JCB3-63DC DC MCB: 등급, 극성 및 배선 확인
검토하기 photovoltaic protection range against the maximum DC voltage and permitted pole connection.
The DC MCCB guide explains why an AC rating cannot establish DC interruption capability.
JCB3-63DC rating and documentation matrix
| 영역 | Reviewed table | Required clarification |
|---|---|---|
| 현재 | 6–63 A options | Exact current and B/C curve |
| Pole count | 1P through 4P | Approved wiring arrangement |
| Voltage | Pole-dependent values | Actual version and connection |
| Fault rating | 6 kA entry | Applicable voltage and test conditions |
| Polarity | Conflicting public wording | Delivered marking and written instructions |
| Project state | 리뷰 |
|---|---|
| Normal operation | Current direction and conductor protection |
| Fault | All possible source contributions |
| 보수 | Isolation of every source |
| Replacement | Matching code, markings and diagram |
The photovoltaic distribution guide distinguishes PV-string assumptions from battery fault-current duties.
Resolve polarity before wiring
The current table lists 6–63 A, B/C curves, 1P through 4P and pole-dependent DC voltages up to the stated four-pole configuration. It also lists 6 kA, whose applicable voltage and connection conditions must be confirmed. These entries do not settle the inconsistency between polarity descriptions in the surrounding prose.
Request the delivered unit’s terminal markings, exact order code and approved diagram. Assess normal and possible fault-current directions for the actual source arrangement. Do not use this article to infer a battery or PV wiring recipe, or assume a generic label permits bidirectional interruption.
JCB3-63DC procurement requires a confirmed polarity diagram. The current public listing contains inconsistent polarity wording, so its title alone cannot determine the permitted current direction of the delivered version.
The JCB3-63DC MCB’s compact and durable design makes it easy to install and ensures long-term reliability. Its polarized DC configuration further enhances its versatility, making it suitable for a variety of DC circuit protection applications.
자주 묻는 질문
Is JCB3-63DC polarity-sensitive?
The reviewed public wording is inconsistent. Obtain the exact supplied version’s markings and wiring instructions before installation.
Is 1000 V available from a single pole?
The table assigns different voltage ratings to different pole configurations. Do not apply the four-pole value to one pole or improvise series connections.
Does its DC label establish any battery application?
No. Confirm voltage, 과부하 전류, permitted direction and source conditions for the actual battery circuit.
What needs to accompany a JCB3-63DC order?
Request the full code, current and curve, pole arrangement, voltage-specific fault-duty information and approved polarity diagram. Resolve discrepancies before release.
참고문헌
- IEC 60947-2:2024 — 회로 차단기 제품 범위.
- IEC 60364-7-712:2025 — photovoltaic electrical installations.
- IEC 60947-3 consolidated edition — switches, disconnectors and switch-disconnectors.
For a PV or DC selection, W9 그룹에 문의하기 with maximum voltage, operating and fault current, earthing and the intended pole connection.