ABB SACE Tmax T1–T7 molded case circuit breakers provide overcurrent and short-circuit protection for low-voltage distribution systems. Seven frame sizes cover rated currents from 16 to 1600 A, with breaking capacities up to 200 kA at 415 V AC and a choice of thermomagnetic, magnetic-only or electronic trip units.
The ABB SACE Tmax T Molded Case Circuit Breaker (MCCB) series is designed for high-current low-voltage power distribution and industrial equipment protection. Covering current ratings from 320 A to 3,200 A, the series provides multiple frame sizes and breaking capacity options for demanding electrical installations. With thermal-magnetic and electronic trip unit configurations, robust circuit protection performance and a comprehensive range of accessories, Tmax T circuit breakers are suitable for main distribution systems, industrial switchboards and high-capacity electrical networks.
The Tmax T series provides protection against overloads and short-circuit faults through thermal-magnetic and electronic trip units. Different electronic protection configurations offer adjustable protection thresholds and functions to accommodate various electrical system requirements. Selected electronic trip units also support advanced protection coordination, including selectivity enhancement and early fault detection functions, helping improve system continuity and operational reliability.
Designed for high-current distribution applications, the Tmax T series offers different breaking capacity levels according to frame size, rated voltage and product configuration. Its compact construction combines high short-circuit interruption performance with flexible installation arrangements. Selected specialized versions also support demanding AC and DC applications beyond conventional low-voltage distribution requirements.
The Tmax T series includes three-pole and four-pole configurations in fixed-mounted versions. Depending on the selected model, operating mechanisms include manual and motorized operation, while compatible accessories support auxiliary signaling, remote control and electrical interlocking. Different connection arrangements and electronic trip unit options provide flexibility for integration into industrial switchboards and power distribution assemblies.
The ABB SACE Tmax T MCCB series is suitable for high-capacity electrical distribution and protection applications, including:
Main Power Distribution: Protection of incoming circuits in industrial switchboards.
Industrial Switchboards: Circuit protection in large-scale electrical distribution assemblies.
Motor Protection: Protection of high-current motor feeder circuits with compatible configurations.
Generator Protection: Circuit protection for selected generator distribution systems.
Energy and Infrastructure: Electrical protection in utility facilities, industrial infrastructure and large power distribution networks.
Special Electrical Systems: Selected AC/DC and photovoltaic applications requiring specialized voltage and protection configurations.
Rated Current: 320–3,200 A across the product family.
Product Range: Multiple Tmax T frame sizes, with specifications depending on generation and model.
Pole Configuration: 3P and 4P.
Trip Units: Thermal-magnetic and electronic versions.
Protection Functions: Overload and short-circuit protection, with additional functions available through selected electronic trip units.
Installation: Fixed-mounted configurations.
Operating Options: Manual and motorized operating mechanisms, depending on model.
Special Versions: PV, DC, high-voltage AC, variable-frequency and marine applications.
Standards: IEC 60947-2 and UL 489 for applicable product versions.
| Parameter | Specification |
| Product Series | ABB SACE Tmax T1–T7 |
| Rated Current | 16–1600 A across the range; T2 electronic options start at 1.6 A |
| Rated Operational Voltage | Up to 690 V AC |
| Breaking Capacity (Icu) | 16–200 kA at 415 V AC; dependent on frame and level |
| Poles | 3P / 4P |
| Installation | Fixed; plug-in T2–T5; withdrawable T4–T7 |
| Trip Units | TMF, TMD, TMA, TMG, MA/MF and PR-series electronic releases |
| Insulation / Impulse Voltage | Ui 800 V (T1–T3), 1000 V (T4–T7); Uimp 8 kV |
| Operating Temperature | −25 °C to +70 °C |
| Standard | IEC 60947-2 |
| Model / Class | Frame Current (Iu) | Rated Current Range (In) | Icu at 415 V |
| T1 B | 160A | 16 - 160A | 16 kA |
| T1 C | 160A | 16 - 160A | 25 kA |
| T1 N | 160A | 16 - 160A | 36 kA |
| T2 N | 160A | 1.6 - 160A | 36 kA |
| T2 S | 160A | 1.6 - 160A | 50 kA |
| T2 H | 160A | 1.6 - 160A | 70 kA |
| T2 L | 160A | 1.6 - 160A | 85 kA |
| T3 N | 250A | 63 - 250A | 36 kA |
| T3 S | 250A | 63 - 250A | 50 kA |
| T4 N | 250A | 20 - 250A | 36 kA |
| T4 S | 250A | 20 - 250A | 50 kA |
| T4 H | 250A | 20 - 250A | 70 kA |
| T4 L | 250A | 20 - 250A | 120 kA |
| T4 V | 250A | 20 - 250A | 200 kA |
| T5 N | 400 / 630A | 320 - 630A | 36 kA |
| T5 S | 400 / 630A | 320 - 630A | 50 kA |
| T5 H | 400 / 630A | 320 - 630A | 70 kA |
| T5 L | 400 / 630A | 320 - 630A | 120 kA |
| T5 V | 400 / 630A | 320 - 630A | 200 kA |
| T6 N | 630 / 800A | 630 - 800A | 36 kA |
| T6 S | 630 / 800A | 630 - 800A | 50 kA |
| T6 H | 630 / 800A | 630 - 800A | 70 kA |
| T6 L | 630 / 800A | 630 - 800A | 100 kA |
| T7 S | 800 / 1000 / 1250 / 1600A | 200 - 1600A | 50 kA |
| T7 H | 800 / 1000 / 1250 / 1600A | 200 - 1600A | 70 kA |
| T7 L | 800 / 1000 / 1250 / 1600A | 200 - 1600A | 120 kA |
| T7 V | 800 / 1000 / 1250 / 1600A | 200 - 1600A | 150 kA |
| Model | Thermal Current (Ith) | Operational Current (Ie) | Rated Voltage (AC) |
| T1D | 160 A | 125 A | 690 V |
| T3D | 250 A | 200 A | 690 V |
| T4D | 250 A | 250 A | 690 V |
| T5D | 400 A | 400 A | 690 V |
| T6D | 630 / 800 A | 630 / 800 A | 690 V |
| T7D | 1000 / 1250 / 1600 A | 1000 / 1250 / 1600 A | 690 V |
Jiahong brings together Schneider Electric and ABB products and sourcing services for your project, from individual items to coordinated product packages.
Tell us your requirements. We will reply with a suitable solution and quotation.
