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1SDA075421R1 ABB XT4N 250 Ekip LSI In=150A 3p F F UL/CSA Circuit Breaker
ABB 1SDA075421R1 XT4N 250 is a three-pole fixed UL/CSA moulded case circuit breaker with front terminals, a 150 A Ekip Dip LSI electronic trip unit, 600 V AC rating and 25 kA interruption rating at 480 V AC.
£1,213.61
Why Choose the ABB XT4N 250 Ekip LSI In=150A 3p F F UL/CSA Circuit Breaker?
The ABB XT4N 250 Ekip LSI In=150A 3p F F UL/CSA, order code 1SDA075421R1, is a three-pole moulded case circuit breaker designed for reliable protection of low-voltage power distribution systems. Part of the ABB SACE Tmax XT / T-Max XT 250 Range, it combines the compact XT4 frame with an electronic Ekip protection release for industrial and commercial applications.
This circuit breaker incorporates an Ekip Dip LSI solid-state trip unit rated at 150 A. LSI protection provides long-time overload (L), short-time short-circuit (S) and instantaneous short-circuit (I) functions, allowing more flexible protection coordination than a conventional fixed thermomagnetic release.
The XT4N 1SDA075421R1 features a three-pole fixed construction with front terminals, a rated voltage of 600 V AC and an N-class interruption rating of 25 kA at 480 V AC. Its UL/CSA configuration makes it suitable for switchboards, distribution panels, machinery and OEM electrical assemblies requiring dependable electronic circuit protection.
Key Advantages
- Compact ABB SACE Tmax XT4 moulded case circuit breaker.
- 150 A Ekip Dip LSI electronic trip unit.
- LSI protection functions for overload, short-time and instantaneous short-circuit protection.
- N-class 25 kA interruption rating at 480 V AC.
- Three-pole fixed construction for three-phase distribution systems.
- Front terminals for straightforward integration into switchboards and panels.
Key Features
- ABB SACE Tmax XT4N 250 frame.
- Ekip Dip LSI solid-state electronic release.
- 150 A rated trip-unit current.
- Long-time overload protection (L).
- Short-time short-circuit protection (S).
- Instantaneous short-circuit protection (I).
- Three-pole construction.
- 600 V AC rated voltage.
- 25 kA interruption rating at 480 V AC.
- Fixed mounting with front terminals.
- UL/CSA configuration for North American electrical distribution applications.
Flexible Ekip LSI Electronic Circuit Protection
The Ekip LSI electronic release provides coordinated protection against the principal overcurrent conditions encountered in low-voltage distribution systems. Long-time protection responds to sustained overloads, short-time protection supports selective coordination during short-circuit conditions, and instantaneous protection provides rapid interruption of severe faults.
Combined with the compact XT4N frame, the electronic trip unit makes the 1SDA075421R1 a versatile solution for applications requiring greater protection flexibility than conventional thermomagnetic breakers. Its fixed three-pole construction and front-terminal connections simplify integration into switchboards, machinery panels and OEM distribution assemblies.
Typical Applications
- Industrial low-voltage distribution boards.
- Commercial electrical switchboards.
- UL/CSA power distribution assemblies.
- Feeder and distribution circuit protection.
- Industrial machinery and automation panels.
- OEM electrical and power distribution systems.
Technical Specifications
| Series | SACE Tmax XT / T-Max XT 250 Range |
|---|---|
| ABB order code | 1SDA075421R1 |
| Alternate catalogue number | XT4NU3150FFF000XXX |
| Product type | Moulded case circuit breaker |
| Frame size | XT4 |
| Frame designation | XT4N 250 |
| Performance level | N |
| Trip unit | Ekip Dip LSI |
| Trip-unit technology | Solid-state electronic |
| Rated trip-unit current | 150 A |
| Protection functions | LSI |
| Overload release setting range | 60–150 A |
| Short-time short-circuit setting range | 150–1500 A |
| Instantaneous short-circuit setting range | 150–1500 A |
| Number of poles | 3 |
| Rated voltage | 600 V AC |
| Interruption rating | N, 25 kA at 480 V AC |
| Mounting type | Fixed |
| Terminal type | Front terminals |
| Main-circuit connection | Bolt connection |
| Degree of protection | IP20 |
| Certification | UL / CSA |
| EAN / UPC | 8015644793982 |
Frequently Asked Questions
What is the ABB 1SDA075421R1 used for?
It is a three-pole moulded case circuit breaker designed to provide electronic overload and short-circuit protection in low-voltage electrical distribution systems.
What is the rated current of the ABB XT4N 250 Ekip LSI 1SDA075421R1?
The Ekip LSI electronic trip unit has a rated current of 150 A.
What does LSI mean on the ABB Ekip trip unit?
LSI identifies long-time overload, short-time short-circuit and instantaneous short-circuit protection.
What is the interruption rating of ABB 1SDA075421R1?
The XT4N provides an N-class interruption rating of 25 kA at 480 V AC.
How is the ABB XT4N 1SDA075421R1 installed?
This model is a fixed three-pole circuit breaker with front terminals, designed for integration into compatible switchboards, distribution panels and industrial electrical assemblies.
Trusted ABB Electronic Circuit Protection
ABB SACE Tmax XT moulded case circuit breakers combine compact construction with advanced electronic protection, providing dependable and flexible circuit protection for industrial, commercial and OEM low-voltage distribution systems.
