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.
1SDA071321R1 ABB E1.2N 250 Ekip Dip LI 4p F F Air Circuit Breaker 250 A
ABB 1SDA071321R1 Emax 2 E1.2N 250 four-pole fixed air circuit breaker with a 250 A rating, Ekip Dip LI electronic protection and 66 kA ultimate breaking capacity at 400–440 V AC.
£5,221.36
Why Choose the ABB E1.2N 250 Ekip Dip LI 4p F F Air Circuit Breaker?
The ABB E1.2N 250 Ekip Dip LI 4p F F, order code 1SDA071321R1, is a high-performance four-pole air circuit breaker (ACB) designed for protection and switching in low-voltage power distribution systems. As part of the advanced ABB SACE Emax 2 series, it combines dependable circuit protection with the compact E1.2 frame and ABB's Ekip Dip electronic trip technology.
This fixed-version circuit breaker features front terminals and an Ekip Dip LI electronic protection release, providing long-time overload and instantaneous short-circuit protection. The Emax 2 platform is designed for electrical distribution installations where reliable protection, high breaking performance and straightforward integration into switchboards are required.
With a rated uninterrupted current of 250 A, a rated operational voltage up to 690 V AC and an ultimate short-circuit breaking capacity of 66 kA at 400–440 V AC, the E1.2N 250 is suited to demanding commercial and industrial power distribution applications. Its four-pole configuration enables switching and protection of three phases and neutral, while the fixed construction provides a robust solution for permanent switchboard installation.
Key Advantages
- High-performance ABB SACE Emax 2 air circuit breaker for low-voltage power distribution.
- 250 A rated uninterrupted current for industrial and commercial electrical systems.
- 66 kA ultimate breaking capacity at 400–440 V AC for dependable short-circuit protection.
- Ekip Dip LI electronic trip unit provides overload and instantaneous short-circuit protection.
- Four-pole configuration provides switching across three phases and neutral.
- Fixed construction with front terminal connections for switchboard installation.
Key Features
- ABB SACE Emax 2 E1.2N series.
- 250 A rated current.
- Four-pole air circuit breaker.
- 690 V AC rated operational voltage.
- 66 kA Icu at 400–440 V AC.
- 50 kA Ics at 400–440 V AC.
- 50 kA short-time withstand current for 1 s.
- Ekip Dip LI electronic release.
- Fixed version with front terminals.
- Designed in accordance with IEC 60947-2 requirements.
Reliable Protection for Low-Voltage Power Distribution
Air circuit breakers such as the ABB SACE Emax 2 E1.2N protect electrical distribution systems against potentially damaging overload and short-circuit conditions. Their high current-handling and breaking capabilities make them particularly suitable for main and feeder protection within commercial and industrial low-voltage switchboards.
The Ekip Dip LI trip unit provides electronic long-time and instantaneous protection functions, allowing the circuit breaker to respond to sustained overloads and severe short-circuit faults. Combined with the Emax 2 platform's robust construction and high breaking capacity, this makes the 1SDA071321R1 a dependable choice for critical electrical distribution infrastructure.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial electrical distribution systems.
- Commercial building power distribution.
- Manufacturing and process plants.
- Transformer and installation protection.
- Main incomer and feeder circuit protection.
- Infrastructure and utility distribution panels.
Technical Specifications
| Series | SACE Emax 2 |
|---|---|
| Order code / MPN | 1SDA071321R1 |
| Product type | Air circuit breaker |
| Frame / sub-type | E1.2 |
| Performance level | N |
| Rated current (In) | 250 A |
| Rated uninterrupted current (Iu) | 250 A |
| Rated operational voltage | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V AC |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated ultimate short-circuit breaking capacity (Icu) at 400–440 V AC | 66 kA |
| Rated ultimate short-circuit breaking capacity (Icu) at 500–690 V AC | 50 kA |
| Rated service short-circuit breaking capacity (Ics) at 400–690 V AC | 50 kA |
| Rated short-time withstand current (Icw) | 50 kA for 1 s |
| Number of poles | 4 |
| Current type | AC |
| Trip unit | Ekip Dip LI |
| Release type | Electronic |
| Protection functions | Long-time overload and instantaneous short-circuit protection |
| Version | Fixed |
| Terminal connection | Front terminals |
| Neutral pole current | 100% of Iu |
| Power loss | 31 W |
| Mechanical durability | 20,000 operating cycles |
| Electrical durability | 8,000 operating cycles |
| Standard | IEC 60947-2 |
| EAN | 8015644751715 |
Frequently Asked Questions
What is the ABB 1SDA071321R1 used for?
The ABB 1SDA071321R1 is an Emax 2 air circuit breaker designed to provide switching, overload protection and short-circuit protection in low-voltage electrical distribution systems.
What is the current rating of the ABB E1.2N 250?
The circuit breaker has a rated uninterrupted current of 250 A.
What is the breaking capacity of the 1SDA071321R1?
The E1.2N 250 has a rated ultimate short-circuit breaking capacity (Icu) of 66 kA at 400–440 V AC and 50 kA at 500–690 V AC.
What protection unit is fitted to this circuit breaker?
The breaker is fitted with an ABB Ekip Dip LI electronic trip unit, providing long-time overload and instantaneous short-circuit protection.
Is the ABB 1SDA071321R1 a fixed or withdrawable circuit breaker?
The 1SDA071321R1 is a fixed four-pole circuit breaker with front terminals, designed for permanent installation within a low-voltage switchboard.
Trusted Low-Voltage Protection from ABB
ABB SACE Emax 2 air circuit breakers are engineered for reliable protection, switching and management of low-voltage electrical distribution systems across industrial, commercial and infrastructure applications.
