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ABB · SACE Tmax XT
1SDA074744R1 is the ABB XT2N 125 TMA 100-500..1000 3p F F UL/CSA molded case circuit breaker: 3 poles, In = 100 A with a TMA thermal-magnetic adjustable trip unit, and fixed front (bolt-connected) terminals. It is used in UL489 panel feeders and distribution circuits where the installed unit is matched to the original catalog number.
| Electrical | |
| Frame / family | SACE Tmax XT, XT2N 125 (125 A frame), UL/CSA version |
|---|---|
| Rated current In | 100 A (TMA overload setting 70...100 A) |
| Instantaneous setting Ii | 500...1000 A |
| Rated operational voltage Ue | 600 V AC / 500 V DC |
| Rated insulation voltage Ui | 1000 V |
| Rated impulse withstand Uimp | 8 kV |
| Breaking capacity Icu (UL489, AC) | 65 kA @ 240 V AC; 25 kA @ 480 V AC; 18 kA @ 600 V AC |
| Breaking capacity (UL489, DC) | 35 kA @ 250 V DC (2 poles in series); 35 kA @ 500 V DC (3 poles in series) |
| Short-circuit performance class | N (IEC 60947-2: 36 kA @ 415 V AC) |
| Trip unit | TMA thermal-magnetic, adjustable |
| Number of poles | 3 (3P) |
| Mechanical | |
| Terminals | Fixed front terminals (F F), bolt connection, M6, tightening torque 6 N·m |
| Dimensions / weight | 90 × 130 × 82.5 mm (W × H × D); 1.1 kg net |
| Compliance | |
| Standards | UL489 Listed, CSA certified (UL/CSA version); CE per EC Declaration of Conformity Tmax XT2 |
| Enclosure rating | IP20 |
Values follow the ABB SACE Tmax XT UL/CSA catalog for catalog number 1SDA074744R1 (XT2N 125 TMA 100-500..1000 3p F F UL/CSA). This breaker has no communication ports. Parameters not confirmed for this variant are omitted rather than estimated.
The 1SDA074744R1 is a UL489 molded case circuit breaker for feeder and branch protection at up to 600 V AC / 500 V DC, with an 18 kA (600 V AC) UL489 interrupting rating. Lugs and terminal accessories are sized to the bolt-type fixed front terminals, and the trip settings (70...100 A overload, 500...1000 A instantaneous) are coordinated with the downstream conductors, not to a generic assumption.
Record the catalog number and revision from the nameplate of the installed unit before specifying a like-for-like spare.
Q.What supply does this device require?
It is rated for 600 V AC / 500 V DC operational voltage (Ui 1000 V). Size the installation to the same ratings shown in the Specifications table.
Q.What are the key electrical ratings?
In = 100 A (TMA, 70...100 A adjustable), Ii = 500...1000 A, 3 poles, UL489 Icu 65 kA @ 240 V AC / 25 kA @ 480 V AC / 18 kA @ 600 V AC. Cross-check them against the installed unit's nameplate.
Q.How is this device mounted?
Fixed mounting with bolt-type front terminals (F F). It is not a 35 mm DIN-rail MCB; plan the panel or plate mounting space for the 90 × 130 × 82.5 mm body.
Q.Does this breaker have communication ports?
No. The TMA thermal-magnetic version has no communication capability; communication accessories apply to electronic-trip XT2 variants, not this catalog number.
Q.What replaces a unit that is no longer in production?
For a like-for-like spare, record the catalog number and revision from the nameplate; a current-production equivalent is identified by matching function and ratings.
ABB catalog entry for 1SDA074744R1 identifies the XT2N 125 frame, 100 A TMA trip and three-pole UL/CSA configuration.
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Every product is covered by a 12-month seller warranty provided by SHLY-PLC, effective from the date of delivery, against defects in materials and workmanship under normal use.
This warranty does not cover damage from misuse, improper installation, power surges, neglect, unauthorized repair, or normal wear and tear. See our Return Policy for warranty-claim instructions.
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