NKZ1 Series Cam Switch Rotary Changeover Switch 20A Universal Transfer
Switch
Product Description:
The NKZ1 series universal transfer switch is suitable for use in
circuits with an alternating current frequency of 50 Hz or 60 Hz
and a voltage up to 415 V AC, or a direct current voltage up to 220
V DC. This switch can be used to switch electrical control circuits
and electrical measurement instruments, such as electromagnetic
coils, electrical measuring instruments, capacitor banks, and so
on. It can also be used to directly control small-capacity
three-phase squirrel-cage induction motors.
The usage categories: AC-15,DC-13.
Meet the standard: GB/T14048.5,IEC 60947-5-1.
Product Feature:
The NKZ1 series universal transfer switch is manually operated
cam-type switch, consisting of three main parts: the contact
system, the positioning system, and the mounting system. It uses a
rear panel wiring method, which makes wiring and maintenance
convenient. The installation module integrates various installation
dimensions and is separated from the main body, making installation
and replacement easier. The contact system and positioning system
include the dust-proof design, enhancing the environmental
adaptability of the product. And the switch is characterized by
reliable overall performance, compact size, and attractive
appearance.
Product Specification:
| Technical paramenters | Model |
| NKZ1-20 |
| Rated Insulation Voltage Ui(V) | 690 |
| Rated impulse withstand voltage Uimp(kV) | 6 |
| Agreed thermal current Ith(A) | 20 |
| Rated working voltage Ue(V) | AC220/240 AC380/415 DC220 |
| Rated working current le (AC-15)(A) | 4 3 |
| Rated working current le (DC-13)(A) | 0.27 |
| Protection rating | IP20(touch points),IP40(front installation surface) |
| Wiring installation method | Rear panel wiring,screw mounting |
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 Positions: Verify that the switch contacts' open and
closed positions match the operational diagram or instructions
provided.
●Inspect Wiring: Ensure all wiring connections are correct. Test
the switch several times without power to confirm it operates as
required before putting it into actual service.
●Regular Maintenance:
1.Frequency: Perform maintenance every six months or so.
2.Cleaning: Remove any dust or debris that may have accumulated.
3.Tightening: Tighten any loose screws or fasteners.
4.Inspection: Carefully inspect the switch's exterior for any signs
of damage or wear. If the switch is severely damaged, stop using it
immediately.
By following these guidelines, you can ensure the proper
functioning and longevity of the switch.
