Disjuntor do motor Schneider GV3P50

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 (Modelos de substituição)
2. In-house Schneider Replacement

2. Equivalentes entre marcas

1. Ambientes de aplicativos & Field Cases
2. Aplicativos recomendados

Automação Industrial: Sobrecarga & short-circuit protection for 3-phase asynchronous pumps, fans and compressors

Fabricação: Production line motor control & machine tool protection

Elétrica predial: Central air-conditioning & fire-fighting pump control

Setor Energético: Front-end protection for small generator sets and inverters

Infraestrutura: Wastewater treatment equipment & bulk material conveying systems

2. Aplicativos não recomendados

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. Casos de aplicação típicos

Caso 1: Fan System Protection for Food Processing Plant

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

Solução: GV3P50 + LC1D65 contactor combination

Resultado: Proteção tripla contra sobrecarga, curto-circuito & perda de fase; equipment failure rate reduced by 40%

Caso 2: Submersible Sewage Pump Control at Wastewater Plant

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

Solução: GV3P50 + contatos auxiliares + PLC interlock control

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

1. Conformidade de Remessa Aérea & Certificação CE
2. Conformidade com frete aéreo

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

Classe de envio: General commodity without special transport restriction

Embalagem: Standard industrial carton to avoid transit damage

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

2. CE Certification Details

Padrões Aplicáveis: CEI 60947-2 (LV switchgear) & CEI 60947-4-1 (motor control equipment)

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

Validity: Permanently valid complying with current normative requirements

Investigação: Check Schneider official website product page or certification database

VII. Solução de problemas de falhas comuns

VIII. Sizing Guidelines & Regras de seleção rápida

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. Correspondência atual: Motor rated current ×1.1 ≤ breaker setting ≤ motor rated current ×1.3
2. Power Reference: A 400 V, GV3P50 matches 22kW motor (~44A nominal)
3. Accessory Option: Contato auxiliar: GV3AE11 (1NÃO+1NC) / GV3AE20 (2NÃO)
4. Espaçamento de montagem: DIN rail install; ≥10mm clearance for heat dissipation, away from heat-generating devices
5. Instalação & Wiring Instruction
6. Etapas de instalação

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. Especificação de fiação

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

terminal: 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, curto-circuito & phase-loss protection plus manual switching, widely used in below industries:

1. Detailed Application Classification
2. Automação Industrial & Fabricação

2. Fluid Conveyance Systems

3. Prédio & Municipal Infrastructure

4. Other Industrial Sectors

III. Aplicativos não recomendados (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

Esquema: GV3P50 + LC1D65 contactor + GV3AE11 auxiliary contact

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

Resultado: 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

Esquema: GV3P50 + PLC interlock + level transducer

Doença: Ambiente úmido, 10~15 starts/hour frequent cycling

Resultado: 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

Esquema: GV3P50 + inversor + temperature sensor

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

Resultado: ≥30% energy saving, vida útil duplicada, superior system stability

1. Recommended Matching Components & Dicas de seleção
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. Torque de fiação: Cable terminal tightening torque fixed at 2.5Nm
7. Ambient Derate: Desclassificar 1% rated current per every 1°C rise above +40°C ambient temperature