Schneider LC1D40 3-Pole AC Contactor

Schneider TeSys D / TeSys Deca series, 3-pole with 3 main NO contacts. Designed for three-phase motors, AVAC, bombas de água, fans and other load control. It comes with built-in 1NO + 1NC auxiliar contatos (NC is mirror contact for safety circuits).

✅ Especificações principais

Poloneses: 3P (3 SEM contatos principais)

Rated operational current AC-3 @ 440V: 40 UM

Matched motor power @ 380/400V: 18.5 kW

Max operational voltage (Ué) for power circuit: 690 V

Corrente térmica convencional (É): 60 UM

Contatos auxiliares integrados: 1NÃO (14) + 1NC (22)

Montagem: 35 mm DIN rail or screw fixing

Dimensões gerais: W55 × H122 × D120 mm

Terminais: EverLink anti-loosening screw terminals (new version with suffix A)

Certificações: CCC, CEI 60947-4-1, UL, CSA, marine certification

✅ Model Suffix Definition (Exemplo de modelo completo: LC1D40AM7C)

UM: New Deca version (old version without A: LC1D40M7C, direto intercambiável)

M: 220 Bobina V CA (50/60 Hz)

F: 110 V e; P: 380 V e; B: 24 Em DC; BD: padrão 24 V DC coil

7: 50/60 hertz universais; C: China domestic version

Common stock models:

LC1D40AM7C (220VAC), LC1D40AF7C (110VAC), LC1D40AQ7C (380VAC), LC1D40ABD (24CCV)

✅ Matching Accessories

Relé de sobrecarga térmica: LRD3353C (adjustment range 23–32 A) para 18.5 motores kW

Bloco de contato auxiliar: LA1DN (expand auxiliary contacts)

Intertravamento mecânico: LA9D40 (for star-delta & forward/reverse interlock)

Coil surge suppressor: LA4DA

Time delay attachment, busbar connectors, etc..

✅ Seleção & Substituição

1. Old-to-new replacement: LC1D40 → new LC1D40A, dimensões idênticas, mounting holes and wiring, plug-and-play.
2. Adjacent frame size: smaller LC1D32; larger LC1D50.
3. Economy alternative: Easypact D3N LC1N40.
4. Equivalente nacional: CJX2-4011.

✅ Aplicações típicas

Fãs, bombas de água, compressores de ar, ar condicionado central, transportadores, arrancadores estrela-triângulo, forward/reverse control cabinets (AC-3 motor duty); also for AC-1 resistive loads (elementos de aquecimento).

✅ Installation Instructions

Torque: Main circuit terminals = 5 N·m; control circuit = 1.7 N·m

Max ambient temperature: 60 °C; max operating frequency: 3600 ciclos/hora

DC coil version requires polarity: A1 = positive, A2 = negative

Matched thermal relay for LC1D40 (18.5kW @ 380V): LRD3353C, setting range 23～32 A, Classe 10A

1. LRD3353C Overload Current Setting Table

1) Setting Rule (Obrigatório)

Set the thermal relay knob to motor nameplate full-load current (FLA), NOT the 40A contator avaliação.

380V 18.5kW 3-phase motor: corrente nominal ≈ 32 A → set knob directly to 32 UM (escala completa).

For fan-type motors, heavy starting & frequent jogging: set to 100%～105% of FLA; never exceed 115%.

Temperatura ambiente >40°C or enclosed cabinet: reduce setting by 5%～10%.

2) LC1D Series Contactor + LRD Thermal Relay Matching List

High-current older models (being upgraded to AKUE wide-voltage coil)

LC1D170, LC1D205, LC1D245, LC1D300, LC1D410

1. 4-Pole Models (LC1DT, AC-1 resistive loads: aquecimento, 3-fase 4 fios)

4NÃO Contatos Principais (LC1DTxxA)

LC1DT20A, LC1DT25A, LC1DT32A, LC1DT40A, LC1DT60A, LC1DT80A

2NÃO + 2NC Main Contacts (LC1Dxx8)

LC1D128, LC1D188, LC1D258, LC1D40008, LC1D65008

III. Coil Voltage Suffix Code

Bobinas CA (50/60hertz universais, sufixo 7)

B7: 24 V e

E7: 48 V e

F7: 110 V e

M7: 220 V e (mais comum)

P7: 230 V e

Q7: 380 V e

Bobinas CC (suffix D)

BD: 24 Em DC (bobina CC padrão)

DE: 48 Em DC

GD: 125 Em DC

End-of-model Letters

C = Domestic China TeSys Deca version (local stock)

A = New EverLink anti-loosening terminals; no A = old terminal version

✅ Full stock model examples:

LC1D40AM7C (220VAC), LC1D40AF7C (110VAC), LC1D40AQ7C (380VAC), LC1D40ABD (24CCV)

1. Reversing Contactors (LC2D, Forward/Reverse Control)

LC2D09A, LC2D12A, LC2D18A, LC2D25A, LC2D32A, LC2D40A, LC2D50A, LC2D65A, LC2D80A, LC2D95A

Built-in mechanical + electrical interlock; no extra LA9D40 required.

1. Full LRD Thermal Relay Matching List (for LC1D)
2. Low current range (0.1~32 A): LRD01C ~ LRD22C
3. 40A e acima (23~104 A): LRD33 series

LRD3353C: 23–32 A → LC1D40A (18.5 kW)

LRD3355C: 30–40 A → LC1D50A

LRD3357C: 37–50 A → LC1D65A

1. Regras de substituição
2. Old LC1D40M7C → new LC1D40AM7C: totalmente intercambiável (same footprint, montagem & fiação).
3. Older high-current LC1D115 / LC1D150 → upgrade to LC1D115AKUE / LC1D150AKUE (100–250V AC/DC wide-voltage coil).