ABB

SACE

Moulded Case Circuit Breaker (MCCB)

Tmax XT (UL/CSA)

XT4N complete breakers

Moulded / Molded Case Circuit Breaker (MCCB)

4-poles (4P4d)

50A (250 oversized frame)

50 AT

250 AF

600Vdc

600Vac

8 kV

Ring-lug or bar connections

65kA (240Vac; UL489)
25kA (480Vac; UL489)
18kA (600Vac; UL489)

Thermal-Magnetic (fixed)
TMF
Display = none

Thermal protection (Overload)
Magnetic protection (Short-circuit)

Over-current -- fixed at 50A
Short-circuit pickup current -- fixed at 500A

Toggle

H160mm x W140mm x D82.5mm

25000 operations

XT4N 250 TMF 50-500 4p F F UL/CSA
XT4NU4050AFF000XXX

Commercialized

XT4NU4050AFF000XXX
XT4N250TMF505004pFFULCSA

8015644791520

39121616

888614406902

UL 489
CSA C22.2
EC directive "Low Voltage Directive" (LVD) no. 2014/35/EC
EC directive "Electromagnetic Compatibility Directive" (EMC) 2014/30/EC
Lloyd's Register of Shipping (LR)
Germanischer Lloyd (GL)
Bureau Veritas (BV)
Registro Italiano Navale (RINA)
Det Norske Veritas (DNV)
Russian Maritime Register of Shipping (RMRS)
American Bureau of Shipping (ABS)
Nippon Kaiji Kyokai (NKK)
CCC (China)
KC (Korea)
JIS (Japan)
GOST/EAC (Russia)

Maximum flexibility for every application - SACE Tmax XT sets standards for electrical installations.
- Easy selection -- one-fits-all accessories and intuitive design pave the way for fast upgrades and create values through the entire customer journey even for the most critical projects.

Ease of selection
- The clever organization of the SACE Tmax XT range and the user-friendly software e-Configure allows the customer to easily select and customize the right products for their needs.

One-fits-all accessories
- Improving the circuit breaker from its basic functions to a more versatile and sophisticated device is made possible thanks to the SACE Tmax XT modular structure and the variety of available accessories.

Upgradability
- The Ekip Touch and Hi-Touch trip units can always be upgraded via ABB Ability MarketplaceTM and new functionalities shall be always available for an ever ending future.

Continuity of service and equipment protection
- SACE Tmax XT sets standards when extreme breaking capacity is needed.
- Sharing the same logics interfaces and features regardless of operating voltage environmental conditions. Embedding the most advanced protections into the smallest of frames.

Electrical performance
- SACE Tmax XT is designed and tested to meet any installation requirement even the most critical ones.

Metering
- SACE Tmax XT provides all the tools needed to set up a competent and effective energy management strategy thanks to the trip units able to measure electrical parameters with 1% accuracy certification.

Protections and logics
- SACE Tmax XT integrates extra functionalities into the size of a standard molded case circuit breaker.
- The most advanced protection functions and logics are available thanks to its cutting-edge trip units.