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ABB 1SDA055413R1 molded case circuit breaker
1. Product Description
The ABB 1SDA055413R1 is a high-performance molded case circuit breaker (MCCB) designed for low-voltage power distribution systems, dedicated to providing reliable overcurrent protection, short-circuit protection, and overload protection for electrical equipment and circuits. As a core component in low-voltage 配电 networks, it can quickly trip to cut off the circuit when abnormalities such as overcurrent, short circuit, or long-term overload occur in the system, effectively preventing damage to electrical equipment and avoiding fire hazards caused by circuit faults.
The circuit breaker adopts a rugged molded case structure (made of high-temperature-resistant, flame-retardant engineering plastics) and integrates advanced current-sensing technology, ensuring stable operation in harsh industrial environments. It supports manual or electrical operation modes and is compatible with ABB's low-voltage 配电 accessories (such as auxiliary contacts, shunt trips), enabling flexible expansion of control and monitoring functions. With its compact design and wide current rating range, it is widely used in industrial plants, commercial buildings, and infrastructure projects, providing a safe and efficient protection solution for low-voltage power distribution systems.
2. Detailed Parameters
3. Advantages & Features
- High Breaking Capacity & Reliable Protection
With a 50 kA rated breaking capacity (Icu) at AC 415 V, it can safely interrupt large short-circuit currents, adapting to high-power load scenarios (e.g., industrial motors, large-scale electrical equipment). The Class 5 tripping characteristic ensures accurate and timely protection—overload protection prevents long-term overheating of circuits, while instantaneous short-circuit protection quickly responds to severe faults (≤0.1 seconds), minimizing fault impact.
- Rugged Industrial-Grade Design
The molded case is made of flame-retardant engineering plastics (UL94 V-0 grade), which is high-temperature resistant (up to +60℃ operating temperature) and impact resistant, avoiding case deformation or combustion in harsh environments. The IP40 protection rating effectively prevents dust intrusion, ensuring stable operation in dusty industrial workshops or commercial building electrical rooms.
- Flexible Configuration & Expansion
Supports optional auxiliary accessories, such as auxiliary contacts (for remote status monitoring), shunt trips (for remote circuit breaking), and undervoltage releases (for undervoltage protection), meeting diverse system control and monitoring needs. The compatible conductor cross-section (16-50 mm²) allows connection to large-diameter cables, adapting to high-current wiring requirements.
- Easy Installation & Maintenance
The compact design saves panel space; fixed mounting supports both panel-mounted and DIN rail-mounted methods, simplifying installation in low-voltage switchgear. The transparent case (optional) allows visual inspection of internal components, and the detachable terminal cover facilitates wiring and maintenance without disassembling the entire device.
- Wide Temperature Adaptability
Operates normally in -25℃ to +60℃ ambient temperature, suitable for cold regions (e.g., outdoor electrical cabinets in northern areas) and high-temperature industrial environments (e.g., metallurgical workshops). Derating guidelines are clearly provided for temperatures above +40℃, ensuring protection accuracy under extreme conditions.
4. Application Fields
- Industrial Low-Voltage Distribution
Used in factories (e.g., automobile manufacturing, electronics plants) to protect power distribution circuits for high-power equipment—such as motor control circuits (3-phase AC motors), heating systems, and production line electrical networks. It serves as the main or branch circuit protector in low-voltage switchgear, ensuring safe operation of production equipment.
- Commercial & Public Buildings
Deployed in shopping malls, office buildings, and hospitals to protect the main power input of electrical distribution panels, air conditioning systems, elevator power circuits, and lighting networks. The IP40 protection and stable tripping performance adapt to the dense wiring and multi-load environment of public buildings.
- Infrastructure & Renewable Energy
Applied in solar power plants (low-voltage inverter output circuits), wind farm auxiliary power systems, and urban water supply pump stations. It protects the power supply circuits of renewable energy equipment and auxiliary facilities, withstanding outdoor temperature fluctuations and ensuring continuous energy supply.
- Data Centers & Critical Facilities
Used in data center low-voltage distribution systems to protect server rack power circuits, UPS (uninterruptible power supply) output circuits, and cooling system power circuits. The reliable short-circuit protection prevents power outages caused by circuit faults, ensuring the stable operation of critical IT equipment.
- Residential & Commercial Complexes
Installed in the main electrical distribution box of high-rise residential buildings or commercial complexes to protect the power supply of each floor or each unit, preventing overload or short circuit of household electrical appliances (e.g., air conditioners, electric water heaters) from affecting the entire building's power supply.
The structure and details of the product:

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