Hitachi Air Circuit Breakers

Compact & Modular design

• More compact overall dimensions and light weights.
• HITACHI ACB have been made three types of modular design creteria to facilitate their installation and integration in low voltage switch boards.

High breaking capacity

• HITACHI ACB provides high breaking capacity up to 100kA

Safety and Convenience

• OCR terminals are located in front
• Modulized mechanical part and accessories
• for easy maintenance and inspection Improved draw-out rail for easy draw-out
• Minimized arc space
• Molded frame

High functional digital type trip relay

• Easy inspection by LCD
• Load current value
• Setting values of each trip characteristics
• Fault current(Max) value
• Tripping time
• Self-diagnosis function-noEr : No error
• Err-1 : NoMTD coil
• Err-2 : Program error
• Err-4 : Configuration resister error
• Err-8 : Watch dog error
• Self-test function
• It is available to check whether OCR is operated normally or not by applying external power
• Pre-alarm function
• Contact output of the each tripping cause and LED indication
• OCR alarm contact (AL,2a)