Model / Frame: NXR‑25 (Thermal Overload Relay)
– Frame class 25 with adjustable current range up to 25 A.

Adjustable Current Range: 17–25 A
– Allows precise thermal protection for mid-sized motors.

Rated Operating Voltage: Up to 690 V AC (50 Hz / 60 Hz)
– Supports both industrial and commercial power systems.

Protection Features:

• Thermal overload protection – safeguards motor from prolonged high-current conditions

• Phase-loss protection – prevents damage from single-phase operation
  – Both functions are standard in the NXR series.

Auxiliary Contacts:

• One Normally Open (NO)

• One Normally Closed (NC)
  – Useful for signaling, interlocks, or control circuits.

Control & Indicator Features:

• Trip (action) indication

• Stop/Test button

• Temperature compensation

• Reset Options: Manual reset standard (automatic reset available in select larger frames)
  – All included for user control and status monitoring.

Mounting Options:

• Plug-in mounting with compatible Chint NXC contactors

• Independent mounting using the MB‑2 base
  – Provides flexibility for installation.

Standards & Certification:

• Fully compliant with IEC/EN 60947‑4‑1 and IEC/EN 60947‑5‑1 safety standards
  – Ensures high operational reliability and global compliance.

Protection Rating (Enclosure): IP20
– Ensures protection against finger-touch and debris.

Environmental Specifications:

• Ambient operating range: –35 °C to +70 °C

• Normal recommended range: –5 °C to +40 °C
  – Temperature compensation feature ensures accurate operation across varying conditions.