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en預(yù)先選擇的斷路器組合，適用于230/240至
415 V，根據(jù)IEC 60947-2附錄A。這些表涵蓋了ABB SACE Emax空氣斷路器系列、SACE Tmax XT和
Tmax T模制外殼斷路器系列和ABB模塊化系列
斷路器。這些值是根據(jù)特定規(guī)則獲得的，如果沒(méi)有，則
在某些情況下，可能會(huì)給出更低的選擇性值
比給出的要多。其中一些指導(dǎo)原則通常有效，并已指出
在下面其他僅指特定類型的斷路器，并將
以相關(guān)表格下的注釋為準(zhǔn)。
一般規(guī)則：
•必須排除上游斷路器電子脫扣器的功能l
（l3處于關(guān)閉狀態(tài)）；
•熱磁（TM）或純磁（MA-MF）斷路器的磁跳閘
位于上游的必須≥ 10·英寸
并設(shè)置為大閾值；
•驗(yàn)證用戶采用的設(shè)置至關(guān)重要
對(duì)于位于以下位置的斷路器的電子和熱磁脫扣器：
上游或下游導(dǎo)致適當(dāng)間隔的時(shí)間-電流曲線。
正確閱讀協(xié)調(diào)表的注意事項(xiàng)：
考慮到給定參數(shù)中的下限，獲得了選擇性的極限值
值、供電側(cè)斷路器的分?jǐn)嗄芰头謹(jǐn)?br />負(fù)載側(cè)CB的容量。
字母T表示給定組合的總選擇性，對(duì)應(yīng)的
考慮到下游和上游的較低值，獲得kA值
斷路器的開(kāi)斷能力（Icu）。
下表顯示了SACE Emax在415Vac下的分?jǐn)嗄芰Γ?br />SACE Tmax XT和Tmax T斷路器。
用于塑殼斷路器
ACB（空氣斷路器）
TM=熱磁釋放
–TMD（Tmax）
–TMA（Tmax）
M=僅磁性釋放
–MF（Tmax）
–MA（Tmax）
EL=電子脫扣器
對(duì)于MCB（微型斷路器）：
B=特征跳閘（I3=3…5In）
C=特征跳閘（I3=5…10In）
D=特征跳閘（I3=10…20In）
K=特征跳閘（I3=8…14In）
Z=特征跳閘（I3=2…3In）
鑰匙
415V ac時(shí)的Emax
版本Icu[kA]
B 42
N 65*
S 75**
H 100
L 130***
V 150****
*對(duì)于Emax E1版本N，Icu=50kA
**對(duì)于Emax E2版本S，Icu=85kA
***對(duì)于Emax X1版本L，Icu=150kA
****對(duì)于Emax E3版本V，Icu=130kA

en pre-selected combinations of circuit-breakers, for voltages from 230/240 to 415 V, according annex A of IEC 60947-2. The tables cover the possible combinations of ABB SACE Emax air circuit-breakers series, SACE Tmax XT and Tmax T moulded-case circuit-breakers series and the series of ABB modular circuit-breakers. The values are obtained following particular rules which, if not respected, may give selectivity values which in some cases may be much lower than those given. Some of these guidelines are generally valid and are indicated below; others refer exclusively to particular types of circuit-breakers and will be subject to notes below the relevant table. General rules: • the function l of electronic releases of upstream breakers must be excluded (l3 in OFF); • the magnetic trip of thermomagnetic (TM) or magnetic only (MA-MF) breakers positioned upstream must be ≥ 10·In and set to the maximum threshold; • it is fundamentally important to verify that the settings adopted by the user for the electronic and thermomagnetic releases of breakers positioned either upstream or downstream result in time-current curves properly spaced. Notes for the correct reading of the coordination tables: The limit value of selectivity is obtained considering the lower among the given value, the breaking capacity of the CB on the supply side and the breaking capacity of the CB on the load side. The letter T indicates total selectivity for the given combination, the corresponding value in kA is obtained considering the lower of the downstream and upstream circuit-breakers’ breaking capacities (Icu). The following tables show the breaking capacities at 415Vac for SACE Emax, SACE Tmax XT and Tmax T circuit-breakers. For MCCB (Moulded-case circuit-breaker) ACB (Air circuit-breaker) TM = thermomagnetic release – TMD (Tmax) – TMA (Tmax) M = magnetic only release – MF (Tmax) – MA (Tmax) EL = elettronic release For MCB (Miniature circuit-breaker): B = charatteristic trip (I3=3...5In) C = charatteristic trip (I3=5...10In) D = charatteristic trip (I3=10...20In) K = charatteristic trip (I3=8...14In) Z = charatteristic trip (I3=2...3In) Keys Emax @ 415V ac Version Icu [kA] B 42 N 65* S 75** H 100 L 130*** V 150**** * For Emax E1 version N Icu=50kA ** For Emax E2 version S Icu=85kA *** For Emax X1 version L Icu=150kA **** For Emax E3 version V Icu=130kA