The LC1D256K7 IEC Contactor by Schneider Electric is a reliable and efficient solution for 3-phase applications.
Product ModelLC1D256K7
Product ID31653
Stock on Request
Last updated: 8/29/2026
Key Features
1
FeatureHigh reliability and efficiency in 3-phase applications
2
FeatureNon-reversing operation for precise control
3
FeatureCompact design with lugs-ring terminals for easy installation
4
FeatureSuitable for 50/60Hz frequencies and 100VAC coil voltage
5
FeatureCompliant with IEC standards for global compatibility
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
Specifications may be subject to change without notice
Parameter
Value
Parameter
Value
Range of Product
TeSys Deca
Product or Component Type
Contactor
Device short name
LC1D
Contactor application
Motor controlResistive load
Utilisation category
AC-3AC-1AC-3e
Poles description
3P
[Ue] rated operational voltage
Power circuit <= 690 V AC 25...400 HzPower circuit <= 300 V DC
[Ie] rated operational current
25 A (at <140 °F (60 °C)) at <= 440 V AC AC-3 for power circuit40 A (at <140 °F (60 °C)) at <= 440 V AC AC-1 for power circuit25 A (at <140 °F (60 °C)) at <= 440 V AC AC-3e for power circuit
[Uc] control circuit voltage
100 V AC 50/60 Hz
Motor power kW
5.5 kW at 220...230 V AC 50/60 Hz11 kW at 380...400 V AC 50/60 Hz11 kW at 415...440 V AC 50/60 Hz15 kW at 500 V AC 50/60 Hz15 kW at 660...690 V AC 50/60 Hz
Maximum Horse Power Rating
3 hp at 230/240 V AC 50/60 Hz for 1 phase motors2 hp at 115 V AC 50/60 Hz for 1 phase motors7.5 hp at 230/240 V AC 50/60 Hz for 3 phase motors15 hp at 460/480 V AC 50/60 Hz for 3 phase motors20 hp at 575/600 V AC 50/60 Hz for 3 phase motors7.5 hp at 200/208 V AC 50/60 Hz for 3 phase motors
compatibility code
LC1D
Pole contact composition
3 NO
Protective cover
With
[Ith] conventional free air thermal current
10 A (at 140 °F (60 °C)) for signalling circuit40 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 60947-5-1450 A at 440 V for power circuit conforming to IEC 60947
Rated breaking capacity
450 A at 440 V for power circuit conforming to IEC 60947
[Icw] rated short-time withstand current
240 A 104 °F (40 °C) - 10 s for power circuit380 A 104 °F (40 °C) - 1 s for power circuit50 A 104 °F (40 °C) - 10 min for power circuit120 A 104 °F (40 °C) - 1 min 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 60947-5-163 A gG at <= 690 V coordination type 1 for power circuit40 A gG at <= 690 V coordination type 2 for power circuit
Average impedance
2 mOhm - Ith 40 A 50 Hz for power circuit
Power dissipation per pole
3.2 W AC-11.25 W AC-31.25 W AC-3e
[Ui] rated insulation voltage
Power circuit 690 V IEC 60947-4-1Power circuit 600 V CSAPower circuit 600 V ULSignalling circuit 690 V IEC 60947-1Signalling circuit 600 V CSASignalling circuit 600 V UL
Overvoltage category
III
Pollution degree
3
[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
15 Mcycles
Electrical durability
1.65 Mcycles 25 A AC-3 <= 440 V1.4 Mcycles 40 A AC-1 <= 440 V1.65 Mcycles 25 A AC-3e <= 440 V
Control circuit type
AC 50/60 Hz
Coil technology
Without built-in suppressor module
Control circuit voltage limits
0.3...0.6 Uc -40...158 °F (-40...70 °C) drop-out AC 50/60 Hz0.8...1.1 Uc -40...140 °F (-40...60 °C) operational AC 50 Hz0.85...1.1 Uc -40...140 °F (-40...60 °C) operational AC 60 Hz1...1.1 Uc 140...158 °F (60...70 °C) operational AC 50/60 Hz
Inrush power in VA
70 VA 60 Hz cos phi 0.75 (at 68 °F (20 °C))70 VA 50 Hz cos phi 0.75 (at 68 °F (20 °C))
Hold-in power consumption in VA
7.5 VA 60 Hz cos phi 0.3 (at 68 °F (20 °C))7 VA 50 Hz cos phi 0.3 (at 68 °F (20 °C))
Heat dissipation
2...3 W at 50/60 Hz
Operating time
12...22 ms closing4...19 ms opening
Maximum operating rate
3600 cyc/h at 60 °C
Connections - terminals
Control circuit: lugs-ring terminals - external diameter: 0.3 in (8 mm)Power circuit: lugs-ring terminals - external diameter: 0.4 in (10 mm)
Tightening torque
Control circuit 15.05 lbf.in (1.7 N.m) lugs-ring terminals flat à 6 mm M3.5Control circuit 15.05 lbf.in (1.7 N.m) lugs-ring terminals Philips No 2 M3.5Power circuit 22.1 lbf.in (2.5 N.m) lugs-ring terminals flat à 8 mm M4Power circuit 22.1 lbf.in (2.5 N.m) lugs-ring terminals Philips No 2 M4Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals pozidriv No 2Power circuit 22.1 lbf.in (2.5 N.m) screw clamp terminals pozidriv No 2
1.5 ms on de-energisation between NC and NO contact1.5 ms on energisation between NC and NO contact
Mounting Support
RailPlate
Standards
CSA C22.2 No 14EN 60947-4-1EN 60947-5-1IEC 60947-4-1IEC 60947-5-1UL 60947-4-1IEC 60335-1:Clause 30.2IEC 60335-2-40:Annex JJUL 60335-2-40:Annex JJCSA C22.2 No 60947-4-1
Product Certifications
ULCCCCSAMarineUKCAEACCB Scheme
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 8 Gn for 11 ms)
