Page 28 - SACE Tmax XT - Catalogue

2/10 SACE TMAX XT LOW VOLTAGE MOLDED CASE CIRCUIT-BREAKERS

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SACE Tmax XT automatic circuit-breakers for

direct current (DC) distribution

Size XT1 XT2 XT3
Rated uninterrupted current [A] 160 160 250
Poles [No.] 3, 4 3, 4 3, 4
Rated service voltage, Ue (DC) [V] 500 500 500
Rated insulation voltage, Ui (DC) [V] 800 1000 800
Rated impulse withstand voltage, Uimp [kV] 8 8 8
Versions Fixed, Plug-in (2) Fixed, Withdrawable, Plug-in Fixed, Plug-in
Breaking capacities according to IEC 60947-2 B C N S H N S H L V N S
Rated ultimate short-circuit breaking capacity, Icu
Icu @ 250V (DC) 2-pole in series [kA] 18 25 36 50 70 36 50 70 85 100 36 50
Icu @ 500V (DC) 2-pole in series [kA] – – – – – – – – – – – –
Icu @ 500V (DC) 3-pole in series (1) [kA] 18 25 36 50 70 36 50 70 85 100 36 50
Icu @ 750V (DC) 3-pole in series [kA] – – – – – – – – – – – –
Rated service short-circuit breaking capacity, Ics
Ics @ 250V (DC) 2-pole in series [kA] 100% 100% 100% 100% 75% 100% 100% 100% 100% 100% 100% 75%
Ics @ 500V (DC) 2-pole in series [kA] – – – – – – – – – – – –
Ics @ 500V (DC) 3-pole in series (1) [kA] 100% 100% 100% 100% 75% 100% 100% 100% 100% 100% 100% 75%
Ics @ 750V (DC) 3-pole in series [kA] – – – – – – – – – – – –
Utilization Category (IEC 60947-2) A A A
Reference Standard IEC 60947-2 IEC 60947-2 IEC 60947-2
Insulation behaviour   
Mounted on DIN rail DIN EN 50022 DIN EN 50022 DIN EN 50022
Mechanical life [No. Operations] 25,000 25,000 25,000
[No. Hourly operations] 240 240 240
Dimensions
Fixed 3 poles [mm] 76.2 x 70 x 130 90 x 82.5 x 130 105 x 70 x 150
(Width x Depth x Height) 4 poles [mm] 101.6 x 70 x 130 120 x 82.5 x 130 140 x 70 x 150
Trip units for power distribution
TMD/TMA 
TMD/TMF  
MF/MA  
Trip units with low magnetic (TMG)
TMG  
Interchangeable trip units 
Weight
Fixed 3/4 poles [kg] 1.1 / 1.4 1.2 / 1.6 1.7 / 2.1
Plug in (EF terminals) 3/4 poles [kg] 2.21 / 2.82 2.54 / 3.27 3.24 / 4.1
Withdrawable (EF terminals) 3/4 poles [kg] 3.32 / 4.04
(1) XT1: a 4 poles in series connection is required to be used in 500 V DC installations. (2) XT1 plug-in In max=125A