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LC1D18JD

LC1D18JD

Schneider LC1D18JD available at EU Automation. Get in touch today for a quick price.

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Manufacturer:	Schneider
Part number:	LC1D18JD

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Schneider Electric LC1D18JD is a TeSys D / TeSys Deca IEC, non-reversing 3‑pole contactor designed for dependable switching of three‑phase motors and resistive loads in industrial control panels. It features three normally open (3 NO) main power contacts with an AC‑3 rated operational current of 18 A at up to 440 V AC, and an AC‑1 rating of 32 A at up to 440 V AC, with power circuit capability up to 690 V AC (25…400 Hz) and up to 300 V DC. The control circuit uses a 12 V DC coil with integral suppression, helping to reduce transient effects in DC control systems. For signalling and interlocking, the contactor includes built-in auxiliary contacts (1 NO + 1 NC), including mechanically linked and mirror contact functionality to IEC requirements. Typical motor ratings include 7.5 kW at 380/400 V AC and 10 hp at 460/480 V AC (application dependent). The LC1D18JD is an open-type device with IP20 protection on the front face, suitable for mounting on DIN rail or a mounting plate, and uses screw clamp terminals for both power and control connections.

Typical applications

Switching and controlling three-phase motors in industrial machinery using a 12 V DC control supply
Contactor duty for conveyors, rollers and material-handling lines where reliable start/stop control is required
Pump control in process and utility systems (transfer, circulation and booster applications)
Fan and blower switching in ventilation and air-handling installations
Compressor motor control in refrigeration and cooling equipment panels
Motor control within packaging, bottling and end-of-line equipment control cabinets
Control of mixers, agitators and small drives in manufacturing and processing environments
Switching resistive loads such as industrial heaters and heating circuits within control panels
Remote isolation and load switching in automation panels driven by PLC or control relays with 12 V DC outputs
Use as the main power contactor in compact motor starters and panel assemblies requiring a 3-pole, normally-open power path

Specification	Description
Manufacturer	Schneider Electric
Part Number	LC1D18JD
Series / Range	TeSys Deca (LC1D)
Product Type	IEC power contactor (non-reversing), open type with front protective cover
Typical Use	Switching and control of three-phase motors and resistive loads in industrial control panels
Poles	3-pole (3P)
Main Contact Configuration	3 x Normally Open (3 NO)
Rated Operational Voltage (Ue) – Power Circuit	Up to 690 V AC (25…400 Hz); up to 300 V DC
Rated Operational Current (Ie) – AC-3	18 A (≤ 440 V AC, at 60 °C ambient)
Rated Operational Current (Ie) – AC-3e	18 A (≤ 440 V AC, at 60 °C ambient)
Rated Operational Current (Ie) – AC-1	32 A (≤ 440 V AC, at 60 °C ambient)
Motor Power (AC-3)	4 kW (220…230 V), 7.5 kW (380…400 V), 9 kW (415…440 V), 10 kW (500 V), 10 kW (660…690 V)
Motor Power (AC-4)	4 kW (400 V)
Maximum Horsepower Rating	1 hp (115 V 1φ), 3 hp (230/240 V 1φ), 5 hp (200/208 V 3φ), 5 hp (230/240 V 3φ), 10 hp (460/480 V 3φ), 15 hp (575/600 V 3φ)
Control Circuit Type	DC (standard)
Coil Voltage (Uc)	12 V DC
Coil Technology	Integral suppression device fitted
Control Voltage Limits (DC)	Drop-out: 0.1…0.25 Uc; Operational: 0.7…1.25 Uc (−40…60 °C), 1…1.25 Uc (60…70 °C)
Inrush / Hold Power (at 20 °C)	5.4 W inrush; 5.4 W hold
Operating Time	Closing: 53.55…72.45 ms; Opening: 16…24 ms
Time Constant	28 ms
Maximum Operating Rate	3600 cycles/hour (at 60 °C)
Auxiliary Contacts	1 NO + 1 NC (mechanically linked); mirror contact function on 1 NC (per IEC 60947-4-1)
Minimum Switching Voltage (Signalling)	17 V
Minimum Switching Current (Signalling)	5 mA
Signalling Circuit Frequency	25…400 Hz
Non-overlap Time (Auxiliary)	1.5 ms on energisation; 1.5 ms on de-energisation
Insulation Resistance (Signalling)	> 10 MΩ
Rated Insulation Voltage (Ui)	Power circuit: 690 V (IEC), 600 V (UL/CSA); Signalling circuit: 690 V (IEC), 600 V (UL/CSA)
Rated Impulse Withstand (Uimp)	6 kV
Overvoltage Category	III
Pollution Degree	3
Conventional Free-air Thermal Current (Ith)	Power circuit: 32 A (60 °C); Signalling circuit: 10 A (60 °C)
Rated Making Capacity (Irms)	Power circuit: 300 A at 440 V; Signalling: 140 A AC, 250 A DC
Rated Breaking Capacity	300 A at 440 V (power circuit)
Short-time Withstand Current (Icw)	Power: 145 A (10 s), 240 A (1 s), 84 A (1 min), 40 A (10 min) at 40 °C; Signalling: 100 A (1 s), 120 A (500 ms), 140 A (100 ms)
Associated Fuse Rating	Signalling: 10 A gG; Power: 50 A gG (Type 1), 35 A gG (Type 2) up to 690 V
Average Impedance	2.5 mΩ (power circuit, Ith 32 A, 50 Hz)
Power Dissipation per Pole	2.5 W (AC-1); 0.8 W (AC-3 / AC-3e)
Mechanical Durability	30 million cycles
Electrical Durability	1.65 million cycles (18 A AC-3 / AC-3e ≤ 440 V); 1 million cycles (32 A AC-1 ≤ 440 V)
Mounting	DIN rail or plate mounting
Terminals	Screw clamp terminals (power and control)
Control Wiring Capacity	Flexible or solid: 1…4 mm² (with/without cable end); certain flexible with ferrule up to 2.5 mm² (per terminal arrangement)
Power Wiring Capacity	Flexible or solid: 1.5…6 mm² (without cable end); flexible with ferrule typically 1…6 mm² (terminal dependent)
Tightening Torque	1.7 N·m (power and control screw clamp terminals)
IP Rating	IP20 (front face)
Protective Treatment	TH (damp heat resistant design)
Permissible Ambient Temperature (Operation)	−40…60 °C; 60…70 °C with derating
Ambient Temperature (Storage)	−60…80 °C
Operating Altitude	0…3000 m
Fire Resistance	850 °C (per IEC test method)
Flammability Rating	V1 (UL 94)
Dimensions (H × W × D)	77 mm × 45 mm × 95 mm
Net Weight	0.49 kg
Standards	IEC 60947-4-1, IEC 60947-5-1, EN 60947-4-1, EN 60947-5-1, UL 508, CSA C22.2 No 14, IEC 60335-1

What type of device is this and what does it do?

This is a 3‑pole, non‑reversing power contactor designed to switch electrical loads—most commonly three‑phase motors (start/stop control) and resistive loads—using a low‑voltage DC control signal.

What control voltage does the coil require?

It uses a 12 V DC control coil (Uc = 12 VDC).

Does the coil include built-in surge suppression?

Yes. The coil technology includes an integral suppression device, which helps reduce switching transients in DC control circuits.

How many main poles and what is the main contact arrangement?

It is a 3‑pole (3P) contactor with 3 normally open (3 NO) main power contacts.

Are auxiliary contacts included?

Yes. It includes 1 NO + 1 NC auxiliary contact set. The auxiliary contacts are mechanically linked, and the NC auxiliary is specified as a mirror contact type.

What current ratings is it designed for?

Rated operational current is 18 A in AC‑3 duty at up to 440 V AC, and 32 A in AC‑1 duty at up to 440 V AC (at 60 °C reference conditions).

Which utilisation categories can it be used for?

It is specified for AC‑1, AC‑3, AC‑3e and AC‑4 utilisation categories, covering resistive loads and a range of motor switching duties.

What motor power can it handle in typical three-phase applications?

Typical AC‑3 motor ratings include 4 kW at 220–230 V, 7.5 kW at 380–400 V, 9 kW at 415–440 V, and 10 kW at 500 V and 660–690 V (50/60 Hz).

Can it be used on higher system voltages?

The power circuit is rated for system voltages up to 690 V AC (25–400 Hz). It is also rated up to 300 V DC on the power circuit.

What mounting options are supported?

It is designed for mounting on a DIN rail or onto a plate, which makes it suitable for standard control panels.

What are the physical dimensions?

Approximate overall dimensions are 77 mm (height) × 45 mm (width) × 95 mm (depth), with a net weight of about 0.49 kg.

What type of terminal connections does it use and what wire sizes are supported?

It uses screw clamp terminals. Control terminals accept 1–4 mm² (with ferrules up to 2.5 mm² depending on the terminal), and power terminals accept 1.5–6 mm² (with ferrules up to 4 mm² depending on the terminal).

What tightening torque is recommended for the terminals?

The specified tightening torque is 1.7 N·m for both power and control screw clamp terminals.

How fast does it operate when switching?

Typical operating times are approximately 53.55–72.45 ms for closing and 16–24 ms for opening.

What environmental and protection characteristics does it have?

It has IP20 protection on the front face and is specified for operation in ambient air temperatures from -40 °C to +60 °C (with derating up to +70 °C).

Typical applications

Switching and controlling three-phase motors in industrial machinery using a 12 V DC control supply
Contactor duty for conveyors, rollers and material-handling lines where reliable start/stop control is required
Pump control in process and utility systems (transfer, circulation and booster applications)
Fan and blower switching in ventilation and air-handling installations
Compressor motor control in refrigeration and cooling equipment panels
Motor control within packaging, bottling and end-of-line equipment control cabinets
Control of mixers, agitators and small drives in manufacturing and processing environments
Switching resistive loads such as industrial heaters and heating circuits within control panels
Remote isolation and load switching in automation panels driven by PLC or control relays with 12 V DC outputs
Use as the main power contactor in compact motor starters and panel assemblies requiring a 3-pole, normally-open power path

Specification	Description
Manufacturer	Schneider Electric
Part Number	LC1D18JD
Series / Range	TeSys Deca (LC1D)
Product Type	IEC power contactor (non-reversing), open type with front protective cover
Typical Use	Switching and control of three-phase motors and resistive loads in industrial control panels
Poles	3-pole (3P)
Main Contact Configuration	3 x Normally Open (3 NO)
Rated Operational Voltage (Ue) – Power Circuit	Up to 690 V AC (25…400 Hz); up to 300 V DC
Rated Operational Current (Ie) – AC-3	18 A (≤ 440 V AC, at 60 °C ambient)
Rated Operational Current (Ie) – AC-3e	18 A (≤ 440 V AC, at 60 °C ambient)
Rated Operational Current (Ie) – AC-1	32 A (≤ 440 V AC, at 60 °C ambient)
Motor Power (AC-3)	4 kW (220…230 V), 7.5 kW (380…400 V), 9 kW (415…440 V), 10 kW (500 V), 10 kW (660…690 V)
Motor Power (AC-4)	4 kW (400 V)
Maximum Horsepower Rating	1 hp (115 V 1φ), 3 hp (230/240 V 1φ), 5 hp (200/208 V 3φ), 5 hp (230/240 V 3φ), 10 hp (460/480 V 3φ), 15 hp (575/600 V 3φ)
Control Circuit Type	DC (standard)
Coil Voltage (Uc)	12 V DC
Coil Technology	Integral suppression device fitted
Control Voltage Limits (DC)	Drop-out: 0.1…0.25 Uc; Operational: 0.7…1.25 Uc (−40…60 °C), 1…1.25 Uc (60…70 °C)
Inrush / Hold Power (at 20 °C)	5.4 W inrush; 5.4 W hold
Operating Time	Closing: 53.55…72.45 ms; Opening: 16…24 ms
Time Constant	28 ms
Maximum Operating Rate	3600 cycles/hour (at 60 °C)
Auxiliary Contacts	1 NO + 1 NC (mechanically linked); mirror contact function on 1 NC (per IEC 60947-4-1)
Minimum Switching Voltage (Signalling)	17 V
Minimum Switching Current (Signalling)	5 mA
Signalling Circuit Frequency	25…400 Hz
Non-overlap Time (Auxiliary)	1.5 ms on energisation; 1.5 ms on de-energisation
Insulation Resistance (Signalling)	> 10 MΩ
Rated Insulation Voltage (Ui)	Power circuit: 690 V (IEC), 600 V (UL/CSA); Signalling circuit: 690 V (IEC), 600 V (UL/CSA)
Rated Impulse Withstand (Uimp)	6 kV
Overvoltage Category	III
Pollution Degree	3
Conventional Free-air Thermal Current (Ith)	Power circuit: 32 A (60 °C); Signalling circuit: 10 A (60 °C)
Rated Making Capacity (Irms)	Power circuit: 300 A at 440 V; Signalling: 140 A AC, 250 A DC
Rated Breaking Capacity	300 A at 440 V (power circuit)
Short-time Withstand Current (Icw)	Power: 145 A (10 s), 240 A (1 s), 84 A (1 min), 40 A (10 min) at 40 °C; Signalling: 100 A (1 s), 120 A (500 ms), 140 A (100 ms)
Associated Fuse Rating	Signalling: 10 A gG; Power: 50 A gG (Type 1), 35 A gG (Type 2) up to 690 V
Average Impedance	2.5 mΩ (power circuit, Ith 32 A, 50 Hz)
Power Dissipation per Pole	2.5 W (AC-1); 0.8 W (AC-3 / AC-3e)
Mechanical Durability	30 million cycles
Electrical Durability	1.65 million cycles (18 A AC-3 / AC-3e ≤ 440 V); 1 million cycles (32 A AC-1 ≤ 440 V)
Mounting	DIN rail or plate mounting
Terminals	Screw clamp terminals (power and control)
Control Wiring Capacity	Flexible or solid: 1…4 mm² (with/without cable end); certain flexible with ferrule up to 2.5 mm² (per terminal arrangement)
Power Wiring Capacity	Flexible or solid: 1.5…6 mm² (without cable end); flexible with ferrule typically 1…6 mm² (terminal dependent)
Tightening Torque	1.7 N·m (power and control screw clamp terminals)
IP Rating	IP20 (front face)
Protective Treatment	TH (damp heat resistant design)
Permissible Ambient Temperature (Operation)	−40…60 °C; 60…70 °C with derating
Ambient Temperature (Storage)	−60…80 °C
Operating Altitude	0…3000 m
Fire Resistance	850 °C (per IEC test method)
Flammability Rating	V1 (UL 94)
Dimensions (H × W × D)	77 mm × 45 mm × 95 mm
Net Weight	0.49 kg
Standards	IEC 60947-4-1, IEC 60947-5-1, EN 60947-4-1, EN 60947-5-1, UL 508, CSA C22.2 No 14, IEC 60335-1

What type of device is this and what does it do?

What control voltage does the coil require?

It uses a 12 V DC control coil (Uc = 12 VDC).

Does the coil include built-in surge suppression?

Yes. The coil technology includes an integral suppression device, which helps reduce switching transients in DC control circuits.

How many main poles and what is the main contact arrangement?

It is a 3‑pole (3P) contactor with 3 normally open (3 NO) main power contacts.

Are auxiliary contacts included?

Yes. It includes 1 NO + 1 NC auxiliary contact set. The auxiliary contacts are mechanically linked, and the NC auxiliary is specified as a mirror contact type.

What current ratings is it designed for?

Rated operational current is 18 A in AC‑3 duty at up to 440 V AC, and 32 A in AC‑1 duty at up to 440 V AC (at 60 °C reference conditions).

Which utilisation categories can it be used for?

It is specified for AC‑1, AC‑3, AC‑3e and AC‑4 utilisation categories, covering resistive loads and a range of motor switching duties.

What motor power can it handle in typical three-phase applications?

Typical AC‑3 motor ratings include 4 kW at 220–230 V, 7.5 kW at 380–400 V, 9 kW at 415–440 V, and 10 kW at 500 V and 660–690 V (50/60 Hz).

Can it be used on higher system voltages?

The power circuit is rated for system voltages up to 690 V AC (25–400 Hz). It is also rated up to 300 V DC on the power circuit.

What mounting options are supported?

It is designed for mounting on a DIN rail or onto a plate, which makes it suitable for standard control panels.

What are the physical dimensions?

Approximate overall dimensions are 77 mm (height) × 45 mm (width) × 95 mm (depth), with a net weight of about 0.49 kg.

What type of terminal connections does it use and what wire sizes are supported?

What tightening torque is recommended for the terminals?

The specified tightening torque is 1.7 N·m for both power and control screw clamp terminals.

How fast does it operate when switching?

Typical operating times are approximately 53.55–72.45 ms for closing and 16–24 ms for opening.

What environmental and protection characteristics does it have?

It has IP20 protection on the front face and is specified for operation in ambient air temperatures from -40 °C to +60 °C (with derating up to +70 °C).

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LC1D18JD

Schneider LC1D18JD available at EU Automation. Get in touch today for a quick price.

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