The Terasaki XS Series is one of its core, most widely used standard air circuit breakers. Renowned for high reliability, flexible configuration, and powerful protection features, it holds a dominant position, especially in industrial, building, and marine power systems.
Terasaki XS Series Core Features
• Application Fields: Widely used in main distribution boards, sub-distribution boards in factories, buildings, and infrastructure, as well as protection switches for large equipment like motors and transformers. It is a standard configuration in marine power systems.
• Technical Core: Commonly utilizes advanced solid-state electronic trip units, providing high-precision protection characteristics and adjustable parameters.
• Modular Design: Can be equipped with various functional modules (auxiliary contacts, shunt releases, undervoltage releases, etc.) to meet diverse control needs.
• High Breaking Capacity: Offers multiple models ranging from standard to very high breaking capacities, enabling the safe interruption of large short-circuit currents.
• Frame Ratings: Covers a medium current range. Common frame ratings include 100A, 250A, 400A, and 800A.
Most Common and Representative Model Combinations:
1. XS100 Frame Series (100A Frame)
This is the most commonly used branch circuit protection breaker.
◦ XS100ns: Standard type, solid-state trip unit, standard breaking capacity.
Example: TERASAKI XS100ns 3p 50a
◦ XS100ss: Standard type, solid-state trip unit, enhanced breaking capacity.
◦ XS100hs: Standard type, solid-state trip unit, high breaking capacity.
2. XS250 Frame Series (250A Frame)
Used for larger branch circuits or as the main switch for small systems.
◦ XS250ns: 250A frame, standard breaking capacity, solid-state trip unit.
◦ XS250ss: 250A frame, enhanced breaking capacity, solid-state trip unit.
◦ XS250hs: 250A frame, high breaking capacity, solid-state trip unit.
3. XS400 Frame Series (400A Frame)
Used for main distribution in medium-sized systems or protection of high-capacity equipment.
◦ XS400ns: 400A frame, standard breaking capacity, solid-state trip unit.
◦ XS400ss: 400A frame, enhanced breaking capacity, solid-state trip unit.
◦ XS400hs: 400A frame, high breaking capacity, solid-state trip unit.
4. XS800 Frame Series (800A Frame)
Used for main distribution protection in large systems.
◦ XS800ns: 800A frame, standard breaking capacity, solid-state trip unit.
◦ XS800ss: 800A frame, enhanced breaking capacity, solid-state trip unit.
◦ XS800hs: 800A frame, high breaking capacity, solid-state trip unit.