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.
1SDA074645R1 ABB XT1N 125 TMF 90-900 3-Pole MCCB UL/CSA
ABB 1SDA074645R1 XT1N 125 is a 90 A three-pole fixed moulded case circuit breaker with front terminals, a TMF thermomagnetic trip unit, a 900 A magnetic trip threshold and a 25 kA interruption rating at 480 V AC for low-voltage circuit protection.
£317.90
Why Choose the ABB XT1N 125 TMF 90-900 3p F F UL/CSA?
The ABB XT1N 125 TMF 90-900 3p F F UL/CSA, order code 1SDA074645R1, is a three-pole moulded case circuit breaker (MCCB) designed for dependable overload and short-circuit protection in low-voltage power distribution systems. Part of the ABB SACE Tmax XT1 range, it combines a compact 125 A frame with a 90 A TMF thermomagnetic trip unit.
The integrated TMF thermomagnetic release provides thermal overload protection together with magnetic short-circuit protection. This configuration has a 90 A rated current and a 900 A magnetic trip threshold, providing straightforward circuit protection without requiring an electronic trip unit.
Configured as a three-pole fixed circuit breaker with front terminals, the 1SDA074645R1 has an ABB-specified rated voltage of 600Y/347 V and an N interruption rating of 25 kA at 480 V AC. Its UL/CSA configuration makes it particularly suitable for industrial machinery, distribution equipment and OEM panels designed for applicable North American electrical standards.
Key Advantages
- Compact ABB SACE Tmax XT1N moulded case circuit breaker for low-voltage distribution.
- 90 A rated current within the XT1 125 A frame.
- TMF thermomagnetic trip unit provides overload and short-circuit protection.
- 900 A magnetic trip threshold for rapid response to high fault currents.
- 25 kA interruption rating at 480 V AC for the XT1N configuration.
- UL/CSA configuration for applicable North American electrical equipment requirements.
- Fixed three-pole construction with front terminals for straightforward switchboard integration.
Key Features
- ABB SACE Tmax XT1N 125 MCCB.
- 90 A rated current.
- 125 A frame size.
- 3-pole configuration.
- TMF thermomagnetic trip unit.
- Thermal protection for sustained overload conditions.
- Magnetic protection for short-circuit conditions.
- 900 A magnetic trip threshold.
- N interruption-performance class.
- 25 kA interruption rating at 480 V AC.
- Rated voltage of 600Y/347 V.
- Fixed mounting with front terminals.
- UL certified configuration.
Compact Thermomagnetic Protection for Power Distribution
Thermomagnetic moulded case circuit breakers combine two established protection principles within a single device. The thermal element responds to sustained overload conditions, while the magnetic element provides rapid operation when high short-circuit currents occur. This provides dependable circuit protection through a straightforward trip system without the configuration requirements associated with electronic releases.
The ABB XT1N 125 1SDA074645R1 combines this proven TMF protection technology with the compact Tmax XT1 platform. Its 90 A rating, 900 A magnetic trip threshold, three-pole construction and 25 kA interruption rating at 480 V AC make it well suited to feeders, machinery supplies and distribution circuits requiring robust UL-oriented circuit protection.
Typical Applications
- Industrial low-voltage power distribution systems.
- Commercial switchboards and distribution panels.
- Three-phase feeder and branch-circuit protection.
- Machinery and industrial automation power supplies.
- OEM electrical equipment for applicable North American markets.
- Control panels requiring UL-configured circuit protection.
- Electrical systems requiring thermomagnetic overload and short-circuit protection.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| Product group | T-Max XT 250 Range |
| Order code | 1SDA074645R1 |
| Alternate catalogue number | XT1NU3090AFF000XXX |
| Product type | Moulded case circuit breaker |
| Frame size | XT1 |
| Frame rating | 125 A |
| Performance level | N |
| Rated current | 90 A |
| Number of poles | 3 |
| Trip unit | TMF thermomagnetic release |
| Magnetic trip threshold | 900 A |
| Magnetic trip multiple | 10 × In |
| Rated voltage | 600Y/347 V |
| Interruption rating | 25 kA at 480 V AC |
| Mounting type | Fixed |
| Terminal type | Front terminals |
| Standard / certification | UL |
| EAN | 8015644786229 |
| Customs tariff number | 85362000 |
| Net weight | approx. 1.1 kg |
Frequently Asked Questions
What is the ABB 1SDA074645R1 used for?
The ABB 1SDA074645R1 is a 90 A three-pole moulded case circuit breaker designed to provide thermomagnetic overload and short-circuit protection in low-voltage electrical distribution systems.
What trip unit is fitted to the ABB XT1N 125 1SDA074645R1?
The circuit breaker is fitted with an ABB TMF thermomagnetic release, combining thermal overload protection with magnetic short-circuit protection.
What does 90-900 mean on the XT1N 125 TMF?
The designation identifies a 90 A rated current together with a 900 A magnetic trip threshold, equivalent to 10 times the rated current.
What is the interruption rating of the ABB XT1N 1SDA074645R1?
ABB specifies the N-performance XT1 configuration with an interruption rating of 25 kA at 480 V AC.
How is the ABB XT1N 125 TMF 1SDA074645R1 installed?
This version is a fixed three-pole circuit breaker with front terminals, designed for permanent installation within compatible low-voltage switchboards, distribution panels and OEM electrical assemblies.
Trusted ABB Low-Voltage Circuit Protection
ABB SACE Tmax XT moulded case circuit breakers combine compact construction, proven thermomagnetic protection and robust interruption performance for industrial, commercial and OEM low-voltage power distribution systems.
