1SDA073432R1 ABB E1.2N/MS 630 4p F F Switch Disconnector

Why Choose the ABB E1.2N/MS 630 4p F F Switch Disconnector?

The ABB E1.2N/MS 630 4p F F, order code 1SDA073432R1, is a fixed SACE Emax 2 switch disconnector designed for dependable switching and isolation in low-voltage power-distribution systems. Based on ABB's compact E1.2 frame, this four-pole unit combines a 630 A rated uninterrupted current, N performance level and front main-circuit terminals for straightforward switchboard integration.

The E1.2N/MS is a switch-disconnector rather than an Emax 2 air circuit breaker equipped with an Ekip electronic protection trip unit. Its purpose is circuit switching and isolation within a suitably protected electrical system, allowing three-phase and neutral conductors to be disconnected while associated protective devices provide the required overcurrent and short-circuit protection.

Designed for fixed applications up to 690 V AC, the E1.2N/MS 630 provides a rated short-time withstand current of 50 kA for 1 s. Its four-pole construction, compact E1.2 frame and front connection arrangement make it well suited to industrial, commercial and infrastructure distribution assemblies requiring reliable 630 A isolation.

Key Advantages

• 630 A Emax 2 switch disconnector for dependable low-voltage switching and isolation.
• Four-pole configuration supports switching of three phases and neutral.
• N performance level provides a 50 kA short-time withstand current for 1 s.
• Fixed installation provides a robust permanent switchboard arrangement.
• Front main-circuit terminals support straightforward conductor and busbar connection.
• Designed for fixed applications at up to 690 V AC.
• Compact E1.2 construction helps optimise switchboard space.

Key Features

• ABB SACE Emax 2 E1.2N/MS series.
• 630 A rated uninterrupted current.
• 4-pole configuration.
• Switch-disconnector function.
• N performance level.
• Fixed mounting version.
• Front main-circuit terminals.
• 50 kA rated short-time withstand current for 1 s.
• Designed for fixed applications up to 690 V AC.
• Four-pole construction suitable for systems requiring neutral switching.
• Designed for switching and isolation without an integral Ekip electronic protection trip unit.
• Part of ABB's SACE Emax 2 low-voltage switching platform.

Reliable Four-Pole Switching and Isolation

Switch disconnectors provide a defined means of switching and isolating electrical circuits while operating alongside dedicated protective devices within the distribution system. The ABB E1.2N/MS 630 combines a 630 A continuous-current rating with four-pole construction, making it suitable for distribution systems where the neutral conductor must be switched together with the three phase conductors.

Its N performance level provides a 50 kA short-time withstand current for 1 s, enabling the switch disconnector to withstand substantial fault current for the specified duration while the associated protection system clears the fault. Combined with fixed mounting, front terminals and the compact E1.2 frame, the 1SDA073432R1 provides a practical isolation solution for industrial, commercial and infrastructure low-voltage distribution assemblies.

Typical Applications

• Main and sectional isolation in low-voltage switchboards.
• Industrial power-distribution systems.
• Transformer secondary distribution assemblies.
• Four-wire three-phase systems requiring neutral switching.
• Manufacturing and process-industry switchboards.
• Commercial building electrical distribution.
• Infrastructure and utility distribution panels.
• Feeders requiring fixed 630 A four-pole switching and isolation.