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1SDA058938R1 ABB E1N/MS 1250 4-Pole Fixed Switch Disconnector
ABB 1SDA058938R1 is a SACE Emax E1N/MS 1250 A four-pole fixed switch disconnector with rear flat horizontal terminals designed for reliable switching and isolation in low-voltage power distribution systems.
£7,411.55
Why Choose the ABB 1SDA058938R1 E1N/MS 1250 Switch Disconnector?
The ABB 1SDA058938R1 is a SACE Emax E1N/MS circuit breaker switch disconnector designed for dependable switching and isolation in low-voltage electrical distribution systems. Part of the established ABB SACE Emax New Emax series, this four-pole fixed unit provides a rated current of 1250 A for industrial, commercial and infrastructure power distribution applications.
The E1N/MS 1250 combines ABB's robust E1 frame with an N short-circuit performance level, providing reliable operation in demanding switchboard environments. Its four-pole configuration enables simultaneous switching of all four conductors, while the fixed construction provides a secure permanent installation within compatible low-voltage switchgear.
The 1SDA058938R1 features rear flat horizontal terminals and supports operational voltages of 690 V AC and 250 V DC. With a rated insulation voltage of 1000 V, rated impulse withstand voltage of 12 kV and short-time withstand current of 50 kA for 1 s, it provides robust switching and isolation performance for critical power distribution systems.
Key Advantages
- Heavy-duty ABB SACE Emax E1N/MS switch disconnector for low-voltage power distribution.
- 1250 A rated current for demanding industrial and commercial installations.
- Four-pole configuration for applications requiring four-conductor switching and isolation.
- Fixed execution for secure permanent switchboard installation.
- Rear flat horizontal terminals support practical busbar and switchgear connections.
- High 50 kA short-time withstand current for 1 s.
Key Features
- ABB SACE Emax E1N/MS series.
- 1250 A rated uninterrupted current.
- 4-pole configuration.
- 690 V AC / 250 V DC rated operational voltage.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 50 kA short-time withstand current for 1 s.
- 36 kA short-time withstand current for 3 s.
- Fixed execution with rear flat horizontal terminals.
- Mechanical durability of 25,000 operating cycles.
Reliable Switching and Isolation for Power Distribution
The ABB SACE Emax E1N/MS provides a dependable means of switching and isolating high-current low-voltage electrical circuits. Its 1250 A continuous current capability and robust short-time withstand performance make it suitable for main distribution boards and industrial switchgear where reliable circuit separation is required for operation and maintenance.
The fixed four-pole construction provides a permanent switching and isolation point within the electrical distribution assembly, while the rear flat horizontal terminals facilitate integration with switchboard conductors and busbar systems. These characteristics make the 1SDA058938R1 a practical solution for demanding low-voltage power distribution installations.
Typical Applications
- Industrial low-voltage switchboards and distribution panels.
- Main incoming and outgoing electrical isolation.
- Manufacturing and process industry power distribution.
- Commercial building electrical distribution systems.
- Generator and transformer distribution installations.
- Four-pole switchgear requiring fixed high-current isolation.
Technical Specifications
| Series | SACE Emax / New Emax |
|---|---|
| Order code | 1SDA058938R1 |
| Product group | 310513-New Emax |
| Product type | Switch disconnector |
| Frame / sub-type | E1 |
| 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 | 4 |
| 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 |
| Short-time withstand current (Icw, 1 s) | 50 kA |
| Short-time withstand current (Icw, 3 s) | 36 kA |
| Power loss | 150 W |
| Execution | Fixed |
| Terminal connection | Rear flat horizontal |
| Electrical durability | 10,000 cycles |
| Electrical operating frequency | 30 cycles per hour |
| Mechanical durability | 25,000 cycles |
| Mechanical operating frequency | 60 cycles per hour |
| Standards | IEC |
| Dimensions (W × H × D) | 386 × 418 × 302 mm |
| Net weight | 50 kg |
| EAN | 8015644612979 |
Frequently Asked Questions
What is the ABB 1SDA058938R1 used for?
The ABB 1SDA058938R1 is a 1250 A four-pole SACE Emax switch disconnector designed for switching and isolation in low-voltage electrical distribution systems.
What is the rated current of the ABB 1SDA058938R1?
The E1N/MS 1250 has a rated current, rated operational current and rated uninterrupted current of 1250 A.
How many poles does the ABB 1SDA058938R1 have?
The 1SDA058938R1 has a four-pole configuration, making it suitable for electrical distribution systems requiring simultaneous four-conductor switching and isolation.
Is the ABB 1SDA058938R1 fixed or withdrawable?
The 1SDA058938R1 is a fixed switch disconnector with rear flat horizontal terminals for permanent installation within compatible ABB SACE Emax switchgear.
What is the short-time withstand rating of the ABB 1SDA058938R1?
The E1N/MS 1250 has a short-time withstand current of 50 kA for 1 s and 36 kA for 3 s.
Trusted ABB Switching for Critical Power Systems
ABB SACE Emax E1N/MS switch disconnectors are engineered for dependable switching and isolation in low-voltage distribution systems, combining robust electrical performance, durable operation and practical fixed switchboard integration.
