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1SDA080843R1 ABB XT1N 160 TMF 20-450 4-Pole Circuit Breaker
ABB 1SDA080843R1 XT1N 160 is a 20 A four-pole fixed moulded case circuit breaker with a TMF thermomagnetic trip unit, 450 A instantaneous magnetic protection and 36 kA ultimate breaking capacity at 415 V AC.
£309.70
Why Choose the ABB XT1N 160 TMF 20-450 1SDA080843R1 Circuit Breaker?
The ABB 1SDA080843R1 is a compact four-pole moulded case circuit breaker (MCCB) from the ABB SACE Tmax XT family, designed to provide dependable protection and isolation for low-voltage electrical distribution systems. Built on the XT1N 160 frame, it combines a compact footprint with thermomagnetic protection for industrial, commercial, infrastructure and OEM electrical applications.
This circuit breaker incorporates a TMF fixed thermomagnetic trip unit rated at 20 A, providing thermal overload protection together with instantaneous magnetic short-circuit protection. The magnetic trip threshold is 450 A, enabling rapid interruption of severe fault currents while the thermal element protects cables and connected equipment against sustained overload conditions.
The 1SDA080843R1 features a four-pole configuration, fixed mounting and front terminals. It has a rated operational voltage of up to 690 V AC, a rated insulation voltage of 800 V and an N-class ultimate short-circuit breaking capacity of 36 kA at 415 V AC, making it a versatile solution for three-phase four-wire distribution systems.
Key Advantages
- Genuine ABB SACE Tmax XT1N moulded case circuit breaker.
- Compact 160 A frame fitted with a 20 A fixed thermomagnetic release.
- Four-pole configuration for three-phase four-wire distribution applications.
- TMF protection combines thermal overload and instantaneous magnetic short-circuit protection.
- 450 A magnetic trip threshold provides rapid response to severe fault currents.
- 36 kA ultimate breaking capacity at 415 V AC for dependable fault interruption.
- Fixed installation with front terminals supports straightforward switchboard integration.
- Compact XT1 construction suits panel building and OEM applications where installation space is important.
Key Features
- ABB SACE Tmax XT1N 160 frame.
- 20 A rated current.
- TMF fixed thermomagnetic trip unit.
- Thermal overload protection.
- Instantaneous magnetic short-circuit protection.
- 450 A magnetic trip threshold.
- Four-pole construction.
- N performance class.
- Rated operational voltage up to 690 V AC.
- 36 kA ultimate short-circuit breaking capacity at 415 V AC.
- Fixed circuit breaker configuration.
- Front terminals for main circuit connections.
Thermomagnetic Protection for Low-Voltage Distribution
Thermomagnetic moulded case circuit breakers combine two complementary protection principles. The thermal element responds to sustained overload currents that could overheat conductors and connected equipment, while the magnetic element operates rapidly when a severe short circuit occurs. In the ABB 1SDA080843R1, the 20 A TMF release is combined with a 450 A instantaneous magnetic trip threshold.
The four-pole design makes this XT1N particularly suitable for three-phase four-wire distribution systems where switching and protection across four conductors are required. Combined with its fixed mounting, front terminals and 36 kA breaking capacity at 415 V AC, the breaker provides a compact protection solution for switchboard builders, OEMs and industrial or commercial electrical installations.
Typical Applications
- Three-phase four-wire low-voltage distribution systems.
- Industrial electrical switchboards.
- Commercial power distribution panels.
- Machine and equipment power supplies.
- OEM electrical control panels.
- Cable and feeder protection.
- General-purpose circuits requiring fixed thermomagnetic protection.
Technical Specifications
| Series | SACE Tmax XT / T-Max XT 250 Range |
|---|---|
| Frame | XT1N 160 |
| Product designation | XT1N 160 TMF 20-450 4p F F |
| ABB order code | 1SDA080843R1 |
| EAN | 8015644873714 |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame rated current (Iu) | 160 A |
| Rated current (In) | 20 A |
| Trip unit | TMF fixed thermomagnetic |
| Protection | Thermal overload and magnetic short-circuit |
| Instantaneous magnetic trip | 450 A |
| Number of poles | 4 |
| Performance class | N |
| Rated operational voltage | up to 690 V AC / 500 V DC |
| Rated insulation voltage (Ui) | 800 V |
| Rated impulse withstand voltage (Uimp) | 8 kV |
| Ultimate short-circuit breaking capacity (Icu) | 36 kA at 415 V AC |
| Service short-circuit breaking capacity (Ics) | 36 kA at 415 V AC |
| Selectivity category | A |
| Installation | Fixed |
| Terminal position | Front |
| Configuration | F F |
| Standard | IEC 60947-2 |
| Product net dimensions | 101.6 × 130 × 70 mm (W × H × D) |
| Product net weight | approx. 1.3 kg |
Frequently Asked Questions
What is the ABB 1SDA080843R1 used for?
The ABB 1SDA080843R1 is a four-pole moulded case circuit breaker designed to protect low-voltage electrical circuits against sustained overloads and short circuits using a TMF thermomagnetic trip unit.
What is the rated current of the ABB 1SDA080843R1?
The circuit breaker has a rated current of 20 A and uses the ABB XT1N 160 A frame.
What does TMF mean on the ABB XT1N 160?
TMF identifies the fixed thermomagnetic trip unit, combining thermal overload protection with instantaneous magnetic short-circuit protection.
What is the breaking capacity of the ABB 1SDA080843R1?
The XT1N 160 1SDA080843R1 has an ultimate short-circuit breaking capacity of 36 kA at 415 V AC.
How is the ABB 1SDA080843R1 installed?
The 1SDA080843R1 is a fixed four-pole circuit breaker with front terminals, making it suitable for integration into compatible low-voltage switchboards, distribution panels and OEM equipment.
Trusted ABB Protection for Low-Voltage Distribution
ABB SACE Tmax XT moulded case circuit breakers combine compact construction with dependable overload and short-circuit protection, providing panel builders, OEMs and electrical engineers with a versatile platform for industrial and commercial low-voltage distribution systems.
