Hitachi Air Circuit Breakers
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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)