Description
ABB T5S630-PR221DS-LSI R630F F 3P
Technical Specifications:
- Frame Size: T5.
- Breaking Capacity: 630A (indicated by R630F).
- Poles: 3-Pole (3P).
- Trip Unit: PR221DS-LSI (LSI = Long-time, Short-time, Instantaneous protection).
- Rated Current: Up to 630A.
Functional Features:
- LSI Protection: Provides adjustable long-time overload, short-time delay, and instantaneous short-circuit protection.
- Electronic Trip Unit: Offers precise, adjustable protection curves and local measurement display.
- High Breaking Capacity: Safely interrupts high fault currents without damage.
Application Scenarios:
Widely used as main incoming or feeder breakers in industrial power distribution panels, commercial buildings, and infrastructure electrical systems.
Performance Parameters:
- Breaking Capacity: High short-circuit breaking capacity suitable for demanding applications.
- Selectivity: Full selectivity with downstream T1-T4 breakers for optimized system coordination.
Material Composition:
Thermoplastic insulated housing with silver-alloy contacts and advanced arc-chute design for safe interruption.
Structural Features:
Compact, space-saving design with plug-in or fixed mounting options. Features a front-mounted display for parameter setting and measurement reading.
Working Principle:
The electronic trip unit continuously monitors current through internal CTs. Upon detecting an overload or short-circuit condition, it processes the signal against the configured LSI curves and actuates the mechanical trip mechanism to open the contacts.
Installation Requirements:
Ensure proper torque on busbar or cable connections. Maintain adequate clearance for arc flash safety and heat dissipation.
Usage Precautions:
Set protection parameters according to the coordinated study. Perform primary injection testing to verify trip unit operation before energizing the system.
