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1SDA059049R1 ABB E2N/E MS 1250 3P 750V DC F HR Switch Disconnector
ABB 1SDA059049R1 E2N/E MS 1250 3P 750V DC F HR is a 1250 A three-pole fixed SACE Emax DC switch disconnector with rear horizontal terminals for industrial power distribution and isolation at up to 750 V DC.
£8,925.91
Why Choose the ABB E2N/E MS 1250 3P 750V DC F HR Switch Disconnector?
The ABB E2N/E MS 1250 3P 750V DC F HR, order code 1SDA059049R1, is a high-performance three-pole fixed DC switch disconnector from the ABB SACE Emax range, designed for dependable switching and isolation in demanding direct-current power distribution systems. With a rated uninterrupted current of 1250 A and rated operational voltage of 750 V DC, it provides a robust solution for industrial DC networks requiring reliable high-current isolation.
This E2N/E MS model uses the ABB SACE Emax E2 frame and is specifically configured for DC applications. Its three poles are suitable for series connection in 750 V DC systems, while the fixed construction and rear flat horizontal terminals (HR) provide a practical arrangement for permanent installation and connection to switchboard busbars.
The E2N/E MS 1250 provides a 1250 A rated operational and uninterrupted current, 1000 V rated insulation voltage and 12 kV rated impulse withstand voltage. Its rated short-time withstand current is 25 kA for 1 s, with the E2N/E MS platform providing enhanced 40 kA performance at 750 V DC under the specified ABB configuration.
Key Advantages
- Heavy-duty 1250 A DC switch disconnector for industrial power distribution.
- 750 V DC rated operational voltage for demanding direct-current networks.
- Three-pole configuration designed for high-voltage DC switching applications.
- Fixed installation for robust switchboard integration.
- Rear flat horizontal terminals for convenient rear power connections.
- 1000 V insulation voltage and 12 kV impulse withstand voltage.
- Part of the proven ABB SACE Emax DC switch-disconnector range.
Key Features
- ABB SACE Emax E2N/E MS series.
- 1250 A rated uninterrupted current.
- 750 V DC rated operational voltage.
- 3-pole configuration.
- Fixed (F) construction.
- Rear flat horizontal (HR) terminal connection.
- 1000 V rated insulation voltage.
- 12 kV rated impulse withstand voltage.
- 25 kA rated short-time withstand current for 1 s.
- N short-circuit performance level.
- Designed specifically for high-current DC switching and isolation.
- IEC-compliant construction for industrial power distribution.
Reliable 750 V DC Switching and Isolation
DC switch disconnectors provide a dependable means of switching and electrically isolating direct-current circuits for operational and maintenance requirements. Unlike AC systems, DC circuits have no natural current zero crossing, making purpose-designed switching equipment particularly important when safely interrupting and isolating high-voltage DC networks.
The ABB Emax /E MS range is engineered specifically for DC applications, with the three-pole configuration supporting operation at up to 750 V DC. The E2N/E MS 1250 combines this DC switching architecture with a fixed Emax construction and rear horizontal connections for integration into industrial distribution boards and switchgear.
Typical Applications
- Industrial DC power distribution systems.
- 750 V DC electrical networks.
- Railway and transportation DC distribution.
- DC busbar isolation and main switching.
- Industrial switchboards and distribution panels.
- Renewable-energy and power-conversion installations.
- High-current DC machinery and infrastructure systems.
Technical Specifications
| Series | SACE Emax |
|---|---|
| ABB order code | 1SDA059049R1 |
| Product group | 310513-New Emax |
| Product type | DC switch disconnector |
| Frame / sub-type | E2 |
| Short-circuit performance level | N |
| Version | Fixed (F) |
| Terminal connection | Rear flat horizontal (HR) |
| Number of poles | 3P |
| Current type | DC |
| Rated current (In) | 1250 A |
| Rated operational current (Ie) | 1250 A |
| Rated uninterrupted current (Iu) | 1250 A |
| Rated voltage (Ur) | 750 V |
| Rated operational voltage | 750 V DC |
| Rated insulation voltage (Ui) | 1000 V |
| Rated impulse withstand voltage (Uimp) | 12 kV |
| Rated short-time withstand current (Icw) | 25 kA for 1 s |
| Performance at 750 V DC | 40 kA Icw |
| Power loss | 70 W |
| Electrical durability | 15,000 cycles at up to 30 cycles per hour |
| Mechanical durability | 25,000 cycles at up to 60 cycles per hour |
| Standards | IEC |
| Dimensions (W × H × D) | 296 × 418 × 302 mm |
| Net weight | 45 kg |
| EAN | 8015644614089 |
Frequently Asked Questions
What is the ABB E2N/E MS 1250 3P 750V DC F HR used for?
It is a 1250 A DC switch disconnector designed for dependable switching and electrical isolation in industrial direct-current power distribution systems operating at up to 750 V DC.
What is the current rating of the ABB 1SDA059049R1?
The E2N/E MS 1250 has a rated operational and uninterrupted current of 1250 A.
What voltage is the ABB 1SDA059049R1 rated for?
The switch disconnector has a rated operational voltage of 750 V DC, a rated insulation voltage of 1000 V and a rated impulse withstand voltage of 12 kV.
What does 3P F HR mean on this ABB Emax switch disconnector?
3P identifies the three-pole configuration, F indicates fixed construction and HR denotes the rear flat horizontal terminal arrangement.
What short-time withstand current does the E2N/E MS 1250 provide?
The E2N/E MS has a standard rated short-time withstand current of 25 kA for 1 s, with ABB specifying 40 kA performance at 750 V DC for the E2N/E MS configuration.
Trusted ABB DC Power Distribution Technology
ABB SACE Emax /E MS switch disconnectors are engineered for demanding direct-current power distribution applications, combining high-current capability, purpose-designed DC switching performance and dependable electrical isolation for industrial and infrastructure systems.
