RK8510:
Power: 400W
Voltage: 0-150V
Current: 0-40A
RK8510A:
Power: 200W
Voltage: 0-150V
Current: 0-20A
RK8510B:
Power:400W
Voltage:0-500V
Current:0-15A
RK8510C:
Power:200W
Voltage:0-500V
Current:0-15A
RK8510D (dual channel):
Power: 200W * 2CH
Voltage: 0-150V
Current: 0-20A