Molded Case Circuit Breaker MCCB Nameplate
Type
XE50NS, XS30NS
Teraski MCCB series
TemBreak "XE" series (Economical types)
TemBreak "XS" series (Standard types)
TemBreak "XH" series (High fault level series)
TemBreak "XM" series (Molded case circuit breaker for motor protection)
"TL" series (Current limiting series)
"TO" series
"TG" series
"TT" series (Molded case circuit breaker for selectivity)
"TTE" series (Electronic type)
"TM" series (Molded case circuit breaker for motor protection)
NS
“N” Low breaking capacity
“S” medium breaking capacity
Standards
JIS C 8201-2-1 Ann2
(Low-voltage switchgear and control gear-Part 2-1: Circuit-breakers)
Japanese industrial standards
IEC 60947-2 & IEC947
(Low-voltage switch gear and control gear – Part 2: Circuit-breakers)
International electrotechnical standards
NK/JAPAN
Nippon Kaiji Kyokai for certification, authorization and approval.
BS
British standards
Ratings
30A & 50A
Frame rating: 30A for 10A (In) and 50A for 33A (In) MCCB.
33A & 10A
Rated operational current: In (A)
40°C
Testing temperature of MCCB by IEC 60947-2
45°C
Testing temperature of MCCB by NK 88T205
Ui
Rated AC insulation voltage
Ue
Rated AC operational voltage
50/60Hz
Rated operational circuit breaker frequency
Icu/Ics
AC rated breaking capacity (kA sym RMS)/AC rated service breaking capacity
Utilization Category
CORD P. (Flexible cord protection test)
BREAKING CAP. (sym)
Push to trip button
References
1. https://www.terasaki.co.jp/english/business/discontinued/discontinued_other.html
2. https://www.se.com/eg/en/faqs/FA228821/#:~:text=The%20rated%20breaking%20capacity%
20(Icu,successfully%20interrupt%20without%20being%20damaged.
3. https://support.industry.siemens.com/forum/pk/en/posts/breaking-and-makingcapacity/94308#:~:text=Making%20capacity%20of%20a%20circuit,short%20circuit%20betw
een%20the%20phases.
4. https://www.quora.com/Whats-the-breaking-and-making-capacity-of-a-circuit-breaker
5. https://www.linkedin.com/pulse/breaking-making-capacity-circuit-breakerpart-1-kunmiodunoku
6. https://www.se.com/us/en/faqs/FA300890/#:~:text=Frame%20is%20also%20used%20to,nec
essarily%20indicate%20the%20maximum%20setting.
7. https://www.interpower.com/ic/designers/designing-for-export/guides-and-charts/ULCSAClassification-of-cords.html