Chint NJX-13FW Arc-Free Electromagnetic Relay

Contact Configuration: Four types available: 2ซี, 2ZS, 3ZS, 4ZS

Key Features: Adopts the patented technology of oxidation-free, arc-free explosion-proof current breaking, featuring oxidation resistance, zero arc discharge, and long service life. Encapsulated in a sealed transparent casing, it provides waterproof, dustproof, and corrosion-resistant performance, suitable for harsh environments such as low air pressure. Complete AC/DC voltage specifications, multiple mounting methods, various matching sockets available, and versions with indicator lights are offered.

Normal Operating Conditions: Temperature range: -25°C ~ +55°C; Relative humidity: up to 95% at +25°C; Atmospheric pressure: 86kPa ~ 106kPa; Mounting position: Any orientation

Main Parameters:

Contact Parameters: Contact material: Silver alloy. 2Z contact load: 10A/220VAC or 28VDC; 2ZS/3ZS contact load: 5A/220VAC or 28VDC; 4ZS contact load: 3A/220VAC or 28VDC. Maximum switching voltage: 250VAC/125VDC. Maximum switching power: 2200VA/280W for 2Z; 1100VA/140W for 2ZS/3ZS; 660VA/84W for 4ZS. Electrical life: 3×10⁵ operations; Mechanical life: 1×10⁷ operations.

Performance & Characteristic Parameters: Insulation resistance: 100MΩ (500VDC). Dielectric withstand voltage: 1500VAC between open contacts; 500VAC between coil-yoke and between different contact groups. Operation time & Release time: ≤25ms each.

Coil Parameters: Rated power consumption: 0.9W (ดี.ซี), 1.8VA (เครื่องปรับอากาศ). Pick-up voltage: ≤75% rated voltage (ดี.ซี), ≤80% rated voltage (เครื่องปรับอากาศ). Drop-out voltage: ≥10% rated voltage (ดี.ซี), ≥20% rated voltage (เครื่องปรับอากาศ). Maximum allowable voltage: 110% rated voltage.

ขนาด: 27.5×21.5×35.5mm

Chint NJX-13FW is an oxidation-free & arc-free electromagnetic relay. Relying on its core technologies and protective features, it is widely used in industrial automation, power systems, communication equipment, rail transit, marine and offshore engineering, harsh environment control, building ไฟฟ้า & security systems, and medical devices, especially suitable for severe working conditions such as low air pressure, ความชื้นสูง, and heavy dust.

1. Corresponding Relationship between Core Features and Applicable Scenarios

1. Detailed Application Field Analysis
2. ระบบอัตโนมัติทางอุตสาหกรรม & Control

PLC Control Systems: Used as PLC output interfaces to realize low-signal control of high-power loads (motors, solenoid valves, heaters, ฯลฯ), compatible with 2Z (10ก), 2ZS/3ZS (5ก), 4ZS (3ก) for different power requirements

Production Line Automation: Applied to logic control and signal interlocking of conveyor lines, packaging machines, printing machinery, improving equipment reliability and service life

Process Control: Serves as an actuator in closed-loop control systems for temperature, pressure, flow rate, ฯลฯ, ensuring control accuracy and stability

2. ระบบไฟฟ้า & Energy Management

Power Distribution Protection: Acts as an actuator in overload, แรงดันตก, overcurrent protection circuits to monitor and control circuit on/off status

Generator & Transformer Control: Used for start/stop control, excitation regulation, temperature protection, compatible with maximum switching voltage of 250VAC/125VDC

Photovoltaic & Wind Power Systems: Performs signal switching and protection in combiner boxes and inverters, withstanding outdoor environments and voltage fluctuations

3. Communication & Electronic Equipment

Communication Base Stations: Applied to power distribution, signal routing, and equipment protection; sealed design resists dust and moisture in outdoor/base station room environments

Data Centers: Used for server cluster power management and UPS system switching control; zero-arc feature ensures data security

Broadcasting & TV Equipment: Performs signal switching and power control of transmitters and OB vans, ensuring stable signal transmission

4. Rail Transit Systems

Train Control Circuits: Logic control of door systems, lighting systems, air conditioning regulation, and braking systems, adapting to vibration and environmental changes during train operation

Signal Systems: Control of railway signal lights, switch points, and platform screen door systems; zero-arc technology improves signal reliability

Vehicle Auxiliary Equipment: Battery management and charging system control, withstanding voltage fluctuations in vehicle electrical systems

5. Marine & Offshore Engineering

Marine Electrical Systems: Remote control of main engines, auxiliary engine control, power management of navigation equipment; sealed design resists high salt spray and humidity in marine environments

Offshore Platform Equipment: Control circuits of drilling platforms and offshore wind power equipment, adapting to low air pressure and harsh weather conditions

Marine Automation: Engine room monitoring and alarm systems (MSA), liquid level control, fire protection systems; long service life reduces maintenance frequency

6. Special Control for Harsh Environments

Mining Equipment: Control of underground ventilation, drainage, and transportation systems, withstanding low air pressure and dusty environments

Chemical & Metallurgical Industry: Pump and valve control, temperature monitoring in corrosive environments; corrosion-resistant features extend service life

Outdoor Intelligent Equipment: Street light control, environmental monitoring stations, meteorological equipment; IP6K8 protection grade ensures stable operation

7. Building Electrical & Security Systems

Building Automation: Control of central air conditioning, ventilation systems, water supply and drainage pumps; compatible with multiple contact configurations to meet different load requirements

Fire Alarm Linkage: Control of fire alarm systems, smoke exhaust fans, fire pumps; zero-arc feature enhances safety

Security Monitoring: Power management of access control systems and video surveillance equipment, ensuring 24-hour stable operation

8. Medical & Laboratory Equipment

Medical Instruments: Power switching and control of monitors, analyzers, disinfection equipment; oxidation-free feature ensures circuit purity

Laboratory Equipment: Control of precision testing instruments and environmental simulation chambers, adapting to high-precision control requirements in laboratories

III. Typical Application Examples

1. คำแนะนำในการคัดเลือก
2. Select contact configuration based on load power: 2Z for 10A loads, 2ZS/3ZS for 5A loads, 4ZS for 3A loads
3. For harsh environments, prioritize versions with indicator lights (Type B) or arc shields (Type M)
4. For DC control circuits, it is recommended to select versions with surge suppression (Type B) to protect coils and control equipment
5. For frequent switching scenarios, give priority to its advantages of 3×10⁵ electrical life and 1×10⁷ mechanical life

Selection and Replacement Comparison Manual for Chint NJX-13FW and Equivalent Relays of Mainstream Brands

1. Overview of Core Parameter Comparison (Priority Order)

1. Detailed Technical Parameter Comparison (By Category)
2. Contact System Parameters

2. Coil & Action Characteristic Parameters
   

   รายการพารามิเตอร์	Chint NJX-13FW	Schneider RXM2AB2P7	Omron LY2-DC24	Siemens 3RH2122-1BB40	Remarks
   Rated Voltage Range	เครื่องปรับอากาศ:24V~380V	เครื่องปรับอากาศ:24V~230V	เครื่องปรับอากาศ:24V~230V	เครื่องปรับอากาศ:24V~230V	Coverage range is basically consistent
   	ดี.ซี:6V~220V	ดี.ซี:6V~240V	ดี.ซี:6V~240V	ดี.ซี:6V~240V
   Pick-up Voltage	DC≤75%Un	DC≤75%Un	DC≤75%Un	DC≤75%Un	Minimal difference
   	AC≤80%Un	AC≤85%Un	AC≤85%Un	AC≤85%Un
   Drop-out Voltage	DC≥10%Un	DC≥10%Un	DC≥10%Un	DC≥10%Un	Consistent with standards
   	AC≥20%Un	AC≥20%Un	AC≥20%Un	AC≥20%Un
   Operation Time	≤25ms	≤20ms	≤20ms	≤20ms	Mainstream brands have slightly faster response
   Release Time	≤25ms	≤20ms	≤20ms	≤20ms	Mainstream brands have slightly faster response
   Surge Suppression	Optional Type B (with diode)	Built-in surge suppression	Optional with surge suppression	Built-in surge suppression	NJX-13FW is optional configuration

3. Physical & Environmental Parameters

2. Socket Compatibility
   

   Contact Configuration	Chint Matching Socket	Schneider Matching Socket	Omron Matching Socket	Cross-brand Replacement Suggestion
   2ซี (8-pin)	CZTO8A-E	RXM4AB1P7	PYF08A-E	Pin arrangement is consistent, direct replacement available
   3ZS/4ZS (14-pin)	CZTO14A-E	RXM4AB2P7	PYF14A-E	Pin arrangement is consistent, direct replacement available

   Selection and Replacement Decision Matrix (By Application Scenario)

1. Key Replacement Points and Risk Tips
2. Three Elements for Safe Replacement
3. การจับคู่พารามิเตอร์ทางไฟฟ้า: Ensure contact rated current/voltage ≥ original load, consistent coil voltage, and corresponding surge suppression configuration
4. Mechanical Dimension Compatibility: For plug-in installation, confirm pin quantity and arrangement consistency; for PCB installation, verify pad positions
5. Environmental Adaptation: For replacement in harsh environments, prioritize protection grade to avoid failures caused by insufficient sealing
6. Risk Avoidance Measures

Zero-arc application scenarios: Must select Chint NJX-13FW; no other brands have this patented technology

Explosion-proof occasions: Confirm product explosion-proof certification; only NJX-13FW has explosion-proof current breaking patent

Special installation: Top/side flange mounting is only available for NJX-13FW; no other brands offer this mounting method

1. Summary and Procurement Suggestions
2. Direct Replacement with Same Parameters: Under standard working conditions, Chint NJX-13FW is fully compatible with Schneider RXM series, Omron LY series, and Siemens 3RH series in core parameters such as contact load and coil voltage, allowing direct interchangeability
3. Differentiated Advantage Selection:

Harsh environments: Chint NJX-13FW with oxidation-free & zero-arc + IP6K8 sealing is the only choice

Standard working conditions: Imported brands (Schneider/Omron) with sufficient spare parts and high brand recognition

Cost control: Chint NJX-13FW with high cost performance and performance meeting industrial standards

3. Procurement Suggestion: For batch replacement, it is recommended to conduct small-batch tests first to verify compatibility and stability before large-scale application