Description
ABB SACE TMAX T5N 400 THREE POLE CIRCUIT BREAKER (NEW OPEN BOX)
ABB
SACE TMAX
T5N 400
3-POLE CIRCUIT BREAKER
UE=690V UI=1000V UIMP=8KV
CAT.B ICW: 5KA 1S ~50-60HZ
IN = ~400 A
NR: BHB1099234
MADE IN ITALY
REF.NO: FKM2247
The ABB SACE TMAX T5N 400 is a robust three-pole moulded case circuit breaker (MCCB) rated at 400A, designed for dependable overcurrent and short-circuit protection in low-voltage distribution systems. Widely installed aboard commercial and naval vessels, this breaker safeguards critical electrical switchboards, motor feeders, and power distribution panels. Its high-performance insulation ratings (UI 1000V, UIMP 8kV) and dual-frequency compatibility (50–60 Hz) make it well suited for the demanding marine electrical environment, where reliability and safety are paramount.
Key Features
✓ Three-pole configuration rated at 400A (IN) for heavy-duty low-voltage distribution
✓ Operational voltage UE 690V with insulation voltage UI 1000V and impulse withstand UIMP 8kV
✓ Short-time withstand current ICW 5kA for 1 second (Category B), supporting selective coordination
✓ Compatible with 50 Hz and 60 Hz electrical systems for worldwide marine fleet deployment
✓ Part of the proven ABB SACE TMAX series, engineered for reliability in industrial and marine switchgear
Marine Applications
Main and emergency switchboard feeder protection aboard merchant vessels
Motor control centre (MCC) circuit protection for engine room auxiliaries
Power distribution panel protection for HVAC, lighting, and deck machinery circuits
Shore power connection panels and transformer feeder circuits
Generator output and bus-tie breaker applications in low-voltage marine networks
Why Marine Engineers Choose ABB SACE TMAX T5N 400
The ABB TMAX T5N series is a proven industry standard trusted by marine engineers worldwide for its mechanical durability, precise trip characteristics, and ease of maintenance. Its modular design allows for flexible trip unit and accessory configurations, enabling straightforward replacement and upgrade aboard vessels with minimal downtime — a critical advantage during scheduled maintenance or emergency repairs at port.
Ideal For
Bulk carriers, container ships, tankers, offshore support vessels (OSVs), passenger and cruise ships, naval vessels, ferries, LNG/LPG carriers, floating production units, and any vessel utilising ABB low-voltage switchgear and distribution systems.
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 integration support for ABB SACE TMAX circuit breakers within your vessel’s electrical system. To confirm compatibility and ensure the correct replacement or upgrade, please share nameplate photographs, part numbers (e.g., BHB1099234), wiring and single-line drawings, switchboard model and version details, vessel name and IMO number, and project scope. All technical matches and compatibility claims are subject to confirmation based on the information provided.
