Chapter 7 Optional Accessories MS300 Non-fuse Circuit Breaker Comply with the UL standard: Per UL 508, paragraph 45.8.4, part a. The rated current of the non-fuse circuit breaker should be 1.6–2.6 times the drive’s rated input current. The recommended current values are shown in the table below. Compare the time characteristics of the non-fuse circuit breaker with those of the drive’s overheated protection to ensure that there is no tripping.
7-8 Model Voltage / One-phase (Three-phase) Breaker Rated Input Recommended Current [A] VFD1A6MS11ANSXX VFD1A6MS11ENSXX 115V / One-phase 20 VFD2A5MS11ANSXX VFD2A5MS11ENSXX 25 VFD4A8MS11ANSXX VFD4A8MS11ENSXX 50 VFD1A6MS21ANSXX VFD1A6MS21ENSXX VFD1A6MS21AFSXX 230V / One-phase 15 VFD2A8MS21ANSXX VFD2A8MS21ENSXX VFD2A8MS21AFSXX 20 VFD4A8MS21ANSXX VFD4A8MS21ENSXX VFD4A8MS21AFSXX 30 VFD7A5MS21ANSXX VFD7A5MS21ENSXX VFD7A5MS21AFSXX 45 VFD11AMS21ANSXX VFD11AMS21ENSXX VFD11AMS21AFSXX 70 VFD1A6MS23ANSXX VFD1A6MS23ENSXX 230V / Three-phase 15 VFD2A8MS23ANSXX VFD2A8MS23ENSXX 15 VFD4A8MS23ANSXX VFD4A8MS23ENSXX 15 VFD7A5MS23ANSXX VFD7A5MS23ENSXX 25 VFD11AMS23ANSXX VFD11AMS23ENSXX 40 VFD17AMS23ANSXX VFD17AMS23ENSXX 60 VFD25AMS23ANSXX VFD25AMS23ENSXX 63 VFD33AMS23ANSXX VFD33AMS23ENSXX 90 VFD49AMS23ANSXX VFD49AMS23ENSXX 125 VFD65AMS23ANSXX VFD65AMS23ENSXX 160