Description
The SMO-N series molded case circuit breakers are advanced electrical protection devices designed for AC circuits with frequencies of 50/60 Hz. With a rated working voltage up to 690V AC and a rated current range from 16A to 630A, this series is ideal for industrial, commercial, and residential applications. It provides reliable distribution of electrical energy while safeguarding circuits against overload, short-circuit, and undervoltage faults. Additionally, it supports infrequent switching operations and motor protection in diverse environments.
Key Features
- Compact and Durable Design
- Space-saving construction for efficient panel integration.
- Robust materials ensure long-term reliability in harsh conditions.
High Performance and Safety
- Short arcing distanceminimizes risk during arc faults.
- Large contact spacingenhances insulation performance and longevity.
Compliance and Versatility
- Meets international standardsIEC 60947-2andUL 489.
- Compatible with thermal-magnetic and electronic trip units for flexible protection settings.
- Available in3P (three-pole)and4P (four-pole)configurations.
Working Environment Requirements
To ensure optimal functionality and safety:
Altitude: Maximum installation height of2000 meters above sea level(consult
Operatinmanufacturer for higher altitudes).
Temperature:
g range:-25°C to +70°C(standard type).
Average ambient temperature over 24 hours:≤ 40°C.
Adjustments required for extreme temperatures.
Environmental Conditions:
Non-corrosive, non-explosive atmosphere.
Protection from direct exposure to rain, snow, and mechanical vibrations.
Humidity:Relative humidity≤ 95%(non-condensing).
Installation Orientation:
Mounting inclination≤ 5°on all sides.
Power terminals connected to theupper side, load terminals to thelower side.
Specifications:
Number of Poles:3P / 4P
Frame Current:400A – 630A
Tripping Methods:Micro-logic Electronic type
Standards Complied With:IEC 60947-1, IEC 60947-2
| Rated Working Voltage (Ue) | 240V, 400V, 415V, 500V, 690V AC |
| Rated Insulation Voltage (Ui) | 800V (standard type), 1000V (high insulation type) |
| Rated Impulse Withstand Voltage (Uimp) | 6kV (standard), 8kV (high type) |
| Trip Unit Types | –Thermal-magnetic(fixed settings for standard applications) |
| –Electronic (E-Trip)(adjustable settings for precision protection) | |
| Application Types | –Distribution type(for general power distribution) |
| –Motor protection type(for motor circuits with overload protection) | |
| Breaking Capacity | –Standard type (S): Up to 36 kA (400V) |
