ABB Tmax XT1C 160 Molded Case Circuit Breaker TMD 160A 4P Fixed

The ABB Tmax XT1C 160 TMD molded case circuit breaker, reference 1SDA067410R1, is a 4-pole, 160 A protection device designed for the protection and switching of electrical distribution circuits. It incorporates a TMD thermal-magnetic trip unit with adjustable thermal protection between 112 and 160 A and a fixed magnetic trip at 1600 A, providing protection against overloads and short circuits.

This version belongs to the ABB SACE Tmax XT family and uses the XT1 frame in fixed version, with front connections. Its ultimate breaking capacity Icu reaches 25 kA at 380/415 V AC, while at 220/230 V AC it reaches up to 40 kA. The fourth pole provides neutral protection at 100% of the phase current, identified by ABB as InN=100%.

ABB Tmax XT1C molded case circuit breaker

The Tmax XT range is developed for power distribution and protection in electrical panels for industrial, commercial and infrastructure installations. The XT1C 160 model combines compact dimensions with a rated current of 160 A and the protection performance typical of a molded case circuit breaker.

The fixed version is especially suitable for installations where the circuit breaker remains permanently mounted in the electrical panel. The front terminals make it easy to connect conductors or busbars according to ABB’s intended configuration.

4 poles with 100% protected neutral

The ABB 1SDA067410R1 has four poles and is configured with InN=100%. This means that the neutral pole is rated for the same nominal current as the phase poles.

This configuration is especially suitable for three-phase networks with neutral where simultaneous opening of the four conductors is required and the neutral must be protected at 100% of the rated current.

TMD thermal-magnetic trip unit

The circuit breaker incorporates a TMD trip unit, designed to provide protection against two main types of electrical fault:

• Overloads: through adjustable thermal tripping.
• Short circuits: through fixed instantaneous magnetic tripping.

For this reference, the thermal protection can be adjusted between 0.7 and 1 times the rated current, that is, between 112 and 160 A. This allows the circuit breaker to be more precisely adapted to the characteristics of the circuit it must protect.

The magnetic threshold is fixed at 1600 A, equivalent to 10 times the circuit breaker rated current, enabling fast operation in the event of high short-circuit currents.

Overload protection

The thermal part of the TMD release monitors the current flowing through the circuit. When a current above the set value is maintained for a certain period of time, the circuit breaker trips to disconnect the installation and protect conductors and equipment from the thermal effects of an overload.

The adjustment range of 112 to 160 A makes it possible to adapt the setting to the design conditions of the installation, always in accordance with the conductor cross-section, the load and the protection criteria established in the electrical project.

Fixed magnetic trip at 1600 A

In the event of a short circuit, magnetic protection acts quickly when the set threshold is reached. In the ABB Tmax XT1C of this reference, the magnetic trip is fixed at 1600 A.

This function helps limit the thermal and electrodynamic effects produced by high fault currents and, together with thermal tripping, forms the basis of the circuit breaker’s thermal-magnetic protection.

Breaking capacity up to 25 kA at 415 V

The ABB XT1C 160 offers different breaking capacities depending on the installation voltage. ABB specifies the following ultimate breaking capacity Icu values for this version:

• 220/230 V AC: 40 kA.
• 380/415 V AC: 25 kA.
• 440 V AC: 25 kA.
• 500 V AC: 18 kA.
• 690 V AC: 4 kA.

The circuit breaker must be selected by checking that the breaking capacity is suitable for the prospective short-circuit current at the specific point of the installation.

Operating voltage up to 690 V AC

The circuit breaker is designed to operate with a rated operational voltage of up to 690 V AC. ABB also specifies a rated insulation voltage Ui of 800 V and an impulse withstand voltage Uimp of 8 kV.

These characteristics make the Tmax XT1C suitable for a wide range of low-voltage distribution networks, always respecting the breaking performance corresponding to each voltage.

Fixed mounting with front terminals

The F F designation of this model indicates a fixed version with front terminals. This format is designed for permanent mounting of the circuit breaker inside the electrical panel and allows connections to be made from the front of the device.

The fixed configuration provides a robust solution for main panels, sub-distribution boards, machinery and distribution systems where a plug-in or withdrawable version is not required.

Applications of the ABB Tmax XT1C 160

Thanks to its electrical characteristics and 160 A rated current, this circuit breaker can be used in numerous power distribution applications, including:

• Low-voltage main distribution boards.
• Sub-distribution boards.
• Industrial installations.
• Commercial and tertiary buildings.
• Electrical infrastructure installations.
• Line and feeder protection.
• Machine and process panels.
• Three-phase installations with neutral conductor.

Technical characteristics of the ABB 1SDA067410R1

• Brand: ABB.
• Reference: 1SDA067410R1.
• Family: SACE Tmax XT.
• Model: XT1C 160 TMD 160-1600 4P F F InN=100%.
• Type: molded case circuit breaker.
• Frame size: XT1.
• Rated current In: 160 A.
• Number of poles: 4.
• Neutral protection: 100% of rated current.
• Trip unit: TMD thermal-magnetic.
• Thermal setting: 112-160 A.
• Relative thermal setting: 0.7-1 x In.
• Magnetic trip: fixed at 1600 A.
• Icu at 220/230 V AC: 40 kA.
• Icu at 380/415 V AC: 25 kA.
• Icu at 440 V AC: 25 kA.
• Icu at 500 V AC: 18 kA.
• Icu at 690 V AC: 4 kA.
• Maximum rated operational voltage: 690 V AC.
• Rated insulation voltage Ui: 800 V.
• Impulse withstand voltage Uimp: 8 kV.
• Standard: IEC 60947-2.
• Installation type: fixed.
• Terminal type: front.
• Approximate height: 130 mm.
• Approximate width: 101.2 mm.
• Approximate depth: 70 mm.
• Approximate weight: 1.3 kg.

Compact design for distribution panels

The ABB Tmax XT1 frame is designed to deliver high protection performance in a reduced footprint. The four-pole version has approximate dimensions of 130 x 101.2 x 70 mm, making it easy to integrate into panels where space efficiency is important.

The Tmax XT family also offers a wide range of mechanical and electrical accessories that allow the circuit breaker to be adapted to different signaling, operating and monitoring needs.

Reliable protection for installations up to 160 A

The ABB Tmax XT1C 160 TMD 1SDA067410R1 circuit breaker combines overload and short-circuit protection, four poles with 100% protected neutral, a thermal setting between 112 and 160 A and a breaking capacity of 25 kA at 380/415 V.

Its fixed version, front connections and compact XT1 frame make it an especially suitable solution for distribution electrical panels that require a 160 A molded case circuit breaker with adjustable thermal-magnetic protection.

Important: the selection and setting of the circuit breaker must take into account the design current, the cross-section and capacity of the conductors, the expected short-circuit current, coordination with the rest of the protection devices and the general characteristics of the installation.