Description
ABB SACE LN320 CIRCUIT BREAKER (NEW OPEN BOX)
ABB SACE
LN320
CIRCUIT BREAKER
IN = 320A UE = 690V
CAT. A
AUX.10A 380A A.C.
ICU 50-60HZ
ICS = 100% ICU
IEC 947-2
CEI EN 60947-2
NR.: AM72001746
REF.NO: FKM4003
The ABB SACE LN320 is a robust moulded case circuit breaker (MCCB) rated at 320A and 690V, designed for reliable overcurrent protection and circuit isolation in demanding industrial and marine electrical distribution systems. Manufactured by ABB — a globally recognised leader in power protection — this breaker is engineered for switchboard and power panel installations aboard vessels where dependable circuit protection is critical for operational safety and regulatory compliance.
Key Features
✓ Rated current of 320A with a maximum operating voltage of 690V, suitable for heavy-duty marine power distribution
✓ Category A performance with ICS = 100% ICU, ensuring full short-circuit breaking capacity under service conditions
✓ Compliant with IEC 947-2 and CEI EN 60947-2 international standards for low-voltage switchgear
✓ Auxiliary contacts rated at 10A / 380V AC for remote signalling and control integration
✓ Dual frequency capability (50–60Hz) for worldwide marine and industrial power systems
Marine Applications
Main and emergency switchboard circuit protection on commercial and offshore vessels
Generator output and bus-tie breaker protection in engine room power distribution panels
Shore power connection and transformer feeder circuit isolation
Motor control centre (MCC) protection for large auxiliary machinery and pump systems
Essential and non-essential load group distribution in compliance with classification society requirements
Why Marine Engineers Choose
ABB SACE circuit breakers are trusted across global fleets for their proven reliability, ease of maintenance, and compliance with international marine electrical standards. The LN320 delivers full-rated breaking capacity under service conditions, minimising risk during fault events and supporting uninterrupted vessel operations.
Ideal For
Bulk carriers, container ships, tankers, offshore supply vessels (OSVs), platform supply vessels (PSVs), passenger ferries, naval auxiliaries, floating production units (FPSOs), and any vessel or offshore installation utilising ABB SACE series low-voltage switchgear.
Technical Support & Compliance
We provide complete support solutions including remote troubleshooting, onboard technical assistance, testing and commissioning, repair services, retrofit and upgrade programmes, and full system integration support. To confirm compatibility and ensure the correct replacement unit, please share nameplate photographs, existing part numbers, electrical drawings, switchboard model and version details, vessel name and IMO number, and scope of work. All compatibility and technical details are subject to confirmation based on the information provided.
