| Type |  | HV 031 (heater only) | 
|  | 
| Heating element |  | Resistance type cartridge heater | 
|  | 
| Overheat protection |  | Built-in temperature limiter | 
|  | 
| Heat sink |  | Die-cast aluminum, glass bead finish | 
|  | 
| Air exit temperature |  | Approx. 118°F (48°C) measured 2" (50 mm) above heater | 
|  | 
| Connection (heater) |  | 3-pole terminal, AWG 14 max. (2.5 mm2) | 
|  | 
| Connection (axial fan) |  | 2-pole terminal (L2/N2), AWG 14 max. (2.5 mm²) | 
|  | 
| Wiring compartment |  | Plastic, UL 94V-0, black | 
|  | 
| Mounting |  | Clip for 35 mm DIN rail (EN 60 715) | 
|  | 
| Weight |  | 1.1 lb (490 g) | 
|  | 
| Operating/storage temperature |  | -49 to 158ºF (-45 to 70ºC) | 
|  | 
| Protection type |  | IP20 | 
|  | 
| Protection class |  | I (grounded) |