INTRODUCTION

ATCB is incorporated with the advantage of both ACB and ATS. Comparing to existing Automatic
Transfer Switch (ATS), Single mechanism of ATCB is functioned to provide Trip position and withstand
Icu (Rated ultimate short-circuit breaking current) and break Icw (Rated short-time withstand current).
With an optional Protection Relay of MDTR- , ATCB functions for OCR (LTD, STD & Instantaneous), GR
and Pre-Alarm. Operating and overload current can be displayed by digital display of MDTR-III.

FEATURES

Simultaneous closing to both power sources is prevented by interlocking with single mechanism.
Both power sources can be off by neutral position.
Fixed or drawout type available
Compact size enables the space saving of switchgear (50% saving) and cost saving.
Number of switchgear can be reduced without the tie ACB panel.
By-pass application is available as option.
Compact size enables the space saving of switchgear (50% saving) and cost saving.
OCR, GR and Pre-Alarm can functioned with an optional MDTR- . Operating and overload current can
be displayed by MDTR- .