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1SDA058958R1 ABB E2N/MS 1250 4P W MP Switch Disconnector 1250 A
ABB 1SDA058958R1 E2N/MS 1250 is a 1250 A four-pole withdrawable SACE Emax switch-disconnector moving part designed for reliable high-current low-voltage power distribution and isolation.
£8,015.58
Why Choose the ABB E2N/MS 1250 4P W MP Switch Disconnector?
The ABB E2N/MS 1250 4P W MP, order code 1SDA058958R1, is a SACE Emax air switch disconnector moving part designed for high-current switching and isolation in low-voltage power distribution systems. Built on the ABB E2 frame, this four-pole device has a rated uninterrupted current of 1250 A and forms the moving part of a withdrawable SACE Emax installation.
The E2N/MS 1250 combines ABB's service-friendly withdrawable architecture with the N short-circuit performance level. It provides a rated short-time withstand current of 55 kA for 1 s and 42 kA for 3 s, supporting dependable switching and isolation in industrial distribution systems where substantial prospective fault currents may be present.
Rated for operation up to 690 V AC or 250 V DC, with a rated insulation voltage of 1000 V and rated impulse withstand voltage of 12 kV, the E2N/MS 1250 provides robust electrical performance for demanding switchboard applications. Its withdrawable moving-part configuration enables convenient servicing and replacement when installed with the corresponding SACE Emax fixed part.
Key Advantages
- High-current 1250 A SACE Emax switch disconnector for power distribution and isolation.
- Four-pole withdrawable construction supports service-friendly switchboard design.
- Supplied as the moving part for a compatible SACE Emax withdrawable assembly.
- Rated for operation up to 690 V AC or 250 V DC.
- 55 kA short-time withstand current for 1 s provides robust performance in demanding distribution systems.
- High electrical and mechanical endurance supports reliable long-term industrial operation.
Key Features
- ABB SACE Emax E2N/MS series.
- 1250 A rated uninterrupted current.
- Four-pole (4P) construction.
- Withdrawable (W) moving part (MP) configuration.
- 690 V AC / 250 V DC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- N short-circuit performance level.
- 15,000-cycle electrical durability.
- 25,000-cycle mechanical durability.
Reliable High-Current Isolation for Power Distribution
The ABB E2N/MS is designed to provide controlled switching and isolation rather than the overcurrent protection functions of a conventional circuit breaker. It is therefore suited to electrical systems where protection is provided separately and a robust high-current switching device is required for operational isolation, maintenance and segregation of distribution circuits.
Its withdrawable SACE Emax construction provides an important maintenance advantage because the moving part can be disconnected and withdrawn from its corresponding fixed section. Combined with its 1250 A rating, four-pole construction and 55 kA one-second withstand capability, the E2N/MS 1250 provides a dependable solution for demanding industrial and infrastructure power distribution assemblies.
Typical Applications
- Industrial low-voltage power distribution switchboards.
- Main incoming and distribution isolation.
- Withdrawable switchgear assemblies.
- Industrial plants and manufacturing facilities.
- Commercial and infrastructure power distribution systems.
- High-current feeder and busbar isolation.
Technical Specifications
| Series | SACE Emax / New Emax |
|---|---|
| ABB order code | 1SDA058958R1 |
| Product type | Air switch disconnector moving part |
| Frame / subtype | E2 |
| Short-circuit performance level | N |
| Rated current (In) | 1250 A |
| Rated operational current (Ie) | 1250 A |
| Rated uninterrupted current (Iu) | 1250 A |
| Number of poles | 4P |
| Current type | AC |
| Rated operational voltage | 690 V AC / 250 V DC |
| Rated voltage (Ur) | 690 V |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated short-time withstand current (Icw), 1 s | 55 kA |
| Rated short-time withstand current (Icw), 3 s | 42 kA |
| Installation version | Withdrawable |
| Configuration | Moving part |
| Electrical durability | 15,000 cycles |
| Electrical operating frequency | 30 cycles per hour |
| Mechanical durability | 25,000 cycles |
| Mechanical operating frequency | 60 cycles per hour |
| Power loss | 130 W |
| Product width | 414 mm |
| Product height | 461 mm |
| Product depth | 396.5 mm |
| Product net weight | 61 kg |
| Standard | IEC |
| EAN | 8015644613174 |
Frequently Asked Questions
What is the ABB 1SDA058958R1?
The ABB 1SDA058958R1 is an E2N/MS 1250 SACE Emax four-pole withdrawable switch-disconnector moving part rated at 1250 A.
What is the rated current of the E2N/MS 1250?
The E2N/MS 1250 has a rated uninterrupted current of 1250 A.
What voltage can the ABB E2N/MS 1250 operate at?
The switch disconnector is rated for operation up to 690 V AC or 250 V DC, with a rated insulation voltage of 1000 V.
What does 4P W MP mean in the product designation?
4P identifies the four-pole construction, while W MP denotes the withdrawable moving-part version designed for use with the corresponding fixed part of the SACE Emax assembly.
What is the short-time withstand rating of the E2N/MS 1250?
The E2N/MS 1250 has a rated short-time withstand current of 55 kA for 1 s and 42 kA for 3 s.
Trusted ABB Power Distribution Technology
ABB SACE Emax switch disconnectors provide dependable high-current switching and isolation for low-voltage distribution systems, combining proven Emax engineering with service-friendly withdrawable construction and robust electrical endurance.
