63 | 106 
Sparkovers types: 
 
 
 
 
PHASE
2807586
150VAC SURGE 
PROTECTION VARISTOR
Ground Ground
B240
PHASE
PHASE
PHASE
PHASE
2798844
275VAC SURGE 
PROTECTION VARISTOR
Ground Ground
M208
NEUTRAL
NEUTRAL
PHASE
2817990
260VAC SURGE 
PROTECTION SPARKLER
 
 
 
Never open the device: there is a risk of electric shock. If necessary, contact Hitachi 
Service. 
 
Before Connecting the Machine to the AC Mains, one must ensure that the grid 
Voltage meets the equipment’s settings.  
 
Never expose the equipment to rain, moisture or direct sunlight, in order to avoiding risk of 
fire or electric shock. 
 
 
 
2798844 – 275VAC SURGE PROTECTION VARISTOR 
2817990 – 260VAC SURGE PROTECTION SPARKLER 
2807586 – 150VAC SURGE PROTECTION VARISTOR 
About AC MAINS TYPE, see Section 8 – 
Attachments, USA AC Mains Types for E-
Compact Series.