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1SDA071455R1 ABB E1.2B 1250 Ekip Touch LSI 4p F F Air Circuit Breaker 1250 A
ABB 1SDA071455R1 Emax 2 E1.2B 1250 four-pole fixed air circuit breaker with a 1250 A rating, Ekip Touch LSI electronic protection, front terminals and 42 kA ultimate breaking capacity at 400 V AC.
£5,236.41
Why Choose the ABB E1.2B 1250 Ekip Touch LSI 4p F F Air Circuit Breaker?
The ABB E1.2B 1250 Ekip Touch LSI 4p F F, order code 1SDA071455R1, is a high-performance four-pole air circuit breaker (ACB) from the ABB SACE Emax 2 range, designed for protection and switching in low-voltage electrical distribution systems. Combining the compact E1.2 frame with an Ekip Touch LSI electronic trip unit, it provides configurable protection for substantial industrial, commercial and infrastructure electrical loads.
This fixed circuit breaker features front terminals and an Ekip Touch LSI solid-state electronic release, providing long-time overload, selective short-time short-circuit and instantaneous short-circuit protection. The addition of adjustable short-time protection supports effective coordination between upstream and downstream protective devices, while the Ekip Touch interface provides convenient configuration of the breaker protection functions.
With a rated uninterrupted current of 1250 A, a rated operational voltage of 690 V AC and an ultimate short-circuit breaking capacity of 42 kA at 400 V AC, the E1.2B 1250 provides dependable protection for high-current distribution circuits. Its four-pole configuration, fixed construction and front terminal arrangement make it well suited to permanent installation within modern low-voltage switchboards.
Key Advantages
- High-performance ABB SACE Emax 2 air circuit breaker for low-voltage power distribution.
- 1250 A rated uninterrupted current for substantial industrial and commercial electrical loads.
- 42 kA ultimate short-circuit breaking capacity at 400 V AC for dependable fault interruption.
- Ekip Touch LSI electronic trip unit provides overload, selective short-time and instantaneous short-circuit protection.
- Adjustable short-time protection supports improved selectivity and coordination between protective devices.
- Touch-based Ekip interface simplifies protection configuration and monitoring.
- Four-pole configuration provides switching across three phases and neutral.
- Fixed construction with front terminal connections for permanent switchboard installation.
Key Features
- ABB SACE Emax 2 E1.2B series.
- 1250 A rated uninterrupted current.
- Four-pole air circuit breaker.
- 690 V AC rated voltage.
- 42 kA Icu at 400 V AC.
- Ekip Touch LSI solid-state electronic protection release.
- Adjustable long-time overload (L) protection from 500–1250 A.
- Adjustable selective short-time short-circuit (S) protection from 750–12500 A.
- Adjustable instantaneous short-circuit (I) protection from 1875–18750 A.
- LSI protection enables enhanced selectivity within low-voltage distribution networks.
- Fitted with four changeover auxiliary contacts.
- Circuit-breaker open/closed position indication.
- Optional motor drive capability.
- Fixed version with front terminals.
Selective Electronic Protection for High-Current Distribution
The ABB SACE Emax 2 E1.2B combines a compact air circuit breaker platform with substantial current capacity and dependable fault interruption. Its 1250 A continuous-current rating and 42 kA ultimate breaking capacity at 400 V AC make it suitable for main incomers, distribution feeders and other high-current circuits within industrial and commercial low-voltage switchboards.
The Ekip Touch LSI trip unit provides three complementary protection functions. Long-time overload protection is adjustable from 500–1250 A, short-time delayed protection from 750–12500 A, and instantaneous protection from 1875–18750 A. This combination allows protection settings to be coordinated with downstream devices, helping localise faults while supporting continuity of supply elsewhere in the electrical distribution system.
Typical Applications
- Low-voltage main distribution switchboards.
- Industrial electrical distribution systems.
- Commercial building power distribution.
- Manufacturing and process plants.
- Main incomer and feeder circuit protection.
- Transformer secondary distribution systems.
- Distribution systems requiring selective short-circuit protection.
- High-current circuits requiring configurable electronic protection.
Technical Specifications
| Series | SACE Emax 2 |
|---|---|
| Order code / MPN | 1SDA071455R1 |
| EAN | 8015644753054 |
| Product type | Air circuit breaker |
| Frame | E1.2 |
| Performance level | B |
| Rated uninterrupted current (Iu) | 1250 A |
| Rated voltage | 690 V AC |
| Rated ultimate short-circuit breaking capacity (Icu) at 400 V AC | 42 kA |
| Number of poles | 4 |
| Current type | AC |
| Trip unit | Ekip Touch LSI |
| Release type | Solid-state electronic |
| Overload protection adjustment | 500–1250 A |
| Short-time delayed short-circuit adjustment | 750–12500 A |
| Instantaneous short-circuit adjustment | 1875–18750 A |
| Protection functions | Long-time overload, selective short-time short-circuit and instantaneous short-circuit protection |
| Integrated earth-fault protection | No |
| Version | Fixed |
| Terminal connection | Front terminals |
| Main circuit connection | Bolted connection |
| Auxiliary contacts | 4 changeover contacts |
| Position indication | Circuit breaker open / closed |
| Motor drive | Optional |
| Motor drive integrated | No |
| Product net width | 280 mm |
| Product net height | 296 mm |
| Product net depth | 183 mm |
| Product net weight | 16 kg |
| Country of origin | Italy |
Frequently Asked Questions
What is the ABB 1SDA071455R1 used for?
The ABB 1SDA071455R1 is an Emax 2 air circuit breaker designed for switching and configurable overload and short-circuit protection in low-voltage electrical distribution systems.
What is the current rating of the ABB E1.2B 1250?
The circuit breaker has a rated uninterrupted current of 1250 A, with its long-time overload protection adjustable from 500–1250 A.
What is the breaking capacity of the ABB 1SDA071455R1?
The E1.2B 1250 has a rated ultimate short-circuit breaking capacity (Icu) of 42 kA at 400 V AC.
What protection unit is fitted to the ABB E1.2B 1250?
The breaker is fitted with an ABB Ekip Touch LSI electronic trip unit, providing long-time overload, selective short-time short-circuit and instantaneous short-circuit protection.
Is the ABB 1SDA071455R1 fixed or withdrawable?
The 1SDA071455R1 is a fixed four-pole circuit breaker with front terminals, designed for permanent installation within a low-voltage electrical switchboard.
Trusted Low-Voltage Protection from ABB
ABB SACE Emax 2 air circuit breakers combine dependable switching, configurable electronic protection and selective short-circuit performance for demanding low-voltage distribution systems across industrial, commercial and infrastructure applications.
