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1SDA071451R1 ABB E1.2B 1250 Ekip Dip LI 4p F F Air Circuit Breaker
ABB 1SDA071451R1 SACE Emax 2 E1.2B 1250 four-pole fixed air circuit breaker with front terminals, Ekip Dip LI electronic protection, 1250 A rated current and 42 kA ultimate short-circuit breaking capacity.
£4,890.34
Why Choose the ABB E1.2B 1250 Ekip Dip LI 4p F F Air Circuit Breaker?
The ABB E1.2B 1250 Ekip Dip LI 4p F F, order code 1SDA071451R1, is a SACE Emax 2 air circuit breaker (ACB) designed for protection, switching and isolation in low-voltage power distribution systems. This fixed four-pole E1.2B breaker combines a 1250 A rated uninterrupted current with ABB's Ekip Dip LI solid-state electronic trip unit.
The Ekip Dip LI release provides adjustable long-time overload and instantaneous short-circuit protection. The long-time threshold can be set from 0.4–1 × In, while instantaneous protection is adjustable from 1.5–15 × In, with settings made through DIP switches for straightforward commissioning and protection configuration.
The E1.2B performance level provides an ultimate short-circuit breaking capacity of 42 kA from 400 to 690 V AC, with Ics equal to 100% of Icu and a 42 kA short-time withstand current for 1 s. Its fixed four-pole construction, front terminals and four auxiliary change-over contacts make it a practical solution for industrial switchboards, commercial distribution systems and high-current incoming or distribution feeders.
Key Advantages
- Compact 1250 A SACE Emax 2 air circuit breaker for low-voltage power distribution.
- Ekip Dip LI solid-state electronic release provides adjustable overload and instantaneous short-circuit protection.
- 42 kA ultimate short-circuit breaking capacity from 400 to 690 V AC.
- Service short-circuit breaking capacity is 100% of Icu.
- 42 kA short-time withstand current for 1 s.
- Four-pole configuration with a neutral pole rated at 100% of Iu.
- Fixed construction with front terminals provides practical integration into low-voltage switchboards.
Key Features
- ABB SACE Emax 2 E1.2B series.
- 1250 A rated uninterrupted current (Iu).
- 4-pole configuration.
- 100% neutral-pole current rating.
- Fixed circuit breaker construction.
- Front terminals.
- Ekip Dip LI solid-state electronic release.
- Long-time (L) overload protection.
- Instantaneous (I) short-circuit protection.
- 500–1250 A long-time overload adjustment range.
- 1875–18750 A instantaneous short-circuit adjustment range.
- Protection settings configured using DIP switches.
- 42 kA Icu at 400–690 V AC.
- Four change-over auxiliary contacts.
- Circuit-breaker open/closed position indication.
Reliable Overload and Short-Circuit Protection
The ABB SACE Emax 2 E1.2B combines switching, isolation and electronic protection in a compact air circuit breaker platform. Its 1250 A rated current, four-pole configuration, 42 kA ultimate breaking capacity and 42 kA short-time withstand capability for 1 s make it suitable for important incoming and distribution positions within low-voltage switchboards.
The Ekip Dip LI release provides adjustable long-time overload protection together with instantaneous short-circuit protection. This combination helps protect conductors, busbars and connected equipment against sustained overcurrents and severe short circuits, while DIP-switch adjustment provides a straightforward method for configuring the protection thresholds during commissioning.
Typical Applications
- Low-voltage electrical distribution switchboards.
- Industrial power distribution systems.
- Main and sub-main incoming feeders.
- Four-pole distribution circuits requiring neutral switching.
- Transformer secondary and installation protection.
- Commercial and infrastructure electrical systems.
- Manufacturing and process facilities.
- Switchboards requiring a fixed 1250 A ACB with adjustable LI protection.
Technical Specifications
| Series | SACE Emax 2 |
|---|---|
| Frame | E1.2B |
| ABB order code | 1SDA071451R1 |
| Product type | Air circuit breaker |
| Rated uninterrupted current (Iu) | 1250 A |
| Rated current (In) | 1250 A |
| Rated operational voltage (Ue) | 690 V AC |
| Rated insulation voltage (Ui) | 1000 V AC |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Frequency | 50/60 Hz |
| Number of poles | 4 |
| Neutral-pole current | 100% of Iu |
| Short-circuit performance level | B |
| Trip unit | Ekip Dip LI |
| Release type | Solid-state electronic release |
| Protection functions | L and I |
| Long-time overload adjustment | 0.4–1 × In / 500–1250 A |
| Instantaneous short-circuit adjustment | 1.5–15 × In / 1875–18750 A |
| Ultimate short-circuit breaking capacity (Icu) at 400 V AC | 42 kA |
| Ultimate short-circuit breaking capacity (Icu) at 415 V AC | 42 kA |
| Ultimate short-circuit breaking capacity (Icu) at 440 V AC | 42 kA |
| Ultimate short-circuit breaking capacity (Icu) at 500 V AC | 42 kA |
| Ultimate short-circuit breaking capacity (Icu) at 525 V AC | 42 kA |
| Ultimate short-circuit breaking capacity (Icu) at 690 V AC | 42 kA |
| Rated service short-circuit breaking capacity (Ics) | 100% of Icu |
| Short-time withstand current (Icw), 1 s | 42 kA |
| Short-time withstand current (Icw), 3 s | 24 kA |
| Integrated earth-fault protection | No |
| Execution | Fixed |
| Terminal arrangement | Front terminals |
| Main-circuit connection | Bolt connection |
| Auxiliary contacts | 4 change-over contacts |
| Circuit-breaker open/closed indication | Yes |
| Motor drive integrated | No |
| Motor drive | Optional |
| Degree of protection | IP30 |
| Power loss | 122 W |
| Maximum operating frequency | 60 cycles per hour |
| Standard | IEC 60947-2 |
| EAN | 8015644753016 |
| ABB product group | Emax2 Air Circuit Breaker |
Frequently Asked Questions
What is the ABB 1SDA071451R1?
The ABB 1SDA071451R1 is a SACE Emax 2 E1.2B 1250 Ekip Dip LI four-pole fixed air circuit breaker with front terminals, a 1250 A rated current and adjustable electronic LI protection.
What is the rated current of the ABB E1.2B 1250?
The breaker has a rated uninterrupted current of 1250 A, with adjustable long-time overload protection from 500–1250 A.
What protection does the Ekip Dip LI trip unit provide?
The Ekip Dip LI electronic release provides long-time overload (L) and instantaneous short-circuit (I) protection. The long-time threshold is adjustable from 0.4–1 × In and the instantaneous threshold from 1.5–15 × In.
What is the breaking capacity of ABB 1SDA071451R1?
The E1.2B 1250 has an ultimate short-circuit breaking capacity of 42 kA from 400 to 690 V AC. Its service breaking capacity is 100% of Icu, and its short-time withstand current is 42 kA for 1 s.
Where is the ABB E1.2B 1250 Ekip Dip LI typically used?
It is typically used in low-voltage distribution boards, industrial switchboards, incoming feeders and four-pole distribution circuits requiring dependable overload and instantaneous short-circuit protection.
Dependable Protection for Low-Voltage Distribution
ABB SACE Emax 2 air circuit breakers combine compact construction, adjustable electronic protection and dependable switching performance, providing a flexible solution for industrial, commercial and infrastructure low-voltage distribution systems.
