Schneider Electric LV540552 EasyPact CVS400N 3P 320 A 50 kA MA Fixed Moulded Case Circuit Breaker

The Schneider Electric LV540552 is a 3-pole EasyPact CVS400N moulded case circuit breaker rated 320 A with a 50 kA breaking capacity (Icu) at 380/415 V AC. It uses a magnetic-only MA trip unit for short-circuit protection, the standard configuration for motor-circuit applications that pair it with a separate thermal overload relay. The breaker is fixed-mounted and carries IP40 front-face ingress protection.

Technical Specifications

Certifications & Standards

• IEC
• GOST
• EN 60947-2
• IEC 60947-2

Selection Notes

The MA trip unit on the CVS400N fires on short-circuit current only - it carries no adjustable thermal overload curve - so this breaker is the motor-circuit configuration: pair it with a separate thermal overload relay or motor circuit protector to cover running overload, and let this breaker clear fault current with its 6...13x In (adjustable) instantaneous pick-up. Choose it over the TM-D or ETS versions of the same CVS400 frame when overload protection already sits elsewhere in the motor starter.