Chint NXR Thermal Overload Relay (30–40 A)

Model / Frame: NXR-100, designed for medium-to-high current overload protection.

Adjustable Current Range: 30 A to 40 A, allowing tailored protection for motors within this rating.

Rated Operational Voltage: Up to 690 VAC, suitable for standard three-phase industrial systems (50 Hz/60 Hz).

Protection Functions:

• Thermal overload protection to guard against prolonged overcurrent conditions.

• Phase-loss protection to safely detect and respond to single-phase operation.

Control & Indicator Features:
Includes temperature compensation, trip (action) indication, Test/Stop button, and manual/automatic reset options.

Auxiliary Contacts:

• 1 × Normally Open (NO)

• 1 × Normally Closed (NC)

Mounting Options:

• Plug-in capable—designed to plug into compatible Chint NXC series contactors.

• Also supports standalone mounting via the MB-4 base.

Standards & Compliance:

• Conforms to IEC/EN 60947-4-1 and IEC/EN 60947-5-1 for industrial motor control safety.

• IP20-rated front enclosure for finger-safe protection.

Environmental & Durability Ratings:

• Operating ambient temperature: –35 °C to +70 °C (normal range: –5 °C to +40 °C)

• Resistant to shock and vibration according to IEC 60068-2 standards.
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