Daim ntawv qhia tswv yim rau Moulded Case Circuit Breakers

2026-08-25 0 Tso lus rau kuv

MCCB yog dab tsi?

Ib MCCB —molded rooj plaub Circuit Court breaker- yog cov cuab yeej tiv thaiv hluav taws xob uas tsis tshua muaj hluav taws xob uas tau txiav tawm qhov hluav taws xob thaum nws pom tias muaj ntau dhau lossis luv luv. Tsis zoo li lub fuse, nws tuaj yeem rov pib dua thiab rov siv dua tom qab taug kev. Nyob rau hauv cov ntaub ntawv molded, ib tug thermal-magnetic mus ncig teb chaws mechanism tuav ob txoj hauj lwm: lub thermal lub ntsiab lus teb rau sustained overload, thaum lub sij hawm ib tug hlau nplaum reacts instantly rau short-circuit txhaum. Qhov tshwm sim yog kev tiv thaiv uas phim txoj kev siv hluav taws xob tiag tiag coj tus cwj pwm.

Thaum twg los xaiv ib qho MCCB: cov khoom xa tuaj tseem ceeb, peb-theem faib vaj huam sib luag, lub voj voog loj loj, lossis txhua qhov chaw uas qhov kev ncua luv luv tam sim no tshaj qhov MCB tuaj yeem cuam tshuam.

Thaum MCB txaus: qhov kawg sub-circuits nrog me me loads thiab tsis tshua muaj kev ua txhaum theem - cov vaj tse nyob, teeb pom kev zoo thiab lub qhov hluav taws xob circuits.

250A three-pole MCCB

Yuav ua li cas xaiv MCCB txoj cai

Rated tam sim no (hauv)

1. — phim lub nruam load, thiab tso cai rau headroom rau pib tam sim no ntawm motors.

Lub peev xwm tawg (Icu / Ics)

2. - yuav tsum siab tshaj qhov yav tom ntej luv luv-circuit tam sim no ntawm lub installation point. Qhov siab dua qhov txhaum, qhov siab dua Icu koj xav tau.

Ncej

3. — 3P rau peb-theem tshuab, 4P qhov chaw nruab nrab kuj xav tau kev sib txuas.

Kev ntsuas hluav taws xob

4. - txheeb xyuas qhov ua haujlwm voltage (Ue), rwb thaiv tsev voltage (Ui) thiab impulse withstand (Uimp) tiv thaiv lub system.

Cov qauv thiab ntawv pov thawj

5. - IEC / EN 60947-2 kev ua raws cai thiab CE kos npe yog lub hauv paus rau cov haujlwm thoob ntiaj teb.

Daim ntawv thov

6. - kev tiv thaiv lub cev muaj zog, kev faib hluav taws xob thiab kev teeb tsa kev lag luam yuav xav tau cov qauv sib txawv thiab cov yam ntxwv ntawm kev mus ncig.

250A MCCB zoo li cas:

Txhawm rau ua qhov pob zeb no, xav txog DAM3-250 los ntawm C·DADA Electric - 250A peb-ncej MCCB uas qhia txog qhov yuav tsum tau nrhiav hauv chav kawm ntawm cov cuab yeej no:

3P configuration

● nrog 250A rated tam sim no (Nyob rau hauv), haum rau peb-theem faib boards

Kev ntsuas hluav taws xob:

● 690V ~; AC400 / 415V, Ui 750V, Uimp 8kV

Lub peev xwm tawg mus txog 50kA

● — Icu ntawm 18 / 25 / 36 / 50 kA thoob plaws B / C / N / S variants, yog li cov neeg tsim khoom tuaj yeem phim qib txhaum ntawm cov ntsiab lus sib txawv ntawm lub network

IEC / EN 60947-2 thiab GB 14048.2 ua raws

● CE cim, nrog lub meej ON/OFF toggle kov kom pom kev khiav hauj lwm

● Ua rau kev faib hluav taws xob, kev tiv thaiv lub cev muaj zog thiab kev siv hauv kev lag luam

Lub logic tom qab qhov kev qhia tshwj xeeb no: 250A, 3-ncej ncej nrog 50kA chav kawm rhuav tshem lub peev xwm npog feem ntau ntawm cov vaj huam sib luag tsim thiab cov neeg ua haujlwm xav tau - los ntawm cov rooj sib tham loj rau lub cev muaj zog feeder circuits - thaum muaj ntau yam Icu variants cia koj tsim tus nqi raws li qhov ua txhaum.

Kev pom zoo xaiv

● Rau qhov kawg circuits mus txog ~ 125A nrog rau qib qis, MCB yog qhov kev xaiv pheej yig.

● Rau kev faib khoom loj, kev tiv thaiv lub cev muaj zog thiab kev lag luam switchgear, xaiv MCCB nrog lub peev xwm tawg uas tshaj qhov kev teeb tsa lub zeem muag luv luv tam sim no.

● Thaum muaj kev tsis ntseeg, loj ib chav kawm ntawm kev rhuav tshem: tus nqi sib txawv me me, thaum qhov kev tiv thaiv npoo tuaj yeem yog qhov sib txawv ntawm qhov ua txhaum me me thiab qhov hluav taws xob loj.

Cov lus nug uas nquag nug

Q: MCCB yog dab tsi?

A: Amolded rooj plaub Circuit Court breakeryog ib tug resettable low-voltage tiv thaiv ntaus ntawv uas disconnects ib tug Circuit Court ntawm overload los yog luv luv-circuit, tsim los rau siab dua tam sim no thiab txhaum theem tshaj ib tug me me Circuit Court breaker.

Q: Icu txhais li cas ntawm MCCB?

A: Icu yog qhov kawg luv luv-circuit breaking peev - qhov siab tshaj plaws txhaum tam sim no lub breaker tuaj yeem cuam tshuam. Ics yog qhov kev pabcuam tawg muaj peev xwm, theem nws tuaj yeem cuam tshuam ntau zaus thiab tseem ua haujlwm.

Q: Kuv yuav xaiv lub peev xwm tawg rau kuv MCCB li cas?

A: Xaiv qhov ntsuas Icu siab dua qhov kev cia siab luv luv tam sim no ntawm qhov chaw teeb tsa. Distribution boards nrog siab transformer muaj peev xwm los yog ntev industrial feeders feem ntau xav tau 36-50kA cov khoom siv hauv chav kawm.

Q: DAM3-250 MCCB yog dab tsi?

A: Lub DAM3-250 yog 250A peb-ncej molded rooj plaub Circuit Court breaker los ntawm CDADA Electric, ntsuas txog 690V nrog tawg muaj peev xwm mus txog 50kA, rau kev faib hluav taws xob, kev tiv thaiv lub cev muaj zog thiab kev siv tshuab.