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.
1SDA073398R1 ABB E1.2B/MS 1250 3p F F Switch Disconnector
ABB 1SDA073398R1 SACE Emax 2 E1.2B/MS 1250 three-pole fixed switch disconnector with front terminals, a 1250 A rated uninterrupted current, 690 V AC rating and 42 kA short-time withstand capability for high-current low-voltage switching and isolation.
£3,771.26
Why Choose the ABB E1.2B/MS 1250 3p F F Switch Disconnector?
The ABB E1.2B/MS 1250 3p F F, order code 1SDA073398R1, is a SACE Emax 2 switch disconnector designed for reliable switching and isolation in low-voltage electrical distribution systems. Built on ABB's compact E1.2 platform, this fixed three-pole device provides a 1250 A rated uninterrupted current and is suited to industrial, commercial and infrastructure switchboards where high-current isolation is required without an integral overcurrent protection trip unit.
The E1.2B/MS configuration functions as a circuit-breaker-derived switch disconnector, providing switching and isolation while circuit protection is supplied separately within the electrical installation. Its fixed construction and front terminals provide a straightforward arrangement for switchboard integration, while optional motor and voltage releases allow the device to be adapted to electrically controlled switching applications.
Rated for operation at up to 690 V AC, the E1.2B/MS 1250 provides a rated short-time withstand current of 42 kA for 1 s and 24 kA for 3 s. The compact E1.2 frame, three-pole arrangement and fixed front-terminal configuration make it a practical solution for high-current switching and isolation in space-conscious low-voltage switchboards.
Key Advantages
- 1250 A rated uninterrupted current for high-current low-voltage distribution systems.
- Three-pole switch disconnector for three-phase switching and isolation applications.
- 42 kA short-time withstand current for 1 s for demanding electrical networks.
- Rated for operation at up to 690 V AC.
- Fixed installation provides a compact and straightforward switchboard configuration.
- Front terminals support convenient integration into compatible switchboard layouts.
- Optional motor drive and voltage release provide flexibility for electrically controlled installations.
Key Features
- ABB SACE Emax 2 E1.2B/MS switch disconnector.
- 1250 A rated uninterrupted current.
- Three-pole configuration.
- Fixed installation.
- Front terminals.
- 690 V AC rated voltage.
- 42 kA rated short-time withstand current for 1 s.
- 24 kA rated short-time withstand current for 3 s.
- 1250 A AC-23 rated current at 400 V AC.
- 1250 A AC-21 rated current at 400 V AC.
- Optional motor drive.
- Optional voltage release.
- Interlockable construction.
- IP30 front-side degree of protection.
- Compact E1.2 frame for low-voltage switchboard integration.
Reliable High-Current Switching and Isolation
Switch disconnectors provide a dependable means of making, carrying and isolating electrical circuits while overcurrent protection is provided by separate protective equipment. In high-current low-voltage switchboards, they are commonly used where operators require a robust isolation point without the integral electronic protection functions associated with an air circuit breaker fitted with a trip unit.
The ABB E1.2B/MS 1250 combines a 1250 A continuous-current rating with 42 kA for 1 s short-time withstand capability. Its fixed three-pole configuration, front terminals and compact E1.2 construction make it suitable for main isolation, feeder switching and other high-current switching duties within industrial, commercial and infrastructure electrical distribution systems.
Typical Applications
- Main switchboard switching and isolation.
- Industrial low-voltage distribution systems.
- High-current feeder switching and isolation.
- Commercial building electrical distribution.
- Manufacturing and process plant switchboards.
- Infrastructure and utility distribution panels.
Technical Specifications
| Series | SACE Emax 2 |
|---|---|
| Order code / MPN | 1SDA073398R1 |
| EAN / GTIN | 8015644772482 |
| Product type | Switch disconnector |
| Product group | Emax 2 Air Circuit Breaker |
| Frame | E1.2 |
| Performance level | B/MS |
| Rated uninterrupted current (Iu) | 1250 A |
| Number of poles | 3 |
| Current type | AC |
| Rated voltage | 690 V AC |
| Rated short-time withstand current (Icw), 1 s | 42 kA |
| Rated short-time withstand current (Icw), 3 s | 24 kA |
| Rated current, AC-23 at 400 V | 1250 A |
| Rated current, AC-21 at 400 V | 1250 A |
| Short-circuit performance level | B |
| Motor drive | Optional |
| Motor drive integrated | No |
| Voltage release | Optional |
| Interlockable | Yes |
| Main-circuit connection | Bolt connection |
| Terminal configuration | Front terminals |
| Front-side degree of protection | IP30 |
| Installation | Fixed |
| Dimensions (W × H × D) | 210 × 296 × 183 mm |
| Net weight | 14 kg |
| Standard | IEC |
Frequently Asked Questions
What is the ABB 1SDA073398R1?
The ABB 1SDA073398R1 is an Emax 2 E1.2B/MS 1250 three-pole switch disconnector designed for fixed installation with front terminals in high-current low-voltage electrical distribution systems.
What is the rated current of the ABB E1.2B/MS 1250?
The E1.2B/MS 1250 has a rated uninterrupted current of 1250 A and is rated for operation at up to 690 V AC.
Is the ABB E1.2B/MS 1250 a circuit breaker or switch disconnector?
The 1SDA073398R1 is a switch disconnector. It is designed for switching and isolation duties rather than providing the integral overcurrent protection associated with an Emax 2 circuit breaker equipped with an electronic trip unit.
What is the short-time withstand current of the ABB 1SDA073398R1?
The E1.2B/MS 1250 has a rated short-time withstand current (Icw) of 42 kA for 1 s and 24 kA for 3 s.
Is the ABB 1SDA073398R1 fixed or withdrawable?
The 1SDA073398R1 is a fixed three-pole switch disconnector with front terminals, rather than a withdrawable moving-part version.
Trusted Switching and Isolation from ABB
ABB SACE Emax 2 switch disconnectors provide robust high-current switching and isolation for industrial, commercial and infrastructure low-voltage distribution systems, combining compact construction with dependable electrical performance.
