| Series | Product Image | Protection class | Max power | Special Versions | Resistance Value | PDF | Supplier |
| RFK |
 | IP55 | 250W .. 800W | Not-inductive, customized cables, UL version available on request | - |  |  |
| RFD |
 | IP54 | 50W .. 550W | Not-inductive, special insulation, thermal switch, heat-sink, special cables | -- |  |  |
| RFH |
 | IP55 | 1000W .. 2000W | Not-inductive, Thermal switch, Customized cable | |  |  |
| RAF |
 | IP54 | 700W .. 1100W | Thermal switch, Customized cable | |  |  |
| RDF |
 | IP54 | 750W .. 1500W | Thermal switch, Customized cable | |  |  |
| RFZC |
 | IP54 | 85W .. 280W | Thermal switch, Customized cable | |  |  |
| RFZ |
 | IP54 | 80W .. 300W | Thermal switch, Customized cable | |  |  |
| HS |
 | - | 10W .. 150W | Special high pulse versions available | R005 .. 100K |  |  |
| HSW |
 | - | 600W | Dissipates 600W with water flowing (2L /min) | R1 .. 30K |  |  |