Chint NXR Thermal Overload Relay (37–50 A)

Model / Frame: NXR‑100, designed for moderate-to-high current motor protection.

Adjustable Current Range: 37–50 A, ideal for controlling motors in this current class.

Rated Operational Voltage: Up to 690 V AC, compatible with standard industrial 50 Hz and 60 Hz systems.

Core Protection Functions:

• Thermal overload protection to guard against sustained overcurrent.

• Phase-loss protection, preventing motor damage due to missing phases.
  

Auxiliary Contacts:

• 1 x Normally Open (NO)

• 1 x Normally Closed (NC)
  

Functional Controls & Indicators:

• Temperature compensation for ambient variations

• Trip (action) indication, test/stop button

• Manual reset (automatic reset is only available on NXR‑200 and larger frames)

Mounting Options:

• Plug-in into NXC-series contactors

• Independent mounting using MB‑4 base

Standards & Compliance:

• Conforms to IEC/EN 60947‑4‑1 and IEC/EN 60947‑5‑1

• IP20 front protection rating, suitable for panel mounting

Environmental Range & Durability:

• Operational across –35 °C to +70 °C (optimal use –5 °C to +40 °C)

• Shock and vibration resistance per IEC standards