JCR3HM RCCB 대 LSIG MCCB: 보호 기능 및 등급 제한
기존의 제품명은 두 가지 서로 다른 장치 사양을 결합한 것으로, 800 V 전자식 MCCB(LSIG 기능 포함)와 JCR3HM RCD를 의미합니다. 이들은 하나의 제품으로 취급되어서는 안 됩니다. 현재의 JCR3HM 등재 자료는 RCCB 잔류전류 보호를 위한 것으로, 별도의 조정된 과전류 보호가 필요합니다.
The JCR3HM 누전차단기 표에는 2극/4극, A형 또는 AC형, 30/100/300 mA 옵션과 25~100 A의 정격전류 선택지가 나열되어 있습니다. 2극용으로는 230/240 V, 4극용으로는 400/415 V가 기재되어 있습니다. 또한 800 V LSIG MCCB 정격은 명시되어 있지 않습니다.
What JCR3HM does
It detects residual current within the selected waveform and sensitivity scope. An RCCB under IEC 61008-1 has no integral overcurrent protection. Its current-carrying rating must therefore be coordinated with the circuit’s MCB or fuse and the manufacturer’s fault-protection arrangement.
Choose waveform type from the connected load and sensitivity from the protection objective and installation rules. A 300 mA setting cannot simply replace required 30 mA additional protection to avoid trips.
차이점을 검토하십시오 RCBO 및 RCCB 보호 과부하 및 누전 기능을 할당하기 전에.
What an LSIG MCCB does
한 LSIG MCCB provides declared long-time, short-time, instantaneous and ground-fault functions. Its ground-fault function is not automatically equivalent to the high-sensitivity residual-current function required on a final circuit. Voltage, fault duty and sensing arrangements must come from its own exact model table.
| 영역 | JCR3HM listing | Electronic LSIG MCCB |
|---|---|---|
| 제품 카테고리 | RCCB | MCCB with specified electronic release |
| Overcurrent protection | Separate coordinated device required | Declared L/S/I functions |
| Leakage or earth-fault function | Selected residual-current type and sensitivity | Ground-fault function within release scope |
| Voltage | Listed 2P and 4P values | Exact MCCB rating table required |
가이드 잔류 전류 보호 describes the installation conditions that a device label alone cannot establish.
Keep the two specifications separate
For JCR3HM, request poles, current, Type A or AC, residual-current sensitivity and coordination evidence. For an 800 V MCCB requirement, request a different exact product code with explicit AC or DC operating voltage and fault ratings. Neither product’s name supplies the other’s functions.
| Order | Essential evidence |
|---|---|
| JCR3HM 누전차단기 | RCCB datasheet, wiring and overcurrent coordination |
| 800 V MCCB | Exact voltage and fault-duty table, trip curves and connections |
| Complete panel | Assembly verification and installation design |
Installation and procurement checks
Neutral routing, earthing and test procedures remain important for the RCCB. Use the declared test method and a suitable residual-current tester. IEC 61008-1 and IEC 60947-2 have different product scopes; listing both does not combine two device categories.
Ask W9 Group to confirm the exact required product before quotation. Keep the RCCB and MCCB schedules separate so a misleading legacy title cannot become a purchasing instruction.
자주 묻는 질문
Is JCR3HM an 800 V LSIG MCCB?
No. The reviewed current listing identifies an RCCB with separate overcurrent protection required. It does not establish that combined description.
Does JCR3HM provide overload protection by itself?
No. Its RCCB function requires a coordinated MCB or fuse for overload and short-circuit protection.
Is an MCCB ground-fault function the same as a 30 mA RCD?
Not automatically. Sensitivity, waveform response, sensing and intended protection differ. Verify the exact functions required by the installation.
How should an 800 V requirement be quoted?
Specify a separate exact MCCB with the required AC or DC voltage, fault duty, poles and trip functions. Do not infer it from the JCR3HM name.
참고문헌
- IEC 61008-1:2024 — RCCBs without integral overcurrent protection.
- IET — 어떤 RCD 타입인가?.
- IEC 60364-6:2016 — 설치 검증.
For waveform and pole selection, W9 그룹에 문의하기 with the circuit topology, load equipment and destination-market rules.