MCB Tripping Characteristics. MCB s Knowhow ABB STOTZ KONTAKT ABB STOTZ KONTAKT
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1 MCB Tripping Characteristics ABB STOTZ KONTAKT MCB s Knowhow ABB STOTZ KONTAKT
2 0 ABB STOTZ KONTAKT DESTO/X RH - minutes , 0, 0, 0, 0,0 0,0 0,0 0,0 I I I, Basics: General Time / current relation. Thermal tripping. Electromagnetic tripping 0I 0I I - Thermal non-tripping current rsp. Low test current - Thermal tripping current rsp. High test current - Electromagnetic non-tripping current rsp. test current: hold surges of - Electromagnetic tripping current rsp. test current: trip at least at I
3 Basics: ABB STOTZ KONTAKT DESTO/X RH - 3 minutes , 0, 0, 0, 0,0 0,0 0,0 AC DC 0,0, Magnetic tripping: AC, 00 Hz = factor. AC, 00 Hz = factor. AC, 00 Hz = factor.5 DC = factor.5 Thermal tripping is not dependent on frequency DC-current increases the magnetic tripping values by factor,5
4 minutes 0 0 0I 0 I MCB tripping characteristics "B"-characteristic acc. EN 0898 rsp. IEC 898: standard for miniature circuit breakers to be used in residential or similar applications 0I Thermal non tripping:,3 x I n 0 0 0I Thermal tripping:,5 x I n Magnetic non tripping: 3 x I n ABB STOTZ KONTAKT DESTO/X RH - 0, 0, 0, 0, 0,0 0,0 0,0 B I 0,0, I Magnetic tripping: Applications: low duty applications without starting or inrush currents 5 x I n
5 minutes C" C"-characteristic acc. EN 0898 rsp. IEC 898: standard for miniature circuit breakers to be used in residential or similar applications 0I 0I Thermal non tripping:,3 x I n Thermal tripping:,5 x I n Magnetic non tripping: 5 x I n ABB STOTZ KONTAKT DESTO/X RH - 5 0, 0, 0, 0, 0,0 0,0 0,0 C 0,0, I Magnetic tripping: 0 x I n Applications: low duty applications with medium starting or inrush currents and low loop impendance
6 minutes MCB tripping characteristics D" D"-characteristic acc. EN 0898 rsp. IEC 898: standard for miniature circuit breakers to be used in residential or similar applications 0I 0I Thermal non tripping:,3 x I n Thermal tripping:,5 x I n Magnetic non tripping: 0 x I n ABB STOTZ KONTAKT DESTO/X RH - 0, 0, 0, 0, 0,0 0,0 0,0 0,0 D, I Magnetic tripping: 0 x I n Applications: high duty applications with very high starting or inrush currents but low loop impendance
7 0 0 0 "B,C;D"-characteristics ABB STOTZ KONTAKT DESTO/X RH - 7 minutes , 0, 0, 0, 0,0 0,0 0,0 0,0 B C D, acc. EN 0898 rsp. IEC 898: Standard for miniature circuit breakers to be used in residential or similar applications. For low duty installations Rough leveled features for average applications Restricted thermal protection, allowing :,5 x I n Extreme high I of D characteristic may lead to delayed tripping time, damaging conductors and equipment Using D, low loop impedances, meaning larger cross sections of conductors is a must.
8 ABB STOTZ KONTAKT DESTO/X RH - 8 minutes , 0, 0, 0, 0,0 0,0 0,0 Z B C K D 0,0, STOTZ Z K characteristics acc. EN 097- rsp. IEC 97-: standard for industrial switchgear The tailormade solution for commercial and industrial applications Compared to tripping characteristics B, C, D the STOTZ characteristics K and Z offer a higher degree of protection. This means a higher degree of safety in both, planning and operation
9 0 0 0 MCB tripping characteristics Z" Z"-characteristic ABB STOTZ KONTAKT DESTO/X RH - 9 minutes , 0, 0, 0, 0,0 0,0 0,0 Z B C D 0,0, acc. EN 097- rsp. IEC 97-: standard for industrial switchgear 0I 0I I Thermal non tripping:,05 x I n Thermal tripping:, x I n Magnetic non tripping: x I n Magnetic tripping: 3 x I n A sensitive characteristic to protect highly sensitive equipment such as: 0,mm cable sets applications with limit switches reed contacts in burglar alarm systems sensor technology actuators in bus systems printed boards with its semiconductors
10 ABB STOTZ KONTAKT DESTO/X RH - 0 minutes , 0, 0, 0, 0,0 0,0 0,0 B 0,0, MCB tripping characteristics C K D K" K"-characteristic acc. EN 097- rsp. IEC 97-: standard for industrial switchgear 0I 0I I I Thermal non tripping: Thermal tripping: Magnetic non tripping S70: Magnetic tripping S70: Magnetic non tripping S80: Magnetic tripping S80: The right choice for high duty application with high starting or inrush currents:,05 x I n, x I n 8 x I n x I n 0 x I n x I n Motors, fan sets Power supply units: i.e V DC supply for intelligent building automation systems Charging sets; i.e for electrical forklift trucks Extra low voltage lamps, high performance tools, electronic ballasts Welding- and control power transformer
11 ABB STOTZ KONTAKT DESTO/X RH -
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