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NKG4

NKG4

The CHINT NKG4 Time Switch provides precise control of electrical circuits through programmable timing functions. It supports automatic ON/OFF switching of lighting, heating, and motor systems according to pre-set schedules. Featuring a digital LCD display, manual override, and high switching accuracy, the NKG4 is ideal for industrial automation, building management, and energy-saving applications. Its modular DIN-rail design allows easy integration into control panels while maintaining reliable performance and safety.

Product Information

Product type: Digital / mechanical Time Switch
Standards compliance: IEC/EN 60730-2-7
Rated control supply voltage (Us): AC 230 V, 50/60 Hz
Contact configuration: 1 changeover contact (SPDT)
Rated insulation voltage (Ui): 250 V
Rated current (Ie): 16 A (resistive load)
Rated operational voltage (Ue): 230 V AC
Contact material: Silver alloy
Switching capacity: 16 A / 250 V AC (resistive load), 10 A / 250 V AC (inductive load, cos φ = 0.6)
Minimum switching load: 100 mA / 12 V DC
Power reserve: Built-in lithium battery (≥ 3 years reserve time)
Programming type: Daily or weekly programmable cycles
Display: Digital LCD screen for real-time clock and program preview
Accuracy: ±1 second/day at 20 °C
Manual control options: ON / AUTO / OFF mode selection
Operation modes:
- Automatic ON/OFF timing
- Manual override
- Holiday and special-day settings
Number of programs: Up to 16 ON/OFF operations per day
Backup battery: Retains time and program memory during power outages
Mounting type: 35 mm DIN rail
Terminal capacity: 2 × 2.5 mm² or 1 × 4 mm²
Operating temperature: −10 °C to +50 °C
Storage temperature: −20 °C to +70 °C
Relative humidity: ≤ 95% (non-condensing)
Protection degree: IP20 (front), IP40 (housing)
Housing material: Flame-retardant polyamide (PA66)
Dimensions: 86 × 36 × 65 mm
Net weight: Approx. 200 g
Installation category: II
Pollution degree: 2
Altitude limit: ≤ 2000 m
Electrical life: ≥ 100,000 operations
Mechanical life: ≥ 1,000,000 operations
Mounting position: Vertical or horizontal

Name

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Release time

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NKG4-B catalogue.pdf

758.55KB

2024-10-15

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2311-NKG4-B-Time Switch-Manual.pdf

433.39KB

2024-10-15

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2311-NKG4-B-Time Switch-CE Declaration Certificate.pdf

1.91MB

2024-10-15

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Name

Size

Release time

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NKG4-B-Time Switch-Drawings.stp

4.73MB

2025-03-25

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FAQs

What is the primary function of the NKG4 Time Switch?

It automates the ON/OFF operation of electrical loads such as lights, motors, or HVAC systems according to pre-set schedules.

Can it continue operating during power outages?

Yes. It has a long-life lithium battery backup that retains time and programming data for up to 3 years.

What installation method is used?

The NKG4 is designed for DIN-rail mounting, making it compatible with standard industrial control panels.

What is the maximum load capacity?

It supports up to 16 A / 250 V AC resistive load, suitable for lighting and motor control.

What industries commonly use the NKG4?

It is widely applied in industrial automation, building lighting control, HVAC systems, and energy management solutions.