ST31CS Series Intelligent MCCB Trip Unit
ST31CS Series Intelligent MCCB Trip Unit
This is a custom-made product. Please contact us to discuss your specifications and receive a quotation.
Description
ST31CS Series – Intelligent MCCB Trip Unit
Overview
The ST31CS Series is an intelligent protection core unit designed for use with the C&S WinBreak1 molded case circuit breaker (MCCB). It provides comprehensive distribution protection, safeguarding circuits and power equipment against overload, short-circuit, and ground fault hazards.
Protection Functions
- Long-time overload protection
- Short-time short-circuit protection
- Instantaneous short-circuit protection
- Ground fault protection
- Overload pre-alarm
- Neutral conductor protection
- Phase unbalance protection
Auxiliary Functions
- Fault trip
- Overload pre-alarm
- Ground fault alarm
Communication
- MODBUS protocol
User Interface
- Power indicator
- Pre-alarm indicator
- Trip function test port
- Accessory communication port
- LCD type: parameters set via keypad with LCD display; historical fault records accessible
Rated Parameters
- Power supply: CT self-powered; operates when 3-phase current > 0.2In or single-phase current > 0.4In
- Frame rating: 250A, 630A
- Rated current: 125A – 630A
Standards
GB14048.2 | IEC60947 | GB/T22710
Care
To maintain the beauty and integrity of your purchase, we recommend treating it with care. Simple maintenance practices, such as gentle washing and proper storage, can effectively preserve the longevity of your favorites. We encourage you to refer to the care instructions included with each item, designed to help you keep your purchase in top condition.
Design
Our dedication to excellence extends beyond materials; it encompasses the artistry and craftsmanship illustrated in every piece we create.