1SDA101907R1 ABB XT7D 1250 3P Fixed Switch-Disconnector

Why Choose the ABB XT7D 1250 3P 1SDA101907R1 Switch-Disconnector?

The ABB 1SDA101907R1 is a SACE Tmax XT7D switch-disconnector designed for dependable switching and isolation in high-current low-voltage electrical distribution systems. Rated at 1250 A, this three-pole device provides a robust means of disconnecting three-phase circuits for operational switching, maintenance and electrical isolation.

Unlike an XT7 circuit breaker equipped with an Ekip electronic protection release, the XT7D is configured as a moulded case switch (MCS). Its primary purpose is switching and isolation rather than automatic overload or short-circuit protection, so suitable protective devices should be provided elsewhere in the electrical installation where required.

The 1SDA101907R1 has a fixed three-pole configuration with front terminals and a lever operating mechanism. ABB rates the device at 1250 A for both AC-22A and AC-23A utilisation duties at 415/440 V AC and 690 V AC, making it suitable for demanding industrial, commercial and infrastructure distribution assemblies.

Key Advantages

• High-current 1250 A switch-disconnector for demanding low-voltage distribution systems.
• Provides dependable switching and isolation of three-phase electrical circuits.
• Three-pole configuration for three-phase applications.
• Rated at 1250 A for AC-22A and AC-23A utilisation at 415/440 V AC and 690 V AC.
• 20 kA short-time withstand current for 1 s.
• Fixed construction simplifies integration into switchboards and distribution assemblies.
• Front terminals provide a practical main-circuit connection arrangement.
• Lever operating mechanism provides straightforward local switching.
• Part of ABB’s established SACE Tmax XT low-voltage platform.

Key Features

• ABB SACE Tmax XT7D switch-disconnector.
• 1250 A rated current.
• Three-pole configuration.
• XT7 frame size.
• MCS moulded case switch configuration.
• Fixed installation.
• Front main-circuit terminals.
• Lever operating mechanism.
• 1250 A AC-22A rating at 415/440 V AC.
• 1250 A AC-22A rating at 690 V AC.
• 1250 A AC-23A rating at 415/440 V AC.
• 1250 A AC-23A rating at 690 V AC.
• 20 kA short-time withstand current for 1 s.
• Designed for switching and isolation rather than automatic overcurrent protection.
• IEC product configuration.

High-Current Switching and Electrical Isolation

The ABB XT7D 1250 is designed to provide controlled switching and isolation of high-current low-voltage circuits. Its 1250 A AC-22A and AC-23A operational ratings at both 415/440 V AC and 690 V AC make it suitable for demanding distribution and switching duties, while its 20 kA short-time withstand capability for 1 s supports use within robust electrical distribution architectures.

As a moulded case switch-disconnector, the 1SDA101907R1 should not be confused with an XT7 protective circuit breaker fitted with an Ekip trip unit. Its principal function is switching and isolation; overload and short-circuit protection should therefore be provided by appropriately selected protective equipment elsewhere in the electrical system where required.

Typical Applications

• Main low-voltage switchboards and distribution boards.
• High-current circuit isolation.
• Industrial electrical distribution systems.
• Commercial and infrastructure power installations.
• Manufacturing plants and process facilities.
• Incoming and outgoing distribution circuits.
• Machinery and plant isolation arrangements.
• Three-phase systems requiring a 1250 A fixed switch-disconnector.