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1SDA074642R1 ABB XT1N 125 TMF 60A 3P UL/CSA MCCB
ABB 1SDA074642R1 is an XT1N 125 three-pole fixed moulded case circuit breaker with a 60 A TMF thermomagnetic trip unit, front terminals and a UL 489 interrupting rating of 25 kA at 480 V AC.
£282.83
Why Choose the ABB XT1N 125 TMF 1SDA074642R1 Circuit Breaker?
The ABB XT1N 125 TMF 1SDA074642R1 is a three-pole moulded case circuit breaker (MCCB) designed for dependable low-voltage power distribution protection in UL/CSA applications. Part of the ABB SACE Tmax XT1 range, it combines a compact 125 A frame with a 60 A TMF thermomagnetic trip unit for overload and short-circuit protection.
This XT1N circuit breaker is supplied in a fixed configuration with front terminals. The TMF release has a rated current of 60 A and provides thermal overload protection together with instantaneous magnetic short-circuit protection, making it a straightforward solution for feeders, distribution circuits and equipment supplies.
Designed to UL 489 requirements, the 1SDA074642R1 has an interrupting rating of 50 kA at 240 V AC, 25 kA at 480 V AC and 18 kA at 600Y/347 V AC. Its compact dimensions, front bolt terminals and proven Tmax XT construction make it suitable for industrial, commercial and OEM electrical distribution systems.
Key Advantages
- Compact ABB SACE Tmax XT1N moulded case circuit breaker.
- 60 A TMF thermomagnetic trip unit for overload and short-circuit protection.
- 25 kA interrupting rating at 480 V AC under UL 489.
- Three-pole configuration for three-phase distribution circuits.
- Rated for operation at up to 600Y/347 V AC.
- Fixed mounting with front bolt terminals for straightforward switchboard integration.
Key Features
- ABB SACE Tmax XT1N 125 moulded case circuit breaker.
- 60 A rated current (In).
- 125 A rated uninterrupted current (Iu) for the XT1 frame.
- Three-pole configuration.
- TMF thermomagnetic release.
- Thermal overload and instantaneous magnetic short-circuit protection.
- N short-circuit performance level.
- 50 kA interrupting rating at 240 V AC.
- 25 kA interrupting rating at 480 V AC.
- 18 kA interrupting rating at 600Y/347 V AC.
- Rated operational voltage of 600Y/347 V AC.
- Suitable for AC and specified DC applications.
- Fixed construction with front bolt terminals.
- UL 489 compliant configuration.
UL/CSA Thermomagnetic Circuit Protection
The TMF trip unit combines thermal overload protection with magnetic short-circuit protection in a compact and mechanically straightforward release. The thermal element responds to sustained overcurrent conditions, while the magnetic element provides rapid tripping during severe short-circuit faults. This makes the XT1N suitable for applications where robust circuit protection is required without the complexity of an electronic trip unit.
For North American installations, the 1SDA074642R1 provides documented UL 489 interrupting ratings across several system voltages, including 50 kA at 240 V AC, 25 kA at 480 V AC and 18 kA at 600Y/347 V AC. The combination of these ratings with a compact three-pole fixed design makes the breaker well suited to panelboards, switchboards, machinery and OEM distribution equipment.
Typical Applications
- Industrial low-voltage power distribution systems.
- Commercial electrical distribution panels.
- Three-phase feeder and branch circuit protection.
- Industrial machinery and equipment supplies.
- UL/CSA switchboards and control panels.
- OEM electrical equipment and panel-building applications.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| ABB product group | T-Max XT 250 Range |
| ABB order code | 1SDA074642R1 |
| Alternate catalogue number | XT1NU3060AFF000XXX |
| Product type | Moulded case circuit breaker |
| Frame / size | XT1N 125 |
| Number of poles | 3 |
| Rated current (In) | 60 A |
| Rated uninterrupted current (Iu) | 125 A |
| Trip unit | TMF thermomagnetic release |
| Release type | TM |
| Short-circuit performance level | N |
| UL 489 interrupting rating at 240 V AC | 50 kA |
| UL 489 interrupting rating at 480 V AC | 25 kA |
| UL 489 interrupting rating at 600Y/347 V AC | 18 kA |
| UL 489 DC interrupting rating at 250 V DC | 35 kA with 2 poles in series |
| Rated operational voltage | 600Y/347 V AC / 500 V DC |
| Rated voltage (Ur) | 600Y/347 V |
| Mounting | Fixed |
| Terminal connection | Front |
| Terminal type | Bolt |
| Main circuit screw | M6 |
| Tightening torque | 6 N·m |
| Busbar connection capacity | 45.5–80 mm² |
| Power loss at rated operating conditions | 3.9 W per pole |
| Electrical durability | 8,000 cycles |
| Mechanical durability | 25,000 cycles |
| Maximum electrical operating frequency | 120 cycles per hour |
| Maximum mechanical operating frequency | 240 cycles per hour |
| Dimensions (W × H × D) | 76.2 × 130 × 70 mm |
| Net weight | Approx. 1.1 kg |
| Standard | UL 489 |
| UL certification | Yes |
| CSA certification | Yes |
| EAN / UPC | 8015644785093 |
Frequently Asked Questions
What is the ABB 1SDA074642R1?
The ABB 1SDA074642R1 is an XT1N 125 three-pole moulded case circuit breaker with a 60 A TMF thermomagnetic release, fixed mounting, front terminals and UL/CSA approvals.
What is the rated current of the ABB XT1N 1SDA074642R1?
The TMF trip unit has a rated current of 60 A, while the XT1 frame has a rated uninterrupted current (Iu) of 125 A.
What is the UL interrupting rating of the ABB XT1N 125?
The 1SDA074642R1 is rated at 50 kA at 240 V AC, 25 kA at 480 V AC and 18 kA at 600Y/347 V AC according to UL 489.
What protection does the TMF trip unit provide?
The TMF thermomagnetic release provides thermal protection against sustained overloads and magnetic protection against short-circuit currents.
How is the ABB 1SDA074642R1 installed?
The circuit breaker is designed for fixed mounting and uses front bolt terminals for connection within compatible low-voltage switchboards, panels and equipment.
Trusted UL/CSA Circuit Protection from ABB
ABB SACE Tmax XT moulded case circuit breakers combine compact construction, thermomagnetic protection and certified short-circuit performance to support reliable low-voltage power distribution in industrial, commercial and OEM applications.
