1. Application of ISOMAX S moulded case circuit breaker
The ISOMAX series moulded case circuit breaker applies to break and making operation in AC 50/60Hz, rated operation voltage 690V or less and rated current up to 2000A circuit. It can distribute electric energy in a circuit, work as the overload of wiring and power supply equipment, or as the protector of short circuit and under voltage. Additionally, this breaker can switch line and start motor infrequently. The other characters of the products are small size, large contact spacings, high capability of break-make, and short arcing distance. The performance is as well as the original S series circuit breaker. The product complies with the standards of IEC90947-2.
2. Working Circumstance of S moulded case circuit breaker
1). The altitude of the installation place shall not be higher than 2000m(in case it’s higher, do ask for advice from us first) 2). Circumstance temperature shouldn’t be higher than +40℃ or lower than -50℃, the average temperature of 24h shouldn’t exceed +35℃. Attention: If the temperature breaks the limits issued above, users shall operate the product according to the manufacturer’s advice. 3). The working area shall not contain any explosive, metal corrosive or inductive media, the place also should weatherproof. 4). Relative atmosphere humidity shall not exceed 90% 5). Working place shouldn’t be shaky or exposed to rain & snow, connect upper terminals to power a source while lower terminals to load, inclination on each side shall not exceed 50.
3. Technical Data of S MCCB
1). Rated working voltage Ue: 380V/400V, 660V/690V. 2). Rated insulation voltage Ui: 690V. 3). Rated impulse withstanding voltage Uimp: 8kV. 4). Sorted by tripping unit: a) Thermal-magnetic type (S20-125~800), b)Electronic type(S20-400~1600). 5). Sorted by phase: a)3P, b)4P. 6). Sorted by application: a)distribution system type, b)motor protection type. 7). Sorted by rated ultimate breaking capacity: a)S-standard type, b)H-high breaking capacity type 8). Sorted by operation: a) manual type(no code),b) electrical operating type(coded as “D”) c) rotatory handle type(coded as “Z”)
|Model||Poles||Rated insulating voltage(V)||Rated operating voltage (V)||Ultimate short circuit breaker capacity (KA)||Servies short circuit breaker capacity (KA)|
|S-160 S2||3, 4||690||690||35||25|
|S-250 S3||3, 4||800||690||35||35|
|S-400 S5||3, 4||800||690||65||50|
|S-630 S6||3, 4||800||690||65||65|
|S-1600 S7||3, 4||800||690||65||65|