LC1G1854KUEN Schneider Electric | 305A 4-Pole Contactor 100-250V AC/DC
Introduction:
The LC1G1854KUEN is a 305A 4-pole contactor with 100-250V AC/DC coil. It features 1 NO/1 NC auxiliary contacts and 1000V rating.
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Schneider Electric LC1G1854KUEN Heavy Duty Contactor
Product Overview
A high-power switching device arrives as the LC1G1854KUEN from Schneider Electric. This contactor belongs to the LC1G185 series for industrial load control. The LC1G1854KUEN handles up to 305A of operational current reliably. Engineers use this contactor for power switching applications in demanding environments. Consequently, the LC1G1854KUEN suits motor control, lighting, and heating systems. The unit features a 4-pole configuration with 4 NO main contacts. Furthermore, it includes 1 NO and 1 NC auxiliary contacts for control signaling.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | Contactor |
| Series | LC1G185 |
| Part Number | LC1G1854KUEN |
| Number of Poles | 4 |
| Pole Configuration | 4 NO (4 Form A) |
| Contact Current Rating | 305 A |
| Contact Voltage | 1000V |
| Switching Voltage Max | 1000V AC, 460V DC |
| Coil Voltage | 100 to 250 V AC/DC |
| Control Circuit Voltage Uc | 100 to 250 V AC |
| Auxiliary Contact Configuration | 1 NO / 1 NC |
| Terminal Type | Busbar |
| Operate Time | 70 ms |
| Release Time | 50 ms |
| Mounting Type | Chassis Mount |
| Operating Temperature | -25°C to 60°C |
| Width | 140 mm |
| Depth | 193 mm |
| Length | 193 mm |
| Country of Origin | China |
| Better World Product | Yes |
Power Ratings and Switching Capability
The LC1G1854KUEN delivers exceptional power switching performance. Operational current Ie reaches 305A for heavy load handling capacity. Contact voltage rating reaches 1000V for high-voltage applications. Thus, the LC1G1854KUEN suits industrial power distribution systems. Maximum switching voltage reaches 1000V AC or 460V DC. Therefore, this contactor handles both AC and DC power circuits effectively.
The contactor operates reliably across a wide temperature range. Minimum operating temperature sits at -25°C for cold environments. Maximum operating temperature reaches 60°C for warm industrial settings. Thus, the LC1G1854KUEN works in diverse climate conditions. Proper ventilation around the contactor supports heat dissipation during heavy use.
Coil Specifications
The LC1G1854KUEN features a versatile coil design for broad compatibility. Coil voltage accepts both AC and DC from 100 to 250V. This wide voltage range eliminates the need for multiple coil variants. Consequently, the LC1G1854KUEN works with 110V, 120V, 220V, and 240V systems. Control circuit voltage Uc operates from 100 to 250V AC specifically.
Operate time measures 70 ms for the contactor closing. Release time measures 50 ms for contact opening. Thus, the LC1G1854KUEN responds quickly to control signals. These switching speeds suit most industrial motor and load control applications.
Auxiliary Contacts
The LC1G1854KUEN includes built-in auxiliary contacts for control circuits. One normally open (NO) auxiliary contact provides signal output. One normally closed (NC) auxiliary contact offers inverted status indication. Thus, the LC1G1854KUEN supports status monitoring and interlocking functions. These auxiliary contacts eliminate the need for separate add-on blocks.
Auxiliary contacts switch lower currents than main power contacts. They connect to PLC inputs, pilot lights, or interlock circuits. Therefore, the LC1G1854KUEN integrates easily into control systems. The 1 NO/1 NC configuration covers most basic feedback requirements.
Terminal Type and Connections
The LC1G1854KUEN uses busbar terminals for high-current connections. Busbar terminals provide low-resistance paths for 305A currents. This terminal type suits copper busbar systems in power distribution panels. Thus, the LC1G1854KUEN connects securely to main power circuits. Box lug termination style is also featured for cable connections.
Proper torque specifications must be followed for terminal tightening. Loose connections cause overheating and premature contactor failure. Therefore, use a calibrated torque wrench during installation. The busbar design accommodates high short-circuit currents safely.
Physical Dimensions and Mounting
The LC1G1854KUEN has a compact footprint for its power rating. Width measures 140 mm for panel layout planning. Depth reaches 193 mm, while length also measures 193 mm. Thus, the LC1G1854KUEN requires adequate clearance around all sides. Chassis mounting type allows flexible installation on backplates or panels.
The contactor weighs approximately 3.2 kg for robust construction. Multiple mounting positions are acceptable for installation flexibility. However, avoid inverted mounting where debris could enter the unit. Thus, consult the product manual for approved orientation options.
Standards and Approvals
The LC1G1854KUEN carries multiple international certifications for safety. CSA C22.2 No 60947-4-1 approval covers Canadian requirements. EN/IEC 60947-4-1 and 60947-5-1 meet European standards. JIS C8201-4-1 and JIS C8201-5-1 satisfy Japanese regulations. UL 60947-4-1 compliance ensures United States acceptance.
These certifications demonstrate compliance with global safety standards. Therefore, the LC1G1854KUEN suits installations worldwide. The "Better World Product" designation indicates Schneider Electric's sustainability commitment.
Application Scenarios
The LC1G1854KUEN serves multiple heavy-duty switching applications effectively. Motor control for large pumps, fans, and compressors is a primary use. Power distribution panels benefit from the 4-pole switching capability. HVAC systems use the contactor for electric heating and cooling control. Thus, the LC1G1854KUEN suits commercial and industrial facilities.
Typical installations include manufacturing plants and data centers. For example, chiller systems require reliable contactors for compressor control. Similarly, industrial ovens use the LC1G1854KUEN for heating element switching. Therefore, this contactor suits many demanding power control applications.
Installation Guide
Follow these steps to install the LC1G1854KUEN correctly.
Power Down System: De-energize all circuits before installation begins.
Mount Contactor: Secure the LC1G1854KUEN to the chassis using bolts.
Connect Main Power: Attach busbars or cables to the 4 main terminals.
Connect Coil: Wire 100-250V AC/DC supply to the coil terminals.
Wire Auxiliaries: Connect 1 NO and 1 NC contacts to control circuits.
Verify Torque: Tighten all terminals to specified torque values.
Check Clearance: Ensure adequate space around the LC1G1854KUEN for cooling.
Apply Power: Energize the coil and verify proper contact closure.
Test Operation: Cycle the contactor several times before load connection.
Important: Never apply voltage exceeding 250V to the LC1G1854KUEN coil. Always use properly sized conductors for 305A current capacity. The contactor requires adequate ventilation for reliable operation. Finally, verify that load current does not exceed 305A rating.
Key Features and Benefits
High Current Capacity: Handles 305A for heavy industrial loads.
Wide Coil Voltage: Accepts 100-250V AC/DC for global compatibility.
4-Pole Switching: Controls four circuits simultaneously with one device.
Built-in Auxiliaries: Includes 1 NO and 1 NC contacts for status feedback.
Fast Operation: Closes in 70 ms and opens in 50 ms for responsive control.
Global Approvals: Certified to CSA, IEC, JIS, and UL standards.
The LC1G1854KUEN delivers reliable high-current switching for industrial systems. Consequently, this contactor suits motor control, power distribution, and HVAC applications. Its 305A rating handles large motors and heating loads effectively. The 100-250V AC/DC coil works with control voltages worldwide. Environmental tolerance includes -25°C to 60°C operation for diverse installations.
Package Contents
One LC1G1854KUEN contactor unit
One installation instruction sheet
Terminal identification labels
Frequently Asked Questions (FAQ)
1. What is the maximum current rating of the LC1G1854KUEN?
The LC1G1854KUEN has an operational current rating of 305A. This rating applies for standard industrial load applications. Therefore, size your overload protection accordingly for this contactor.
2. What coil voltages work with the LC1G1854KUEN?
The LC1G1854KUEN accepts both AC and DC coil voltages from 100 to 250V. Thus, 110V, 120V, 220V, and 240V systems all work directly. No coil changes are required for different voltage systems within this range.
3. Does the LC1G1854KUEN include auxiliary contacts?
Yes, the LC1G1854KUEN includes 1 normally open and 1 normally closed auxiliary contact. These contacts provide status feedback for control systems. Therefore, no separate auxiliary block is needed for basic applications.
4. What is the operate time for the LC1G1854KUEN?
The LC1G1854KUEN closes in 70 ms and opens in 50 ms typically. These switching speeds suit most industrial motor and load control applications. Thus, the contactor responds quickly to control signals.
5. Is the LC1G1854KUEN suitable for DC switching?
Yes, the LC1G1854KUEN can switch DC loads up to 460V. The contact rating for DC is lower than AC due to arc extinction characteristics. Therefore, consult the product documentation for specific DC load ratings.