ST420B1-1 Microprocessor Line Protection Relay | Feeder Circuit Protection
ST420B1-1 Microprocessor Line Protection Relay | Feeder Circuit Protection
Description
ST420B1-1 Microprocessor Line Protection Relay
The ST420B1-1 series is a microprocessor-based line protection device with integrated protection body and display module. Designed for feeder circuits with rated frequency 50/60Hz and rated voltage below 1kV.
Key Features
- Integrated protection body with built-in display module
- Suitable for feeder circuits rated 50/60Hz, below 1kV
- Includes dedicated current transformer (CT)
- Includes zero-sequence current transformer for ground fault detection
- Compact, reliable microprocessor-based design
- OEM/ODM available — Suzhou manufacturer
Applications
Ideal for low voltage switchgear panels, power distribution boards, and industrial feeder circuit protection.
Request a quote or technical datasheet — contact Wanlong Electric today.
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.