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NJX3

NJX3

The CHINT NJX3 Series Miniature Relays are compact, high-reliability relays designed for industrial automation and HVAC systems. Featuring 1Z, 2Z, and 3Z contact configurations, the NJX3 series offers high load capacity, low power consumption, and quick-connect terminals for easy wiring. Certified by UL and CE, these relays deliver dependable performance for controlling compressors, condensers, and air-conditioning equipment in harsh environments.

Product Information

Overview
Catalog

Standards Compliance: IEC/EN 60947-5-1, UL, CE certified
Contact Forms: 1Z, 2Z, 3Z (single, double, and triple changeover contacts)
Contact Material: Silver alloy
Rated Load (Resistive):
- 277 VAC / 15 A
- 28 VDC / 10 A
Horsepower Rating:
- 230 VAC / 1 HP
- 600 VAC / 6.8 A (general purpose)
Electrical Life:
- 100,000 operations (resistive load)
- 6,000 operations (motor load)
Mechanical Life: 2 million operations
Initial Contact Resistance: ≤ 100 mΩ
Insulation Resistance: ≥ 1,000 MΩ (at 500 VDC)
Dielectric Strength:
- Between Coil & Contact: 2,200 VAC
- Between Open Contacts: 800 VAC
Operate Time (at 25 °C): ≤ 15 ms
Release Time (at 25 °C): ≤ 15 ms
Shock Resistance: 100 m/s² (11 ms pulse)
Vibration Resistance: 10–55 Hz, 1 mm double amplitude
Pull-In Voltage: ≤ 85% of rated voltage
Release Voltage: ≥ 20% of rated voltage
Peak Voltage: ≤ 110% of rated voltage
Rated Coil Voltage: AC 24 V (standard), other options available on request
Coil Resistance: 42 Ω ±10% (at 25 °C)
Ambient Temperature Range: −45 °C to +65 °C
Relative Humidity: Up to 95% at +25 °C
Mounting Type: Quick-connect terminals (no socket required)
Installation Orientation: Any position
Protection Degree: IP20 (open type)
Overall Dimensions: 64.3 × 34.5 × 57.2 mm
Typical Applications:
- HVAC and refrigeration control
- Compressors and condensers
- Industrial equipment automation
- Power distribution systems

Name

Size

Release time

Operate

NJX3-MINIATURE-ELECTROMAGNETIC-RELAY-Catalog.pdf

308.63KB

2025-12-18

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FAQs

What is the main function of the NJX3 Miniature Relay?

The NJX3 relay provides compact, reliable control switching for HVAC and industrial systems, ensuring stable performance under high load and temperature conditions.

What makes the NJX3 ideal for HVAC applications?

It’s designed for compressor and condenser control, featuring high current handling (up to 15 A) and quick-connect terminals for easy installation in HVAC systems.

What are the available contact forms?

Three versions are available: 1Z (single), 2Z (double), and 3Z (triple) changeover contacts, suitable for different circuit designs.

Can the NJX3 operate in harsh environments?

Yes. It operates reliably between −45 °C and +65 °C, with high humidity tolerance (up to 95%), making it suitable for industrial and outdoor environments.

How does it differ from traditional relays?

Unlike larger relays, the NJX3 features a miniature footprint and no-socket quick wiring design, offering flexible, space-saving installation and reduced maintenance time.