Contator Schneider LC1G475KUEC de 3 pólos

3‑pole contactor from domestic TeSys Giga series, AC‑3 475A/440V, coil 100–250V AC/DC wide voltage, contatos auxiliares padrão 1NO+1NC. Suitable for high‑power motor control and power switching. Supports contact wear diagnosis and can be used with LR9G series thermal relays.

1 Parâmetros Básicos & Naming Explanation

2 Key Performance Data

3 Aplicativos & Características

Aplicativos

Partida direta, forward/reverse control, star‑delta starting of high‑power three‑phase asynchronous motors

Industrial power switching and distribution system control

Inductive load control with power factor ≥ 0.95

Heavy‑duty industries: construção elétrica, metalurgia, químico, mineração, etc..

Principais recursos

1. Alto desempenho: Up to 620A at AC‑3, 1050A at AC‑1 for heavy‑duty applications
2. Smart diagnosis: Built‑in contact wear detection for predictive maintenance
3. Wide‑voltage coil: 100–250V AC/DC reduces spare parts inventory
4. Projeto modular: Suporta vários acessórios (aux contacts, mechanical interlock, supressor de surto, etc.)
5. Seguro & confiável: Excellent arc extinguishing, adequado para ambientes industriais agressivos

4 Montagem & Wiring Information

Dimensões de montagem (China version LC1G475C)

Largura: aprox.. 140milímetros

Altura: aprox.. 270milímetros

Profundidade: aprox.. 150milímetros

Montagem: Standard 35mm DIN rail or screw mounting

Peso: aprox.. 10.6kg

Requisitos de fiação

1. Terminais do circuito principal: Suitable for copper/aluminum cables; crimping lugs recommended
2. Terminais do circuito de controle: Suitable for 1.5–2.5mm² control cables
3. Liberação: ≥50mm left & certo, ≥100mm top & bottom for proper heat dissipation

5 Compatibilidade de acessórios & Matching Products

6 Cross‑Brand Alternatives

7 Instalação & Commissioning Tips

1. Pre‑installation inspection

Verify model, rated parameters and control supply match

Check for physical damage, oxidação de contato

Ensure flat mounting surface and secure rail

2. Installation steps

Trilho DIN: Align to 35mm rail, press firmly until locked

Montagem de parafuso: Use M6 screws, torque 8–10N·m

Fiação: Main circuit first, then control circuit; observe terminal torque

3. Comissionamento & testando

No‑load test: Apply control power; check smooth operation, ruído anormal

Teste de carga: Run under load; monitor current, temperatura da bobina

Aux contact test: Verify NO/NC switching and contact resistance

4. Maintenance recommendations

Inspecione regularmente o desgaste dos contatos; replace if wear >1milímetros

Clean arc chamber; remove dust and metal particles

Check coil insulation resistance ≥1MΩ

Retighten all terminals to avoid overheating

8 Notas de seleção

1. Select contactor according to load type (AC‑3/AC‑4/AC‑1)
2. Para controle de motor: Contactor rated current ≥ 1.1 × motor rated current
3. For frequent starting/reversing (AC‑4): Derate by 20–30%
4. For unstable control supply: Prefer wide‑voltage coil models
5. When used with thermal relay: Ensure matching ratings

Installation Manual – Schneider Domestic TeSys LC1G475KUEC 3‑Pole Contactor

Doc No.: DOCA0189ZH‑04 (based on official Schneider TeSys Giga installation guide)

Applicable model: LC1G475KUEC (domestic TeSys Giga 3‑pole contactor)

Versão: Janeiro 2023

⚠️ Safety Warnings (Deve ler)

1 Visão geral do produto

1.1 Product Identification

Modelo: LC1G475KUEC

Série: Domestic TeSys Giga (LC1G)

Poloneses: 3P (3NÃO, 3‑pole normally open)

Corrente nominal: AC‑3 475A (440V)

Tensão da bobina: 100–250V CA/CC (ampla tensão)

Contatos auxiliares: 1NO+1NC standard

Standards: IEC 60947‑4‑1, GB/T 14048.4

Versão: China version (suffix C; no UL certification)

1.2 Dimensões (Unidade: milímetros)

2 Pre‑Installation Preparation

2.1 Ferramentas

chave Phillips (PH3)

Hex key (per fixing screw size)

Chave de torque (5–20N·m range)

Wire stripper (1.5–2.5mm² control & large main cables)

Crimping tool (for cable lugs)

Multímetro (coil resistance & insulation check)

Spirit level

2.2 Materiais

Mounting plate (metal, thickness ≥3mm, plano, burr‑free)

M6 mounting screws (min. 4 peças)

Cable lugs (for main circuit cables)

Control cable (1.5–2.5mm² copper)

Main cable (≥150mm² copper recommended)

Insulation tape / heat‑shrink tubing

Marker pen

2.3 Requisitos Ambientais

2.4 Inspeção de Produto

1. Check packaging and transport damage
2. Verify model label (LC1G475KUEC)
3. Inspect contacts for oxidation, pitting, foreign matter
4. Manually actuate armature; check smooth operation
5. Meça a resistência da bobina com multímetro
6. Test auxiliary contact switching

3 Procedimento de instalação (Surface Mounting)

Observação: Domestic LC1G475KUEC supports surface mounting only; not for DIN rail.

3.1 Mounting Plate Drilling (Opcional)

1. Mark holes at 100×120mm
2. Drill diameter: φ6.5mm (for M6)
3. Deburr after drilling

3.2 Hanging & Consertando

1. Hang: Locate bottom hanging holes onto mounting plate pins/screws
2. Preliminary fix: Hand‑tighten top M6 screws
3. Final fix: Torque all 4 screws to 3±0.3N·m (top‑down, diagonal)
4. Level check: Ensure inclination ≤30°

3.3 Instalação de acessórios (Aux Contacts / Intertravamento Mecânico)

1. Contatos auxiliares

Disconnect control power

Align and push into top slot until click

Verify secure locking

2. Mechanical interlock

Keep ≥50mm between two contactors

Mount interlock on sides

Adjust to prevent simultaneous closing

Test manually

4 Wiring Procedure

4.1 Pre‑Wiring Notes

1. Confirm all power disconnected
2. Main cables must use proper crimp lugs
3. Control cable strip length: ~8–10mm
4. Sequência: Main circuit first, then control

4.2 Fiação do Circuito Principal (3P, L1/L2/L3 → T1/T2/T3)

1. Open main terminal cover
2. Insert lugged cables
3. Torque:

Copper: 12±1N·m

Aluminum: 14±1N·m (with anti‑oxidant)

4. Securely tighten; check by gentle pull
5. Close terminal cover

4.3 Fiação do Circuito de Controle (Coil A1/A2, Aux NO/NC)

1. Open control terminal cover
2. Bobina:

A1: Control supply +/Line

A2: Control supply –/Neutral

3. Aux contacts:

NÃO: 13–14 (contenção, indication)

NC: 21–22 (interlock, falta)

4. Control terminal torque: 2±0.2N·m
5. Close cover

4.4 Diagrama de fiação

5 Mounting with Thermal Relay (LR9G475)

5.1 Direct Installation

1. Confirm matching: LC1G475KUEC + LR9G475
2. Align thermal relay to top slot
3. Push down until click
4. Check secure mounting
5. Connect pre‑installed busbars
6. Torque busbar screws: 8±0.8N·m

5.2 Notas de fiação

1. Principal: Power → Contactor → Thermal relay → Motor
2. Controlar: Thermal relay NC (95–96) in series with contactor coil
3. Set thermal relay current to motor rated current

6 Comissionamento & Teste

6.1 No‑Load Test

1. Apply control power (main open)
2. Check smooth closing, no abnormal noise
3. Verify aux contact switching
4. Check rapid opening
5. Repeat 3–5 times

6.2 Teste de carga

1. Apply main power
2. Start motor; check current within rating
3. Monitor coil temperature ≤60°C after 1h
4. Check terminal temperature ≤70°C (infrared)
5. Simulate overload; verify relay trip

6.3 Contact Wear Diagnosis (LC1G Feature)

1. Monitor via auxiliary contacts
2. Warning when wear >1milímetros
3. Replace contactor promptly

7 Manutenção & Serviço

7.1 Routine Inspection (todo 6 meses)

1. De‑energize; inspect for dirt, dano
2. Clean arc chamber (compressed air ≤0.3MPa)
3. Check contact resistance ≤500μΩ
4. Check coil insulation ≥1MΩ (500V megô)
5. Retighten terminals
6. Test operation

7.2 Replacement Schedule

7.3 Solução de problemas

8 Segurança & Ambiente

8.1 Safe Disposal

1. Disconnect all power before scrapping
2. Remove all wiring
3. Separate metal & plastic for recycling
4. Contacts contain silver alloy; recycle as precious metal

8.2 Environmental Compliance

Compatível com RoHS; free of Pb, Hg, etc..

Plastic housing recyclable

Dispose per local regulations

9 Appendix – Technical Data