1SDA054683R1 ABB MA 100-1400 T4 4-Pole Magnetic Trip Unit

Why Choose the ABB 1SDA054683R1 MA 100-1400 Magnetic Trip Unit?

The ABB 1SDA054683R1 is an MA magnetic-only trip unit designed for compatible ABB SACE Tmax T4 moulded case circuit breakers. Rated at 100 A, this four-pole protection release provides instantaneous magnetic short-circuit protection for applications where overload protection is provided separately or is not required from the circuit breaker trip unit.

The MA release provides an adjustable instantaneous magnetic trip threshold (I3) of 600...1400 A. This allows the magnetic protection level to be selected to suit the characteristics of the protected circuit, making the release particularly useful in applications such as motor circuits where separate overload protection may be employed.

Designed for the ABB SACE Tmax T4 platform, the 1SDA054683R1 has a four-pole configuration and is suitable for compatible AC and DC applications. It is supplied as a magnetic protection release for integration with compatible Tmax T4 breaker hardware and is therefore a circuit breaker component rather than a complete standalone MCCB.

Key Advantages

• Genuine ABB MA magnetic trip unit.
• 100 A rated current for compatible ABB Tmax T4 circuit breakers.
• Adjustable instantaneous magnetic trip threshold of 600...1400 A.
• Provides rapid protection against high short-circuit currents.
• Magnetic-only design suits applications where overload protection is provided separately.
• Suitable for compatible AC and DC circuit breaker applications.
• Four-pole configuration for compatible Tmax T4 assemblies.
• Modular design for combination with suitable ABB Tmax T4 breaker hardware.

Key Features

• ABB MA magnetic-only protection release.
• 100 A rated current (In).
• Four-pole configuration.
• Instantaneous magnetic short-circuit protection.
• 600...1400 A adjustable instantaneous magnetic threshold (I3).
• Magnetic adjustment range of approximately 6...14 × In.
• Suitable for compatible AC-DC applications.
• Designed for compatible ABB SACE Tmax T4 MCCB hardware.
• No integral thermal overload protection.
• Suitable for circuits using separate overload protection where required.

Adjustable Magnetic Short-Circuit Protection for ABB Tmax T4

Unlike a thermomagnetic TMA release, the MA release is magnetic only. It is designed to respond rapidly when current reaches the selected instantaneous short-circuit threshold rather than providing time-dependent thermal overload protection. On the 1SDA054683R1, the I3 threshold is adjustable from 600 A to 1400 A, corresponding to approximately six to fourteen times the 100 A rated current.

This protection characteristic makes the MA release suitable for applications where overload protection is handled by another device, such as a dedicated motor overload relay. The 1SDA054683R1 is the 100 A four-pole MA release for compatible ABB Tmax T4 hardware; because it is not a complete MCCB, the final circuit breaker's voltage ratings and short-circuit breaking capacity depend on the compatible Tmax T4 breaking part with which it is assembled.

Typical Applications

• ABB Tmax T4 moulded case circuit breaker assemblies.
• Motor circuit short-circuit protection.
• Circuits using separate overload relays or overload protection devices.
• Industrial machinery and motor control systems.
• Industrial low-voltage electrical distribution systems.
• Four-pole electrical distribution applications.
• Compatible AC and DC circuits requiring magnetic protection.
• OEM switchgear and electrical control panel assemblies.