Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA074742R1 ABB XT2N 125 TMA 80-400..800 3-Pole UL/CSA Circuit Breaker
ABB 1SDA074742R1 XT2N 125 is a fixed three-pole 80 A moulded case circuit breaker with front terminals, a TMA adjustable thermal-magnetic release, a 56–80 A overload adjustment range and a 400–800 A instantaneous magnetic trip range for UL/CSA applications.
£276.56
Why Choose the ABB 1SDA074742R1 XT2N 125 TMA 80-400..800 3-Pole Circuit Breaker?
The ABB 1SDA074742R1, designated XT2N 125 TMA 80-400..800 3p F F UL/CSA, is a fixed three-pole moulded case circuit breaker (MCCB) from the ABB SACE Tmax XT range. Built on the XT2N 125 frame, it has a rated current of 80 A and uses a TMA thermal-magnetic release for dependable overload and short-circuit protection.
The TMA trip unit provides adjustable thermal overload protection together with adjustable instantaneous magnetic short-circuit protection. For this model, the overload setting range is 56–80 A, while the instantaneous short-circuit setting can be adjusted from 400–800 A, allowing the protection characteristics to be coordinated with the connected circuit.
Designed for UL/CSA applications, the 1SDA074742R1 is supplied as a fixed three-pole breaker with front terminals. ABB specifies a rated voltage of 600 V and an N-class interruption rating of 25 kA at 480 V AC, making it suitable for industrial, commercial and OEM low-voltage distribution equipment.
Key Advantages
- Genuine ABB SACE Tmax XT2N 125 moulded case circuit breaker.
- 80 A rated current for low-voltage distribution protection.
- Adjustable 56–80 A thermal overload setting supports circuit coordination.
- Adjustable 400–800 A instantaneous magnetic trip range.
- N-class interruption rating of 25 kA at 480 V AC.
- Designed for UL/CSA applications.
- Fixed mounting with front terminals supports straightforward panel and switchboard integration.
Key Features
- ABB SACE Tmax XT2N 125 frame.
- 80 A rated current.
- 3-pole configuration.
- TMA thermal-magnetic trip unit.
- Adjustable thermal overload range of 56–80 A.
- Adjustable instantaneous magnetic setting of 400–800 A.
- 600 V rated voltage.
- 25 kA at 480 V AC N-class interruption rating.
- Fixed installation with front terminals.
- UL-certified configuration.
Adjustable Thermal-Magnetic Protection for Distribution Circuits
The TMA release combines thermal and magnetic protection while providing adjustment of both operating thresholds. The thermal element protects conductors and equipment against sustained overloads, while the magnetic element provides rapid operation during severe short-circuit conditions.
For the ABB 1SDA074742R1, the thermal setting can be adjusted from 56–80 A and the instantaneous magnetic setting from 400–800 A. This adjustability provides greater flexibility than a fixed thermal-magnetic release and allows the breaker settings to be coordinated more closely with the requirements of the protected circuit.
Typical Applications
- Industrial low-voltage distribution panels.
- Commercial building electrical distribution systems.
- Three-phase feeder and branch circuits.
- OEM machinery and electrical equipment.
- Control panels and power distribution enclosures.
- Circuits requiring adjustable thermal and instantaneous magnetic protection.
- UL/CSA-oriented electrical assemblies and switchgear.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| Product group | T-Max XT 250 Range |
| ABB order code | 1SDA074742R1 |
| Alternate catalogue number | XT2NU3080BFF000XXX |
| EAN / GTIN | 8015644787196 |
| Product type | Moulded case circuit breaker |
| Rated current | 80 A |
| Frame size | 125 A |
| Number of poles | 3 |
| Trip unit | TMA thermal-magnetic release |
| Thermal overload adjustment range | 56–80 A |
| Instantaneous magnetic trip adjustment range | 400–800 A |
| Rated voltage | 600 V |
| Interruption rating | N – 25 kA at 480 V AC |
| Installation | Fixed |
| Main connection position | Front |
| Terminals | Front terminals |
| Degree of protection | IP20 |
| Power dissipation | 5.8 W |
| Certification | UL |
| Motor operator | Optional |
| Integrated earth-fault protection | No |
| Minimum order quantity | 1 piece |
| Customs tariff number | 85362090 |
Frequently Asked Questions
What is the ABB 1SDA074742R1?
The ABB 1SDA074742R1 is an XT2N 125 three-pole moulded case circuit breaker rated at 80 A, with a TMA adjustable thermal-magnetic release, fixed mounting and front terminals for UL/CSA applications.
What does TMA 80-400..800 mean on the ABB XT2N breaker?
TMA identifies the adjustable thermal-magnetic release. This model has an 80 A rated current and an adjustable instantaneous magnetic short-circuit setting of 400–800 A.
What is the thermal overload adjustment range of the ABB 1SDA074742R1?
The TMA thermal overload setting can be adjusted from 56–80 A, allowing the breaker to be coordinated with the requirements of the protected circuit.
What is the interruption rating of the ABB 1SDA074742R1?
ABB specifies an N-class interruption rating of 25 kA at 480 V AC for this XT2N 125 configuration.
How is the ABB 1SDA074742R1 installed?
The breaker is supplied as a fixed three-pole unit with front terminals for integration into compatible low-voltage switchboards, panels and electrical equipment.
Trusted ABB Low-Voltage Protection Technology
ABB SACE Tmax XT moulded case circuit breakers combine compact construction with proven circuit protection technology, and the XT2N 125 TMA 80-400..800 provides adjustable thermal-magnetic protection for demanding UL/CSA industrial, commercial and OEM low-voltage applications.
