Chint NXR Thermal Overload Relay (1–1.6 A)

Model / Frame: NXR‑25 (Thermal Overload Relay)

Adjustable Current Setting Range: 1 A to 1.6 A — ideal for precise protection of low-current three-phase motors

Rated Operational Voltage: Up to 690 V AC, capable of handling both 50 Hz and 60 Hz networks

Motor Protection Features:

• Thermal overload protection

• Phase‑loss (single-phase) protection

• Provides essential safeguards against motor damage

Functional Features:

• Temperature compensation for consistent performance across varying ambient temperatures

• Trip indication for fault visibility

• Stop/Test control for quick check and manual control

• Selective reset: may include manual and/or automatic reset depending on variant

Auxiliary Contacts: One Normally Open (NO) and one Normally Closed (NC) contact for signaling or interlock use

Mounting Options:

• Plug-in directly onto compatible contactor units (e.g., Chint NXC)

• Independent installation via an optional MB‑2 mounting base

Standards & Ratings:

• Compliant with IEC/EN 60947‑4‑1 and IEC/EN 60947‑5‑1

• IP20-rated enclosure

• Built for reliable operation within –35 °C to +70 °C ambient range, with normal expected range –5 °C to +40 °C

Trip Behavior:

• Reliable operation and interruption times under overload conditions, with performance guided by IEC trip curves (e.g., tripping at 1.2× to 1.5× rated current depending on thermal state)