Electricity powers our modern ensuring its efficient and safe distribution is paramount. In electrical systems, contactors play a crucial role in controlling the flow of electricity, making them indispensable components. Schneider Electric, a renowned name in the electrical industry, offers the LC1D18E7 Contactor, a reliable solution for various applications.
Understanding the Functionality of a Contactor
What is a contactor?
A contactor is an electrical device designed to control the flow of electricity in a circuit. It consists of a coil and contacts that open and close to allow or interrupt the flow of current.
Importance of contactors in electrical systems
Contactors are essential for controlling motors, lighting systems, heating elements, and other electrical loads. They provide a safe and reliable method for switching high currents, protecting equipment and ensuring smooth operation.
Power circuit: <= 690 V AC 25…400 Hz Power circuit: <= 300 V DC
[Ie] rated operational current
18 A (at <60 °C) at <= 440 V AC AC-3 for power circuit 32 A (at <60 °C) at <= 440 V AC AC-1 for power circuit 18 A (at <60 °C) at <= 440 V AC AC-3e for power circuit
[Uc] control circuit voltage
48 V AC 50/60 Hz
Complementary
Motor power kW
4 kW at 220…230 V AC 50/60 Hz (AC-3) 7.5 kW at 380…400 V AC 50/60 Hz (AC-3) 9 kW at 415…440 V AC 50/60 Hz (AC-3) 10 kW at 500 V AC 50/60 Hz (AC-3) 10 kW at 660…690 V AC 50/60 Hz (AC-3) 4 kW at 400 V AC 50/60 Hz (AC-4) 4 kW at 220…230 V AC 50/60 Hz (AC-3e) 7.5 kW at 380…400 V AC 50/60 Hz (AC-3e) 9 kW at 415…440 V AC 50/60 Hz (AC-3e) 10 kW at 500 V AC 50/60 Hz (AC-3e) 10 kW at 660…690 V AC 50/60 Hz (AC-3e)
Motor power hp
1 hp at 115 V AC 50/60 Hz for 1 phase motors 3 hp at 230/240 V AC 50/60 Hz for 1 phase motors 5 hp at 200/208 V AC 50/60 Hz for 3 phases motors 5 hp at 230/240 V AC 50/60 Hz for 3 phases motors 10 hp at 460/480 V AC 50/60 Hz for 3 phases motors 15 hp at 575/600 V AC 50/60 Hz for 3 phases motors
Compatibility code
LC1D
Pole contact composition
3 NO
Protective cover
With
[Ith] conventional free air thermal current
10 A (at 60 °C) for signalling circuit 32 A (at 60 °C) for power circuit
Irms rated making capacity
140 A AC for signalling circuit conforming to IEC 60947-5-1 250 A DC for signalling circuit conforming to IEC 60947-5-1 300 A at 440 V for power circuit conforming to IEC 60947
Rated breaking capacity
300 A at 440 V for power circuit conforming to IEC 60947
[Icw] rated short-time withstand current
145 A 40 °C – 10 s for power circuit 240 A 40 °C – 1 s for power circuit 40 A 40 °C – 10 min for power circuit 84 A 40 °C – 1 min for power circuit 100 A – 1 s for signalling circuit 120 A – 500 ms for signalling circuit 140 A – 100 ms for signalling circuit
Associated fuse rating
10 A gG for signalling circuit conforming to IEC 60947-5-1 50 A gG at <= 690 V coordination type 1 for power circuit 35 A gG at <= 690 V coordination type 2 for power circuit
Average impedance
2.5 mOhm – Ith 32 A 50 Hz for power circuit
Power dissipation per pole
2.5 W AC-1 0.8 W AC-3 0.8 W AC-3e
[Ui] rated insulation voltage
Power circuit: 690 V conforming to IEC 60947-4-1 Power circuit: 600 V CSA certified Power circuit: 600 V UL certified Signalling circuit: 690 V conforming to IEC 60947-1 Signalling circuit: 600 V CSA certified Signalling circuit: 600 V UL certified
Overvoltage category
III
Pollution degree
3
[Uimp] rated impulse withstand voltage
6 kV conforming to IEC 60947
Safety reliability level
B10d = 1369863 cycles contactor with nominal load conforming to EN/ISO 13849-1 B10d = 20000000 cycles contactor with mechanical load conforming to EN/ISO 13849-1
Mechanical durability
15 Mcycles
Electrical durability
1.65 Mcycles 18 A AC-3 at Ue <= 440 V 1 Mcycles 32 A AC-1 at Ue <= 440 V 1.65 Mcycles 18 A AC-3e at Ue <= 440 V
Control circuit type
AC at 50/60 Hz standard
Coil technology
Without built-in suppressor module
Control circuit voltage limits
0.3…0.6 Uc (-40…70 °C):drop-out AC 50/60 Hz 0.8…1.1 Uc (-40…60 °C):operational AC 50 Hz 0.85…1.1 Uc (-40…60 °C):operational AC 60 Hz 1…1.1 Uc (60…70 °C):operational AC 50/60 Hz
Inrush power in VA
70 VA 60 Hz cos phi 0.75 (at 20 °C) 70 VA 50 Hz cos phi 0.75 (at 20 °C)
Hold-in power consumption in VA
7.5 VA 60 Hz cos phi 0.3 (at 20 °C) 7 VA 50 Hz cos phi 0.3 (at 20 °C)
Heat dissipation
2…3 W at 50/60 Hz
Operating time
12…22 ms closing 4…19 ms opening
Maximum operating rate
3600 cyc/h 60 °C
Maximum operating rate
3600 cyc/h at 60 °C
Connections – terminals
Control circuit: screw clamp terminals 1 1…4 mm² – cable stiffness: flexible without cable end Control circuit: screw clamp terminals 2 1…4 mm² – cable stiffness: flexible without cable end Control circuit: screw clamp terminals 1 1…4 mm² – cable stiffness: flexible with cable end Control circuit: screw clamp terminals 2 1…2.5 mm² – cable stiffness: flexible with cable end Control circuit: screw clamp terminals 1 1…4 mm² – cable stiffness: solid without cable end Control circuit: screw clamp terminals 2 1…4 mm² – cable stiffness: solid without cable end Power circuit: screw clamp terminals 1 1.5…6 mm² – cable stiffness: flexible without cable end Power circuit: screw clamp terminals 2 1.5…6 mm² – cable stiffness: flexible without cable end Power circuit: screw clamp terminals 1 1…6 mm² – cable stiffness: flexible with cable end Power circuit: screw clamp terminals 2 1…4 mm² – cable stiffness: flexible with cable end Power circuit: screw clamp terminals 1 1.5…6 mm² – cable stiffness: solid without cable end Power circuit: screw clamp terminals 2 1.5…6 mm² – cable stiffness: solid without cable end
Tightening torque
Power circuit: 1.7 N.m – on screw clamp terminals – with screwdriver flat Ø 6 mm Power circuit: 1.7 N.m – on screw clamp terminals – with screwdriver Philips No 2 Control circuit: 1.7 N.m – on screw clamp terminals – with screwdriver flat Ø 6 mm Control circuit: 1.7 N.m – on screw clamp terminals – with screwdriver Philips No 2 Control circuit: 1.7 N.m – on screw clamp terminals – with screwdriver pozidriv No 2 Power circuit: 1.7 N.m – on screw clamp terminals – with screwdriver pozidriv No 2
Auxiliary contact composition
1 NO + 1 NC
Auxiliary contacts type
type mechanically linked 1 NO + 1 NC conforming to IEC 60947-5-1 type mirror contact 1 NC conforming to 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 contact 1.5 ms on energisation between NC and NO contact
Mounting support
Rail Plate
Environment
Standards
CSA C22.2 No 14 EN 60947-4-1 EN 60947-5-1 IEC 60947-4-1 IEC 60947-5-1 UL 60947-4-1 IEC 60335-1:Clause 30.2 IEC 60335-2-40:Annex JJ UL 60335-2-40:Annex JJ CSA C22.2 No 60947-4-1
Product certifications
UL CCC CSA Marine UKCA EAC CB Scheme
IP degree of protection
IP20 front face conforming to IEC 60529
Protective treatment
TH conforming to IEC 60068-2-30
Climatic withstand
conforming to IACS E10 exposure to damp heat conforming to IEC 60947-1 Annex Q category D exposure to damp heat
Permissible ambient air temperature around the device
-40…60 °C 60…70 °C with derating
Operating altitude
0…3000 m
Fire resistance
850 °C conforming to 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 open (10 Gn for 11 ms) Shocks contactor closed (15 Gn for 11 ms)
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