Panel Mounting NF1 Series Load Switch 3P 3P+N Disconnector IP20
IP65 Isolation Switch
Product Description:
The NF1 load switch is suitable for use in alternating current (AC)
circuits operating at 50 Hz or 60 Hz, with voltages up to 690 V. It
is widely used in distribution systems and automation systems
across various industries including construction, power generation,
petrochemicals, and others. Primarily, it serves as the main switch
for machine tools, fans, and pump motors, and can also function as
a start-stop switch for smaller capacity motors. Due to its
isolation capability, the load switch can be used as an isolating
switch that creates a clear disconnection point between
de-energized and energized parts of the circuit, enabling the
isolation of faulty equipment or facilitating maintenance work
under power-off conditions.
Usage categories: AC-23A,AC-22A.
Meet the standards: GB/T14048.3,IEC 60947-3.
Product Feature:
●Modular Design: The switch is designed to be modular, allowing for
flexible and diverse combinations.
●Spring Energy Storage Operating Mechanism: The operating mechanism
uses spring energy storage, which ensures that the connection and
disconnection speeds of the product are independent of the speed of
the operating handle. This guarantees the product's ability to
connect and disconnect reliably.
●Double-Break Point Bridge Structure: The contact system uses a
double-break point bridge structure, which enhances the performance
and durability of the switch.
●Wiring Method: The wiring is done using a clamping frame design,
ensuring secure connections.
●Installation Methods: The switch can be installed by
front-mounting (screw mounting, DIN rail mounting) and
rear-mounting.
●Housing Material: The housing is made of glass fiber-reinforced
plastic, which provides excellent dielectric properties and high
protective capability, contributing to high operational safety.
Product Specification:
| Technical paramenters | Model |
| NF1-32 | NF1-40 |
| Rated Insulation Voltage Ui(V) | 800 |
| Rated impulse withstand voltage Uimp(kV) | 6 |
| Poles | 3P, 3P+N |
| Agreed thermal current Ith(A) | 32 | 40 |
| Rated working voltage Ue(V) | AC220/240 | AC380/415 | AC660/690 | AC220/240 | AC380/415 | AC660/690 |
| Rated working current le(AC-22A) A | 32 | 32 | 32 | 40 | 40 | 40 |
| Rated working current le(AC-23A) A | 32 | 32 | 16 | 40 | 40 | 25 |
| Protection rating | IP20,IP65(with protective cover) |
| Wiring installation method | front panel wiring,screw or DIN rail mounting;rear panel
wiring,screw mounting |
| Accessories | protection hood for terminal connections,hang lock,cable waterproof
connector |
Operating Conditions and Environmental Suitability:
●Ambient temperature is -5℃~+40°C, the average temperature during
24 hours couldn't exceed +35°C.
●Altitude: ≤2000m.
●Atmosphere condition:
1.Humidity: Relative humidity of the atmosphere couldn't exceed 50%
when the highest temperature is +40°C; much higher relative
humidity is allowable under the condition of lower temperature, for
example, when the temperature reaches +20°C, the relative humidity
is up to 90%, taking into account the condensation that may occur
on the product surfaces due to temperature changes.
2.Pollution grade: 3.
●Installation category: III.
Usage and Maintenance:
●Check Switch Flexibility and Reliability: Before installing the
switch, make sure that it operates smoothly and reliably. Test the
switch to ensure that it moves freely and performs as expected.
●Periodic Cleaning and Inspection: The switch should be cleaned and
inspected regularly, ideally every three months. During this
maintenance, check for any worn parts and ensure that all fasteners
are secure. This will help maintain the safety and reliability of
the switch.
●Timely Replacement: When the switch reaches the end of its service
life, it should be promptly replaced with a new one to prevent
potential safety issues. Monitoring the condition of the switch and
replacing it when necessary is crucial for maintaining safe and
efficient operation.
By following these guidelines, you can ensure the proper
functioning and longevity of the switch.
