Schneider GV3P50 Motorschutzschalter

The Schneider GV3P50 motor circuit breaker is an ideal choice for protecting 22kW three-phase motors. Mit thermisch-magnetischer Auslösung, einen einstellbaren Strombereich von 37–50A, ein Schaltvermögen von 100 kA und Schutzart IP20, 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 (Ersatzmodelle)
2. In-house Schneider Replacement

2. Cross-Brand Equivalents

1. Anwendungsumgebungen & Field Cases
2. Empfohlene Anwendungen

Industrielle Automatisierung: Überlast & short-circuit protection for 3-phase asynchronous pumps, fans and compressors

Herstellung: Production line motor control & machine tool protection

Gebäudeelektrik: Central air-conditioning & fire-fighting pump control

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

Infrastruktur: 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. Typische Anwendungsfälle

Fall 1: Fan System Protection for Food Processing Plant

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

Lösung: GV3P50 + LC1D65 contactor combination

Ergebnis: Triple protection against overload, Kurzschluss & Phasenverlust; equipment failure rate reduced by 40%

Fall 2: Submersible Sewage Pump Control at Wastewater Plant

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

Lösung: GV3P50 + Hilfskontakte + PLC interlock control

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

1. Compliance bei Lufttransporten & CE-Zertifizierung
2. Luftfracht-Compliance

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

Shipping Class: General commodity without special transport restriction

Verpackung: Standard industrial carton to avoid transit damage

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

2. CE Certification Details

Anwendbare Standards: IEC 60947-2 (LV switchgear) & IEC 60947-4-1 (motor control equipment)

Valid Region: Europäischer Wirtschaftsraum (EEA) & global territories accepting CE marking

Validity: Permanently valid complying with current normative requirements

Anfrage: Check Schneider official website product page or certification database

VII. Häufige Fehlerbehebung

VIII. Sizing Guidelines & Schnellauswahlregeln

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.

Schnelle Regeln

1. Aktuelle Übereinstimmung: Motor rated current ×1.1 ≤ breaker setting ≤ motor rated current ×1.3
2. Power Reference: Bei 400V, GV3P50 matches 22kW motor (~44A nominal)
3. Accessory Option: Hilfskontakt: GV3AE11 (1NO+1NC) / GV3AE20 (2NEIN)
4. Montageabstand: DIN rail install; ≥10mm clearance for heat dissipation, away from heat-generating devices
5. Installation & Verkabelungsanleitung
6. Installationsschritte

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. Verkabelungsspezifikation

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, Kurzschluss & phase-loss protection plus manual switching, widely used in below industries:

1. Detailed Application Classification
2. Industrielle Automatisierung & Herstellung

2. Fluid Conveyance Systems

3. Gebäude & Municipal Infrastructure

4. Other Industrial Sectors

III. Non-Recommended Applications (Vermeidungsleitfaden)

1. Detailed Field Application Cases

Case1: 22kW Fan Protection in Food Factory

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

Scheme: GV3P50 + LC1D65 contactor + GV3AE11 auxiliary contact

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

Ergebnis: 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

Scheme: GV3P50 + PLC interlock + level transducer

Zustand: Feuchte Umgebung, 10~15 starts/hour frequent cycling

Ergebnis: 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

Scheme: GV3P50 + Wechselrichter + temperature sensor

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

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

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