شنايدر LC1E400 المقاولين

ال Schneider LC1E400 contactor is a 400A high-current AC contactor belonging to the EasyPact TVS series, specifically designed for industrial applications.

Detailed Specifications:

1. المعلمات الأساسية

رقم القطب: 3 أقطاب

تصنيف جهد التشغيل: Power circuit ≤ 690V AC 50/60Hz

تصنيف التشغيل الحالي:

– 400A under AC-3 utilization category (operating temperature ≤ 55°C, operating voltage ≤ 440V AC)

– 500A under AC-1 utilization category (operating temperature ≤ 40°C, operating voltage ≤ 440V AC)

التحكم في جهد الملف:

– Common specifications include 220V AC 50/60Hz (على سبيل المثال, LC1E400M7N) and 110V AC 50/60Hz (على سبيل المثال, LC1E400F7N)

Contact Configuration: 3لا (3 normally open) main contacts; some models are equipped with 1NO + 1NC auxiliary contacts

2. Performance Features

Conventional Thermal Current (Ith): 500A for power circuit at operating temperature ≤ 40°C

Rated Making & كسر القدرة:

– Rated making capacity (Irms): 4000أ

– Rated breaking capacity: 3200أ (at operating voltage ≤ 380V AC), متوافق مع IEC 60947 معيار

الحياة الكهربائية: 600,000 العمليات (ايه سي-3), 250,000 العمليات (ايه سي-1)

الحياة الميكانيكية: Up to 4,000,000 العمليات

3. Utilization Categories

ايه سي-3 (Most Common): For starting and stopping squirrel-cage motors

ايه سي-1: For controlling non-inductive or slightly inductive loads (على سبيل المثال, resistance heating equipment)

4. سيناريوهات التطبيق النموذجية

– أنظمة التحكم في المحركات (نطاق الطاقة: 220كيلو واط عند 415 فولت إلى 280 كيلو واط عند 690 فولت)

– AC load control with power factor ≥ 0.95

– معدات الأتمتة الصناعية

– Main switch control for lighting systems

5. Installation & Wiring

– طريقة التركيب: Base mounting

– Control Circuit Wiring: Bolt-fastened, compatible with 1-4mm² flexible or rigid wires

– Power Circuit Wiring: Cable with lugs or terminal connection; terminal specification: 2×30x5mm, tightening torque: 35ن · م

Selection Guide for Schneider LC1E400 Contactor

The Schneider LC1E400 is a 400A high-current AC contactor in the EasyPact TVS series, suitable for industrial motor control and high-power load scenarios. Follow these steps for correct selection:

1. Determine Basic Parameters
2. Load Type & Utilization Category

ايه سي-3 (Most Common): For starting and stopping squirrel-cage motors

ايه سي-1: For non-inductive or slightly inductive loads (على سبيل المثال, resistance heaters)

Selection Key Point: Choose the corresponding utilization category based on actual load. The LC1E400 has a rated current of 400A (ايه سي-3) and 500A (ايه سي-1).

2. تصنيف جهد التشغيل

Main Circuit Voltage: ≤ 690V AC 50/60Hz

Selection Key Point: Contactor’s rated voltage ≥ maximum system voltage (recommended: 1.2× system voltage)

3. تصنيف التشغيل الحالي

LC1E400 Parameters: 400أ (ايه سي-3, ≤440V, ≥55 درجة مئوية); 500أ (ايه سي-1, ≤440V, ≥40 درجة مئوية)

Selection Formula: Contactor’s rated current ≥ Calculated load current × Safety factor (1.2~1.5 for motor loads)

Calculation Example:

– Rated current of a 400V, 200kW motor ≈ 361A (I=P/(√3×U×cosφ), cosφ=0.85)

– Selected current = 361A × 1.3 ≈ 469A. Therefore, the LC1E400 (400أ) is insufficient; a larger model is required.

4. التحكم في جهد الملف

Common Specifications:

– LC1E400M7N: 220فولت تيار متردد 50/60 هرتز

– LC1E400F7N: 110فولت تيار متردد 50/60 هرتز

– LC1E400U7N: 240فولت تيار متردد 50/60 هرتز

Selection Key Point: Must match the control circuit voltage (allow ±10% fluctuation)

1. Complete Selection Process

Step 1: Confirm Load Type & Operating Conditions

– Is it a motor load (ايه سي-3) or resistive load (ايه سي-1)?

– Does the ambient temperature exceed 40°C? (Affects rated current)

– Is the starting frequency high? (Affects electrical life)

Step 2: Calculate or Confirm Load Current

تحميل المحرك: Ie = Rated power (kW) × 1000 / (√3 × Ue × cosφ × η)

(Ue: الجهد المقنن; cosφ: Power factor; η: Efficiency)

Resistive Load: Ie = Rated power (kW) × 1000 / Ue

Step 3: Select Contactor Specifications

1. Current Rating: Choose a rating ≥ calculated current and ≥ 400A
2. Voltage Rating: Rated voltage ≥ maximum system voltage (على سبيل المثال, 500V class for 380V systems)
3. Pole Selection: 3 poles for three-phase systems (LC1E400 default); 4 poles optional for special needs (على سبيل المثال, سلسلة LC1E40004)

Step 4: Select Control Coil Parameters

– Choose coil voltage based on control circuit power supply (على سبيل المثال, 220الخامس و, 110الخامس و)

– Ensure frequency matching (50Hz or 60Hz)

Step 5: Select Auxiliary Contact Configuration

Standard Configuration: 3NO main contacts

Optional Auxiliary Contacts: 1لا + 1نورث كارولاينا (على سبيل المثال, LC1E400M7N) to meet control circuit requirements

– Add LA series auxiliary contact blocks if standard configuration is insufficient

ثالثا. Key Parameter Matching Principles

1. المطابقة الحالية

تحميل المحرك: Ie (المقاولين) ≥ Ie (Motor) × (1.2~1.5)

– Direct starting: Factor = 1.5

– Star-delta starting: Factor = 0.58

– Frequent starting/stopping or heavy load: Factor = 1.5~2.0

2. مطابقة الجهد

– Rated insulation voltage ≥ maximum system voltage

– Control coil voltage must match the control circuit

3. Utilization Category Matching

ايه سي-3: Suitable for motor starting, running, and stopping (typical application of LC1E400)

– Power range: 220كيلو واط عند 415 فولت إلى 280 كيلو واط عند 690 فولت

ايه سي-1: Suitable for non-inductive loads (على سبيل المثال, resistance furnaces, lighting) with higher current capacity (500أ)

1. Selection Example

سيناريو: Select a contactor to control a 380V, 250kW three-phase asynchronous motor (direct starting, frequent starting/stopping)

Calculation Steps:

1. Calculate motor rated current:

Ie = 250,000 / (√3 × 380 × 0.85 × 0.9) ≈ 495A

(Assume cosφ=0.85, η=0.9)

2. Determine safety factor: 1.5 for frequent starting/stopping

Selected current = 495A × 1.5 ≈ 743A

3. Conclusion: The LC1E400 (400أ) is insufficient; a larger model (على سبيل المثال, LC1E630) is recommended.
4. Correct Selection: LC1E630M7N (630أ, 220V AC coil)
5. Selection Notes
6. Environmental Factors

– Derate rated current if ambient temperature > 40°C (≈5% derating per 10°C increase)

– Consider derating for altitudes > 2000m

2. Coordination with Protection Devices

– Circuit breaker rated current ≥ Contactor rated current

– Thermal relay setting current should match the motor rated current

3. Life Considerations

– الحياة الكهربائية: 600,000 العمليات (ايه سي-3), 250,000 العمليات (ايه سي-1)

– الحياة الميكانيكية: 4,000,000 العمليات

– Choose a higher-rated or special-purpose contactor for frequent operation scenarios

1. ملخص

The core principles for selecting the Schneider LC1E400 contactor are “مطابقة الجهد, Current Margin, Category Compatibility, and Coil Adaptation”. Selection process:

1. Confirm load type and utilization category
2. Calculate load current and determine safety factor
3. Select appropriate current rating (≥ calculated value)
4. Match control coil voltage
5. Select auxiliary contact configuration
6. Verify coordination with protection devices

The LC1E400 is an ideal choice for motor control with power close to 200kW. For higher power or harsh load conditions, larger models such as the LC1E630 are recommended.

For product quotes, customs clearance services, or customized distribution box solutions, please contact me via WhatsApp for professional support