シュナイダー GV3P50 モーターサーキットブレーカー

The Schneider GV3P50 motor circuit breaker is an ideal choice for protecting 22kW three-phase motors. Featuring thermal-magnetic tripping, an adjustable current range of 37–50A, a breaking capacity of 100kA and IP20 ingress protection rating, it is widely deployed in industrial automation, fluid conveyance, building facilities and other sectors. Key points: match breaker rating to motor power and operating conditions; avoid non-recommended applications including DC circuits, high-frequency starting and high-altitude environments. Combined with contactors and auxiliary contacts, it forms a complete motor protection and control system.

1. Core Technical Specification Table

Ⅲ. Full GV3P Series Model List

1. Alternative Cross Reference (代替モデル)
2. In-house Schneider Replacement

2. ブランド間の同等品

1. Application Environments & Field Cases
2. 推奨アプリケーション

産業オートメーション: 過負荷 & short-circuit protection for 3-phase asynchronous pumps, fans and compressors

製造業: Production line motor control & machine tool protection

建物の電気: Central air-conditioning & fire-fighting pump control

Energy Sector: Front-end protection for small generator sets and inverters

インフラストラクチャー: Wastewater treatment equipment & bulk material conveying systems

2. Non-Recommended Applications

DC Circuits: Designed exclusively for AC; abnormal tripping characteristics under DC supply

Ultra-Frequent Cycling: Not applicable for >30 starts per hour (accelerates trip unit aging)

High Altitude: Derating mandatory above 2000m elevation

Corrosive Atmosphere: No anti-corrosion coating; unsuitable for strong acid/alkali surroundings

3. 代表的な応用例

場合 1: Fan System Protection for Food Processing Plant

装置: 3×22kW centrifugal fans, 380V/50Hz

解決: GV3P50 + LC1D65 contactor combination

Outcome: 過負荷に対する三重保護, 短絡 & 位相損失; equipment failure rate reduced by 40%

場合 2: Submersible Sewage Pump Control at Wastewater Plant

装置: 4×22kW submersible sewage pumps, 380V/50Hz

解決: GV3P50 + 補助接点 + PLC interlock control

Outcome: Full motor protection plus remote monitoring, lower maintenance expense

1. 航空輸送のコンプライアンス & CE認証
2. 航空貨物のコンプライアンス

UN38.3: 不要; no built-in lithium battery or supercapacitor inside

配送クラス: General commodity without special transport restriction

パッキング: Standard industrial carton to avoid transit damage

Shipping Document: Copy of CE certificate + RoHS compliance declaration available

2. CE認証の詳細

適用規格: IEC 60947-2 (LV switchgear) & IEC 60947-4-1 (motor control equipment)

Valid Region: European Economic Area (EEA) & global territories accepting CE marking

有効: Permanently valid complying with current normative requirements

問い合わせ: Check Schneider official website product page or certification database

Ⅶ. 一般的な障害のトラブルシューティング

VIII. Sizing Guidelines & クイック選択ルール

Quick Selection Formula Summary

> GV3P series 3-pole thermal-magnetic breakers;

> Suffix number denotes upper current limit;

> 40 = 25–40A, 50 =37–50A, 65 max at 65A;

> Power matching rule: 40 for 18.5kW, 50 for 22kW, 65 for 30kW.

Quick Rules

1. 現在のマッチング: Motor rated current ×1.1 ≤ breaker setting ≤ motor rated current ×1.3
2. Power Reference: 400V時, GV3P50 matches 22kW motor (~44A nominal)
3. Accessory Option: 補助接点: GV3AE11 (1NO+1NC) / GV3AE20 (2いいえ)
4. Mounting Spacing: DIN rail install; ≥10mm clearance for heat dissipation, away from heat-generating devices
5. インストール & Wiring Instruction
6. インストール手順

Confirm standard 35mm DIN rail

Snap breaker firmly onto rail

Incoming power: top-feed or bottom-feed acceptable

Motor cable connection: terminal tightening torque 2.5Nm recommended

2. 配線仕様

Wire cross-section range: 1.5mm² min ~35mm² max

ターミナル: EverLink BTR screw terminal compatible with copper/aluminum conductors

Phase marking: R/S/T corresponds to L1/L2/L3; no neutral connection (3P without N pole)

3. EMC Protection

Maintain ≥50mm clearance between breaker and contactors

Separate control wiring from power cables to avoid cross-interference

Install EMC filter if needed for EMI suppression

Full Application Overview for Schneider GV3P50 Motor Circuit Breaker

1. Core Application Summary

Schneider GV3P50 is a 3-pole thermal-magnetic motor circuit breaker with adjustable trip 37–50A, rated for 22kW three-phase asynchronous motors @400V. Its core functions: motor overload, 短絡 & phase-loss protection plus manual switching, widely used in below industries:

1. Detailed Application Classification
2. 産業オートメーション & 製造業

2. Fluid Conveyance Systems

3. 建物 & Municipal Infrastructure

4. Other Industrial Sectors

Ⅲ. Non-Recommended Applications (Avoidance Guide)

1. Detailed Field Application Cases

Case1: 22kW Fan Protection in Food Factory

Setup: 3×22kW centrifugal fans 380V/50Hz, independent control per unit

スキーム: GV3P50 + LC1D65 contactor + GV3AE11 auxiliary contact

論理: Manual/Auto switch; auto stop & alarm upon overload

Result: Triple protection realized; failure rate -40%, maintenance cost -30%

Case2: Submersible Sewage Pump Control at WWTP

Setup: 4×22kW submersible sewage pumps 380V/50Hz, alternating operation

スキーム: GV3P50 + PLC interlock + level transducer

状態: Humid environment, 10~15 starts/hour frequent cycling

Result: Anti-stall burnout + remote auto-switching, improved system reliability

Case3: Central Air-conditioning for Shopping Mall

Setup: 3×22kW chilled water pumps with VFD control 380V/50Hz

スキーム: GV3P50 + インバータ + temperature sensor

特徴: Speed auto-adjust by return water temp; coordinated protection by inverter + breaker under overload

Result: ≥30% energy saving, service life doubled, superior system stability

1. Recommended Matching Components & 選択のヒント
2. Recommended Matching List

2. Sizing Rules
3. Power Match: 22kW (~44A @400V) optimally paired with GV3P50 (37–50A)
4. Trip Setting: Motor rated current ×1.1 ≤ breaker setting ≤ motor rated current ×1.3
5. Mount Clearance: ≥50mm gap to adjacent contactors; ≥10mm free space for heat dissipation
6. 配線トルク: Cable terminal tightening torque fixed at 2.5Nm
7. Ambient Derate: ディレート 1% rated current per every 1°C rise above +40°C ambient temperature