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.
ABB 1SDA125854R1 is a 4000 A four-pole Emax 3 E6.3X/f withdrawable air circuit breaker with Ekip Aware LSI protection for high-current low-voltage power distribution.
£40,620.05
The ABB 1SDA125854R1 is a high-performance low-voltage air circuit breaker designed for reliable protection and switching of high-current electrical distribution systems. As part of the advanced ABB SACE Emax 3 circuit breaker series, this withdrawable breaker combines intelligent Ekip Aware protection technology with exceptional short-circuit performance for demanding power distribution applications.
The Emax 3 E6.3X/f platform is engineered for high-current installations where dependable circuit protection, operational continuity and advanced monitoring are essential. The Ekip Aware LSI trip unit provides long-time, short-time and instantaneous protection functions, while the withdrawable WMP configuration supports practical installation, operation and maintenance within compatible switchgear.
With a rated current of 4000 A, four poles and an Ekip Aware LSI protection function, the 1SDA125854R1 is suited to major low-voltage switchboards and power distribution systems. Its E6.3X/f configuration provides an interrupting capacity of 150 kA at 440 V AC, with a short-time withstand current of 120 kA for 1 s.
Air circuit breakers such as the ABB Emax 3 provide controlled switching and protection for low-voltage electrical distribution systems. The E6.3X/f platform is designed for high-current applications where substantial fault levels and continuous operational requirements demand robust circuit protection.
The integrated Ekip Aware LSI protection system combines long-time, short-time and instantaneous protection functions for comprehensive circuit protection. The withdrawable configuration allows the breaker to be positioned within compatible switchgear for efficient operation and maintenance, while the Emax 3 platform supports advanced digitalisation and connectivity for modern electrical distribution systems.
Tick the specs you need, then view products that match.
| Device Type | ACB | |
|---|---|---|
| Current | 4000 A | |
| Poles | 4-pole | |
| Phase | Three Phase | |
| Breaking Capacity | 150 kA | |
| Trip Unit | LSI | |
| Application | Power distribution | |
| Mounting Type | Withdrawable | |
| Manufacturer | ABB | |
| Series | SACE Emax 3 | |
| Model | 1SDA125854R1 | |
| Product type | Low-voltage air circuit breaker | |
| Breaker type | E6.3X/f 4000 Ekip Aware LSI 4p WMP | |
| Rated current | 4000 A | |
| Number of poles | 4 | |
| Protection unit | Ekip Aware LSI | |
| Ultimate short-circuit breaking capacity (Icu) | 150 kA at 440 V AC | |
| Short-time withstand current (Icw) | 120 kA for 1 s | |
| Execution | Withdrawable | |
| Configuration | WMP moving portion | |
| HS Code | 85362090 |
The ABB 1SDA125854R1 is a high-current four-pole Emax 3 air circuit breaker designed for protection and switching in low-voltage power distribution systems.
The breaker has a rated current of 4000 A, making it suitable for high-capacity electrical distribution applications.
The 1SDA125854R1 is equipped with an Ekip Aware LSI protection unit providing long-time, short-time and instantaneous protection functions.
The ABB E6.3X/f 4000 configuration provides an Icu of 150 kA at 440 V AC.
The WMP configuration identifies the withdrawable moving portion of the Emax 3 circuit breaker, allowing the breaker to be installed within compatible switchgear and withdrawn for maintenance.
ABB SACE Emax 3 circuit breakers are designed for demanding low-voltage power distribution systems, combining high-current switching capability, intelligent protection and advanced connectivity for modern electrical infrastructure.
We use cookies
We use essential cookies to run this site, your basket and checkout. With your permission we'd also like to use analytics and advertising cookies to understand how the site is used and to measure our adverts.