is a crucial component in electrical systems, known for its reliability, efficiency, and safety features. In this article, we will delve into the details of Schneider LC1D12B7 Contactor, exploring its features, applications, advantages, installation guide, maintenance tips, customer reviews, and more.
Understanding the Purpose of a Contactor
What is a contactor?
A contactor is an electromechanical device used to make or break electrical connections. It is primarily designed to control electric motors and power circuits.
Importance of contactors in electrical systems
Contactors play a vital role in ensuring the smooth operation of electrical systems by managing the flow of electricity to various components and machinery.
is designed for use in AC-3 applications up to 440V. It has a rated operational current of 12A and a coil voltage of 24V AC.
Design and build
The contactor features a compact and robust design, making it suitable for diverse industrial applications. It is built to withstand high levels of electrical stress and environmental conditions.
Compatibility
The Schneider LC1D12B7 Contactor is compatible with a wide range of electrical systems, offering versatility and ease of integration.
Applications
Schneider LC1D12B7 Contactor finds extensive use in various industries and applications, including:
Industrial machinery: Such as pumps, conveyors, and compressors.
HVAC systems: For controlling heating, ventilation, and air conditioning equipment.
Elevators and escalators: Ensuring smooth and reliable operation of vertical transportation systems.
Advantages
Reliability
Schneider LC1D12B7 Contactor is renowned for its reliability, providing consistent performance even in demanding environments.
Efficiency
The contactor offers efficient operation, minimizing energy wastage and optimizing the performance of electrical systems.
Safety features
With built-in safety features such as overload protection and arc suppression, Schneider LC1D12B7 Contactor ensures the safety of both equipment and personnel.
Installation Guide
Precautions
Before installing the contactor, ensure that the power supply is disconnected to prevent any accidents or injuries.
Step-by-step installation process
Mount the contactor securely on a suitable surface using the provided mounting holes.
Connect the control circuit wires to the appropriate terminals as per the wiring diagram.
Connect the power supply wires to the main terminals of the contactor.
Verify the connections and tighten the terminal screws to ensure proper contact.
Reconnect the power supply and test the operation of the contactor.
Power circuit: <= 690 V AC 25…400 Hz Power circuit: <= 300 V DC
[Ie] rated operational current
25 A (at <60 °C) at <= 440 V AC AC-1 for power circuit 12 A (at <60 °C) at <= 440 V AC AC-3 for power circuit 12 A (at <60 °C) at <= 440 V AC AC-3e for power circuit
[Uc] control circuit voltage
24 V AC 50/60 Hz
Complementary
Motor power kW
3 kW at 220…230 V AC 50/60 Hz (AC-3) 5.5 kW at 380…400 V AC 50/60 Hz (AC-3) 5.5 kW at 415…440 V AC 50/60 Hz (AC-3) 7.5 kW at 500 V AC 50/60 Hz (AC-3) 7.5 kW at 660…690 V AC 50/60 Hz (AC-3) 3.7 kW at 400 V AC 50/60 Hz (AC-4) 3 kW at 220…230 V AC 50/60 Hz (AC-3e) 5.5 kW at 380…400 V AC 50/60 Hz (AC-3e) 5.5 kW at 415…440 V AC 50/60 Hz (AC-3e) 7.5 kW at 500 V AC 50/60 Hz (AC-3e) 7.5 kW at 660…690 V AC 50/60 Hz (AC-3e)
Motor power hp
0.5 hp at 115 V AC 50/60 Hz for 1 phase motors 2 hp at 230/240 V AC 50/60 Hz for 1 phase motors 3 hp at 200/208 V AC 50/60 Hz for 3 phases motors 3 hp at 230/240 V AC 50/60 Hz for 3 phases motors 7.5 hp at 460/480 V AC 50/60 Hz for 3 phases motors 10 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
25 A (at 60 °C) for power circuit 10 A (at 60 °C) for signalling circuit
Irms rated making capacity
250 A at 440 V for power circuit conforming to IEC 60947 140 A AC for signalling circuit conforming to IEC 60947-5-1 250 A DC for signalling circuit conforming to IEC 60947-5-1
Rated breaking capacity
250 A at 440 V for power circuit conforming to IEC 60947
[Icw] rated short-time withstand current
105 A 40 °C – 10 s for power circuit 210 A 40 °C – 1 s for power circuit 30 A 40 °C – 10 min for power circuit 61 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 40 A gG at <= 690 V coordination type 1 for power circuit 25 A gG at <= 690 V coordination type 2 for power circuit
Average impedance
2.5 mOhm – Ith 25 A 50 Hz for power circuit
Power dissipation per pole
0.36 W AC-3 1.56 W AC-1 0.36 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
2 Mcycles 12 A AC-3 at Ue <= 440 V 0.8 Mcycles 25 A AC-1 at Ue <= 440 V 2 Mcycles 12 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
Power circuit: screw clamp terminals 1 1…4 mm² – cable stiffness: flexible without cable end Power circuit: screw clamp terminals 2 1…4 mm² – cable stiffness: flexible without cable end Power circuit: screw clamp terminals 1 1…4 mm² – cable stiffness: flexible with cable end Power circuit: screw clamp terminals 2 1…2.5 mm² – cable stiffness: flexible with cable end Power circuit: screw clamp terminals 1 1…4 mm² – cable stiffness: solid without cable end Power circuit: screw clamp terminals 2 1…4 mm² – cable stiffness: solid without cable end 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
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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