住所
304ノース・カーディナル
セント・ドーチェスター・センター（マサチューセッツ州02124
勤務時間
月曜日～金曜日：午前7時～午後7時
週末午前10時～午後5時
エムシービー
AC MCB — Miniature Circuit Breakers
- Compact protection for 230/400 VAC distribution — B/C/D curves, 6–125 A (by model).
- 6 kA / 10 kA breaking capacity options; DIN rail EN 60715; IP20 finger-safe terminals.
- Designed according to IEC 60898-1 (final circuits) and IEC 60947-2 (industrial, by model).
概要
Kuangya AC MCBs protect branch circuits against overloads and short circuits in residential, commercial, and light-industrial panels. The range covers single-pole to four-pole configurations with B, C, or D tripping curves to match load characteristics from lighting and socket circuits to motor and transformer feeders. Tool-free DIN-rail mounting, front wiring access, and compact footprints simplify new installations and retrofits alike.
主な特徴
- Ratings: 6–125 A (by model), 230/400 VAC, 50/60 Hz.
- Breaking capacity: 6 kA or 10 kA at 230/400 VAC (by model).
- Tripping curves: B (resistive), C (mixed/inductive), D (high inrush).
- Poles: 1P / 2P / 3P / 4P with common trip.
- Terminal capacity: up to 25 mm² Cu (typ.), captive screws; IP20 finger-safe.
- Endurance: ≥ 10,000 mechanical operations (typ.); high electrical life for frequent switching (by curve).
- Standards: designed according to IEC 60898-1 and IEC 60947-2 (model dependent).
- Mounting: DIN rail EN 60715, top/bottom feed, padlockable handle options (by model).
- Ambient: −25…+55 °C (typ.), storage −40…+70 °C; altitude ≤ 2000 m (typ.).
- Accessories: auxiliary contacts / alarm (by model), phase barriers, label window.
Technical Specifications
| パラメータ | Typical Value / Options |
|---|---|
| Standards (design) | IEC 60898-1 (domestic, final circuits); IEC 60947-2 (industrial, by model) |
| Rated Voltage Ue | 230/400 VAC, 50/60 Hz |
| Rated Current In | 6, 10, 16, 20, 25, 32, 40, 50, 63, 80, 100, 125 A (by model) |
| 破断能力 | 6 kA or 10 kA at 230/400 VAC (by model) |
| Tripping Curve | B / C / D |
| ポール | 1P / 2P / 3P / 4P |
| Dielectric Test | 2.5 kV, 1 min (typ.) |
| Impulse Withstand Uimp | 4 kV (typ.) |
| Insulation Category | Pollution degree 2; overvoltage category III |
| ターミナル容量 | Up to 25 mm² Cu (typ.), tightening torque 2.5 N·m (≈22 in-lb) |
| Protection Degree | IP20 (terminals) when installed |
| 取り付け | DIN rail EN 60715, top/bottom feed |
| Ambient | −25…+55 °C operation (typ.), ≤2000 m altitude |
| Materials | Thermoset/thermoplastic housing; copper alloy terminals |
| Options | Aux/Alarm contacts (OF/SD), handle lock, phase barriers (by model) |
寸法
アプリケーション
- Residential distribution boards, lighting and socket circuits.
- Commercial sub-panels, HVAC, small motors and pumps (curve C/D).
- Control panels and OEM equipment requiring compact short-circuit protection.
- Retrofits and upgrades from legacy breakers to DIN-rail form factor.
クアンヤを選ぶ理由
- Factory-direct supply with ISO-based quality control and traceability.
- Wide selection across poles, ratings and curves to fit standard panels.
- Stable lead times and export packaging validated for global shipping.
- OEM options on labeling, accessories and packing (by project).
よくあるご質問
What is the difference between B, C and D curves?
B trips at 3–5× In (resistive loads), C at 5–10× In (mixed/inductive), D at 10–20× In (high inrush: motors, transformers).
6 kA vs 10 kA — which should I choose?
Match the breaking capacity to the prospective short-circuit current at the installation point; many commercial panels require 10 kA.
Can I use AC MCBs on DC?
No; use DC-rated breakers for direct current systems due to different arc behavior and polarity considerations.
Do you offer auxiliary contacts?
Yes, auxiliary/alarm contacts are available on selected models; check the datasheet for part numbers.
Are these compliant with IEC standards?
They are designed according to IEC 60898-1 and/or IEC 60947-2 depending on model; compliance/marking is model-specific.