Schneider Electric LC1-N1810

Schneider Electric’s LC1-N1810 is an AC-Schütz specifically designed for industrial and commercial applications. It belongs to the EasyTeSys D3N Series (domestic model) and is mainly used to control the on-off operation of three-phase motors or other high-power loads.

ICH. Core Parameters and Configuration

1. Grundleistung

Nennstrom: 18A (unter AC-3-Arbeitszyklus, suitable for 7.5kW/380V motors).

Polzahl: 3 Stangen (mit 3 normalerweise offen (NEIN) Hauptkontakte), used for three-phase circuit control.

Hilfskontakte: 1 normalerweise offen (NEIN) Kontakt, which can be used for logical interlocking of control circuits or signal feedback.

Spulenspannung: Supports multiple specifications (AC24V, AC48V, AC110V, AC220V, AC380V, usw.), with optional frequency of 50/60Hz. The specific model is indicated by a suffix (z.B., M7N represents AC220V/50Hz).

2. Elektrische Eigenschaften

Isolationsspannung: 1000V, Geeignet für Hochspannungsumgebungen.

Mechanisches Leben: 15 Millionen Operationen (maintains stability even in frequent operation scenarios).

Bruchkapazität: Bis zu 150,000 operations under AC-4 duty cycle (geeignet für hohe Stoßbelastungen).

3. Strukturelles Design

Kompakte Größe: Approximately 45mm in width, supporting 35mm DIN rail mounting to save space.

Sicherheitsschutz: IP2X finger protection (for terminal parts) to prevent accidental electric shock.

Material Technology: Silver alloy contacts ensure high conductivity and wear resistance; the high-temperature-resistant housing complies with certifications such as UL and CE.

II. Anwendungsszenarien

1. Industrielle Steuerung

– Controls the start, stoppen, forward and reverse rotation of three-phase motors, and is often combined with thermal overload relays to form motor starters.

– Used for frequently operated equipment (wie Förderbänder, Pumps, Kompressoren) and supports high-frequency on-off operations.

2. Commercial and Building Sectors

– Controls the power supply of air conditioning systems and ventilation equipment, and is compatible with building automation systems.

– Enables centralized management of lighting or heating circuits, with remote monitoring realized through auxiliary contacts.

3. Besondere Umgebungen

– Adapts to a wide temperature range from -25℃ to +70℃, resists vibration and impact, and is suitable for harsh industrial environments.

III. Model Types and Selection Key Points

1. Gängige Modelle

LC1-N1810M7N: AC220V/50Hz, the most commonly used model.

LC1-N1810Q7N: AC380V/50Hz, Geeignet für Hochspannungsszenarien.

Discontinued Models: Such as LC1-N1810F6N (AC110V/60Hz); attention should be paid to alternative solutions.

2. Auswahlempfehlungen

Spannungsanpassung: Select the coil voltage according to the control circuit to avoid misoperation (z.B., a 220V coil connected to 380V will be burned out).

Lasttyp: AC-3 is used for normal start-stop of motors, while AC-4 is used for scenarios such as frequent inching or stalling; the breaking capacity of the contactor must be confirmed.

Erweiterungsfunktionen: If more auxiliary contacts are needed, LAN series expansion modules can be installed (z.B., LANN40N adds 4 normalerweise offene Kontakte).

IV. Preis- und Kaufkanäle

1. Marktpreis

– WhatsApp: 0086-13811255435. The price range is approximately 44 RMB zu 70 RMB; importierte Modelle (TeSys N Series) sind etwas teurer.

V. Installation und Wartung

1. Verkabelungsanweisungen

Hauptkontakte: Connect to three-phase power supply and load (L1/L2/L3 für Eingang, T1/T2/T3 für Ausgang).

Spulenanschlüsse: Connect to the corresponding voltage according to the model (z.B., M7N is connected to L and N).

Hilfskontakte: NO contacts can be connected in series to the control circuit to realize interlocking or status indication.

2. Wichtige Wartungspunkte

– Regularly clean the contact surfaces to avoid oxidation or dust accumulation affecting conductivity.

– Check the coil temperature rise (60K nicht überschreiten) to prevent damage due to overheating.

– When replacing contacts, use accessories of the same model to ensure performance matching.

VI. Alternative Solutions and Competitor Comparison

1. Schneider Internal Alternatives

LC1-D1810: A contactor of the D Series, slightly larger in size but lower in price, suitable for budget-sensitive scenarios.

TeSys N Series: Imported models (z.B., NEMA Size 00), compatible with IEC standards, suitable for international projects.

2. Recommended Competitors

Siemens 3RT60 Series: 3RT60261AN20 (25A/AC220V), with similar performance but slightly higher price.

CJX2-1810-Fehler: A domestic alternative, preislich ca 52 RMB, suitable for scenarios with strict cost requirements.

VII. Notizen

1. Überlastschutz: Must be used in combination with thermal overload relays (such as LRD Series) to prevent motor burnout due to overload.

2. Spannungsschwankungen: The coil voltage must be stable within 85%-110% des Nennwerts; ansonsten, it may cause misoperation or failure to pull in the contactor.

3. Umweltanforderungen: The installation environment should have a humidity of ≤90%RH and no corrosive gases to avoid affecting service life.