SchneiderContactors and Protection Relays

LC1DT20UD

Name: LC1DT20UD
Brand: Schneider
SKU: LC1DT20UD

High-reliability 4P contactor for resistive loads, featuring 20A current rating and 440V AC rating.

Product ModelLC1DT20UD

Product ID32920

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

1
Reliable PerformanceThe LC1DT20UD TeSys Deca Contactor ensures reliable performance with its high-quality design and robust construction.
2
Efficient OperationDesigned for efficient operation, this contactor minimizes energy consumption and maximizes system uptime.
3
Versatile ApplicationSuitable for a wide range of applications, including industrial control systems and HVAC systems, the LC1DT20UD is a versatile choice.
4
Easy InstallationFeaturing screw clamp terminals, the LC1DT20UD is easy to install and maintain, reducing downtime and increasing productivity.
5

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Range

TeSysTeSys Deca

Range of Product

TeSys Deca

Product or Component Type

Contactor

Device short name

LC1D

Contactor application

Resistive load

Utilisation category

AC-1

High Current RatingWith a current rating of 20A, the LC1DT20UD can handle demanding loads, making it an ideal choice for heavy-duty applications.

[Ue] rated operational voltage

Power circuit <= 690 V AC 25...400 HzPower circuit <= 300 V DC

[Ie] rated operational current

20 A (at <140 °F (60 °C)) at <= 440 V AC AC-1 for power circuit

[Uc] control circuit voltage

250 V DC

compatibility code

LC1D

Pole contact composition

4 NO

Protective cover

With

[Ith] conventional free air thermal current

10 A (at 140 °F (60 °C)) for signalling circuit20 A (at 140 °F (60 °C)) for power circuit

Irms rated making capacity

140 A AC for signalling circuit conforming to IEC 60947-5-1250 A DC for signalling circuit conforming to IEC 60947-5-1250 A at 440 V for power circuit conforming to IEC 60947

Rated breaking capacity

250 A at 440 V for power circuit conforming to IEC 60947

[Icw] rated short-time withstand current

30 A 104 °F (40 °C) - 10 min for power circuit61 A 104 °F (40 °C) - 1 min for power circuit105 A 104 °F (40 °C) - 10 s for power circuit210 A 104 °F (40 °C) - 1 s for power circuit100 A - 1 s for signalling circuit120 A - 500 ms for signalling circuit140 A - 100 ms for signalling circuit

Associated fuse rating

10 A gG for signalling circuit conforming to IEC 60947-5-125 A gG at <= 690 V coordination type 1 for power circuit20 A gG at <= 690 V coordination type 2 for power circuit

Average impedance

2.5 mOhm - Ith 20 A 50 Hz for power circuit

Power dissipation per pole

1.56 W AC-1

[Ui] rated insulation voltage

Power circuit 600 V CSAPower circuit 600 V ULSignalling circuit 690 V IEC 60947-1Signalling circuit 600 V CSASignalling circuit 600 V ULPower circuit 690 V IEC 60947-4-1

Overvoltage category

III

Pollution degree

[Uimp] rated impulse withstand voltage

6 kV IEC 60947

Safety reliability level

B10d = 1369863 cycles contactor with nominal load EN/ISO 13849-1B10d = 20000000 cycles contactor with mechanical load EN/ISO 13849-1

Mechanical durability

30 Mcycles

Control circuit type

DC standard

Coil technology

Built-in bidirectional peak limiting diode suppressor

Control circuit voltage limits

0.1...0.25 Uc -40...158 °F (-40...70 °C) drop-out DC0.7...1.25 Uc -40...140 °F (-40...60 °C) operational DC1...1.25 Uc 140...158 °F (60...70 °C) operational DC

Inrush power in W

5.4 W 68 °F (20 °C))

Hold-in power consumption in W

5.4 W 68 °F (20 °C)

Operating time

20 Â±20 % ms opening63 Â±15 % ms closing

Time constant

28 ms

Maximum operating rate

3600 cyc/h 140 °F (60 °C)

Connections - terminals

Control circuit: screw clamp terminals 2 0.002...0.004 inÂ² (1...2.5 mmÂ²) - cable stiffness: flexible with cable endControl circuit: screw clamp terminals 1 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: flexible without cable endControl circuit: screw clamp terminals 2 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: flexible without cable endControl circuit: screw clamp terminals 1 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: flexible with cable endControl circuit: screw clamp terminals 1 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: solid without cable endControl circuit: screw clamp terminals 2 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: solid without cable endPower circuit: screw clamp terminals 1 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: flexible without cable endPower circuit: screw clamp terminals 2 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: flexible without cable endPower circuit: screw clamp terminals 1 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: flexible with cable endPower circuit: screw clamp terminals 2 0.002...0.004 inÂ² (1...2.5 mmÂ²) - cable stiffness: flexible with cable endPower circuit: screw clamp terminals 1 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: solid without cable endPower circuit: screw clamp terminals 2 0.002...0.006 inÂ² (1...4 mmÂ²) - cable stiffness: solid without cable end

Tightening torque

Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals flat Ã 6 mmControl circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals Philips No 2Power circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals flat Ã 6 mmPower circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals Philips No 2Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals pozidriv No 2Power circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals pozidriv No 2

Auxiliary contact composition

1 NO + 1 NC

Auxiliary contacts type

Mechanically linked 1 NO + 1 NC IEC 60947-5-1Mirror contact 1 NC IEC 60947-4-1

Signalling circuit frequency

25...400 Hz

Minimum switching voltage

17 V for signalling circuit

Minimum switching current

5 mA for signalling circuit

Insulation resistance

> 10 MOhm for signalling circuit

Non-overlap time

1.5 ms on de-energisation between NC and NO contact1.5 ms on energisation between NC and NO contact

Mounting Support

PlateRail

Standards

CSA C22.2 No 14EN 60947-4-1EN 60947-5-1IEC 60947-4-1IEC 60947-5-1UL 508IEC 60335-1

Product Certifications

BVGLCSACCCLROS (Lloyds register of shipping)GOSTULDNVRINA

IP degree of protection

IP20 front face IEC 60529

Protective treatment

THIEC 60068-2-30

Climatic withstand

IACS E10 exposure to damp heat IEC 60947-1 Annex Q category D exposure to damp heat

Permissible ambient air temperature around the device

-40...140 °F (-40...60 °C)140...158 °F (60...70 °C) with derating

Operating altitude

0...9842.52 ft (0...3000 m)

Fire resistance

1562 °F (850 °C) IEC 60695-2-1

Flame retardance

V1 conforming to UL 94

Mechanical robustness

Vibrations contactor open 2 Gn, 5...300 Hz) Vibrations contactor closed 4 Gn, 5...300 Hz) Shocks contactor closed 15 Gn for 11 ms) Shocks contactor open 10 Gn for 11 ms)

Height

3.3 in (85 mm)

Width

1.8 in (45 mm)

Depth

3.9 in (99 mm)

Net Weight

0.805 lb(US) (0.365 kg)