Chint NXR Thermal Overload Relay (100–200 A)

Model / Frame: NXR‑200 — a robust thermal overload relay designed for protecting mid-to-high current motors.

Adjustable Current Range: 100 A – 200 A, providing flexible protection for heavier motor applications.

Rated Operating Voltage: Up to 690 VAC (both 50 Hz and 60 Hz), suitable for a wide range of AC systems.

Protection Functions:

• Thermal overload protection to guard against sustained overcurrent.

• Phase-loss protection to prevent damage from single-phase operation or motor imbalance.

Auxiliary Contacts:

• 1 × Normally Open (NO)

• 1 × Normally Closed (NC) — ideal for use in control circuits or interlocking mechanisms.

Control Features:

• Indication of trip status (action indication).

• Temperature compensation for reliable operation in varying environmental conditions.

• Test / Stop button functionality.

• Manual reset only for this frame type — (NXR‑200 and higher models do not offer automatic reset).

Mounting Options:

• Standalone (independent) mounting using the MB‑4 base — plug-in design with robust mechanical integration.

Standards & Certifications:

• Built to IEC/EN 60947‑4‑1 and IEC/EN 60947‑5‑1 standards for industrial electrical control safety.

• Certified with CE marks; equipped with IP20 protection (finger-safe rating for front exposure).

Environmental & Durability Ratings:

• Operating Ambient Temperature: –35 °C to +70 °C (recommended use between –5 °C and +40 °C).

• Built to withstand shock and vibration per IEC 60068‑2‑7 (shock) and IEC 60068‑2‑6 (vibration) standards.