Yueqing Yijin Electronics Co., Ltd.
Isolating Switch
HK18 series knife switch for photovoltaic applications
Product IntroductionWIFI intelligent reclosing protector is suitable for remote control and multi person control in AC 50HZ and rated 220V power lines. It can be set to turn on and off according to Beijing time and is suitable for remote intelligent control of electrical equipment in various environments, such as homes, schools, enterprises, municipal engineering,…
Scope application
The HK18 series photovoltaic knife switch is suitable for control circuits with AC 50Hz, rated voltage up to 400V and below, and rated impulse withstand voltage of 6kV. It can be used for infrequent manual connection and disconnection circuits and isolation circuits in household appliances and industrial distribution systems, greatly improving personal safety protection performance and preventing accidental electric shock.
This product complies with GB/T14048.3 and IEC60947-3 standards.
Model Meaning
Normal working conditions
1. The ambient air temperature shall not exceed+70 ℃, not be lower than -25 ℃, and the average temperature value within 24 hours shall not exceed+35 ℃.
2. The altitude of the installation site shall not exceed 2000m.
3. Humidity: When the maximum temperature is+60 ℃, the relative humidity of the air should not exceed 95%. Special measures should be taken for occasional condensation caused by temperature changes.
4. The surrounding environmental pollution level is level 3.
5. The switch should be installed in a place without significant shaking, impact vibration, and no rain or snow invasion. At the same time, the installation location should be free of explosive hazardous media, and there should be no gas or dust in the media that can corrode metals and damage insulation.
Product advantages and features
1. Solved the problem of inconvenient installation of traditional knife switches, with two installation methods available: guide rails and base plates.
2. Solved the problem of traditional knife switch opening and wiring, this model can be wired without opening the cover.
3. Solved the problem of small volume and large current, and increased the current from 63A to 125A, with a temperature rise 15 degrees lower than the standard.
4. Thickened all copper parts, added fastening ring design, tight contact without looseness
5. Using internal hexagonal screws, the torque is increased by more than twice to enhance the tightness.
Main technical parameters
| model | HK18-125/4 (or/2,/3) |
| specifications | 2P, 3P, 4P |
| rated operational voltage | 400V |
| rated working current | 63A, 80A, 100A, 125A |
| Rated working frequency | 50Hz |
| rated impulse withstand voltage | 6kV |
| Utilization category | AC-20B |
| Rated short-time withstand current Icw (kA) | one point eight nine |
| Rated short-circuit making capacity Icm (kA) | two point six nine |
| Mechanical lifespan (times) | ten thousand |
| Electrical lifespan (times) | one thousand and five hundred |
Usage and maintenance
Before installation, check whether the switch is intact and operates flexibly;
The working conditions should comply with the regulations of normal working conditions;
Switches should be regularly maintained and adjusted to remove dirt, maintain cleanliness, and ensure that the contacts work in good contact condition;
Product appearance and wiring diagram
HK18-125/2 2P
HK18-125/3 3P
HK18-125/4 4P
Ordering Instructions
The ordering unit must specify the form and characteristics of the switch, voltage level, current level, number of poles, operation mode and quantity, etc. For special orders, please consult our technical department.
For example: HK18-125/3, 3P, 125A 500 units;
500 units of HK18-125/4, 4P, and 125A.
