ABB SACE TMAX T5 1SDA054333R1

1. Product Overview

The ABB Tmax T5 moulded case circuit breaker (MCCB) is a low-voltage power distribution protection device manufactured by ABB SACE, belonging to the Tmax series of moulded case circuit breakers and compliant with the IEC 60947-2 standard. Among the T4, T5 and T6 models of the Tmax series, this circuit breaker delivers an optimal balance of performance and compact dimensions.

2. Main Technical Parameters

Parameter Item	Specification Value
Rated Insulation Voltage (Ui)	1000V
Rated Operational Voltage (Ue)	690/400V
Rated Current (In)	400A
Frequency	50-60Hz
Breaking Capacity (415V AC)	200 kA
Breaking Capacity (690V AC)	80 kA
Rated AC Voltage	1150V
Rated DC Voltage	1000V
Mechanical Endurance	Approx. 15,000 operations (3 operations per day)
Electrical Endurance	Approx. 15,000 operations

3. Product Features

• High Breaking Capacity: It features a breaking capacity of up to 200kA at 415V AC and 80kA at 690V AC, ensuring reliable fault current interruption under various low-voltage working conditions.
• Compact Structure Design: The T4, T5 and T6 models adopt a unified depth of 103.5mm and support universal standard accessories, saving installation space and improving equipment integration.
• Flexible Trip Unit Selection: Compatible with both thermal-magnetic and electronic trip units, enabling flexible application in AC and DC power supply systems.
• Interchangeable Trip Units: The modular trip unit design facilitates convenient system upgrade and replacement, effectively reducing enterprise inventory and maintenance costs.
• Multi-level Protection Performance: The electronic trip unit integrates L (long time delay), S (short time delay), I (instantaneous) and other protection functions, realizing selective hierarchical protection and improving the safety and stability of the power distribution system.
• Complete Accessory Portfolio: Equipped with a full range of supporting accessories including undervoltage trip units, shunt trip units and more to meet diverse application and control requirements.

4. Structure and Composition

4.1 Basic Structure

• Adopts professional moulded case structure with high mechanical strength and insulation performance
• Available in 3-pole and 4-pole configurations
• Supports fixed-type and plug-in installation methods

4.2 Trip Unit Types

• Thermal-magnetic Trip Unit: TMA series and other mainstream models
• Electronic Trip Unit: PR221DS, PR222DS, PR231 and other series models

4.3 Trip Unit Protection Functions

• L Function: Long time delay overload protection
• S Function: Short time delay short-circuit protection
• I Function: Instantaneous short-circuit protection
• Partial models support combined LSI and LSIG protection modes

4.4 Accessory System

The complete supporting accessory system covers undervoltage trip units, shunt trip units, auxiliary contacts, wiring terminals and other core components to realize diversified electrical control and system expansion functions.

5. Application Fields

• AC Power Distribution System: Suitable for 400V/690V low-voltage AC power distribution systems for industrial and commercial use
• DC Application Scenarios: Adaptable to 1000V DC power supply systems, meeting high-voltage DC distribution demands
• Motor Protection: Professional protection and control for various industrial motor equipment, preventing overload and short-circuit faults
• Photovoltaic Power System: The dedicated Tmax PV series is specially designed for photovoltaic power generation scenarios, adapting to photovoltaic power generation characteristics
• Marine Electrical System: Low-voltage shock-resistant models are applicable to marine electrical distribution systems with strict environmental requirements
• General Industrial Applications: Widely used in various industrial workshop low-voltage power distribution, equipment power supply and other scenarios
• Wind Power Industry: ABB Tmax series products are widely applied in offshore wind farms and other new energy power generation projects

6. Installation and Maintenance

6.1 Pre-installation Requirements

• Verify that the circuit breaker parameters are compatible with the electrical system and meet the actual application specifications
• Cut off the power supply completely before all installation and maintenance operations to ensure construction safety
• Install the equipment in a dry and ventilated position, reserve reasonable heat dissipation and operation gaps
• Complete wiring construction in strict accordance with electrical system drawings and official wiring specifications

6.2 Installation Methods

• Fixed-type installation
• Plug-in installation (applicable to T4 and T5 models)
• Draw-out installation (applicable to T4, T5, T6 and T7 models)

6.3 Wiring Methods

• Front panel wiring
• Rear panel wiring
• Cable or insulated busbar connection

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