Schneider LC1G630KUEN Contactor

Full Model Number: LC1G630KUEN

Series: TeSys Giga New Generation High-Current AC Contactor (Replaces Legacy LC1F630)

Product Status: Mass-produced, in stock, global standard imported version

Application: Direct-on-line starting of high-power motors, soft starter bypass, busbar power switching, control of heavy-duty equipment such as air compressors, rolling mills and overhead cranes

Model Code Decoding `LC1 G 630 KUEN`

LC1: Standard 3-pole AC contactor
G: TeSys Giga high-current platform
630: Rated operational current 630A at AC-3, 440V
KU: Electronic wide-voltage coil code (KUE = 100~250V AC/DC universal coil)
E: Global imported version (distinguished from domestic “C” suffix)
N: Standard base unit (no special extended or downgraded structure)
Core Electrical Ratings

2.1 Main Contact Ratings

Utilization Category	Rated Voltage	Rated Current	Matching Motor Power
AC-3 (Motor Switching)	440V AC	630A	400kW
AC-1 (Resistive / Bypass)	≤1000V AC	1050A	Resistive heating, soft starter bypass
Rated Insulation Voltage Ui	1000V	Short-Time Withstand Current Icw	5.05kA / 10s
Breaking Capacity	5550A at 440V	Main Circuit Connection	Bolted busbar connection

2.2 Control Coil (Key Features of KU Version)

Coil voltage range: 100～250V AC/DC universal for AC and DC supply

Low-power electronic coil with built-in surge suppression; no additional RC snubber required

Pick-up time ≈70ms, drop-out time ≈50ms

Wide voltage range supports direct PLC driving and reduces cabinet heat generation

2.3 Auxiliary Contacts (Standard Non-Removable)

Fixed built-in 1NO + 1NC auxiliary contacts

Minimum load: 17V / 1mA (compatible with low-current PLC feedback signals)

Mechanical, Dimensional & Environmental Specifications
Overall Dimensions: H 324mm × W 210mm × D 266mm
Unit Weight: 14.2kg
Mechanical Endurance: 5,000,000 operations; Electrical Endurance (AC-3): 600,000 operations
Max Operating Frequency: 600 cycles per hour
Protection Class: IP2X with front protective cover
Operating Ambient Temperature: -25℃ ~ +60℃ (no current derating at 60℃ full load)
Storage Temperature: -60℃ ~ +80℃
Altitude: No derating required up to 3000m
Mounting: Flat wall mounting, supports installation at any angle
Exclusive Core Functions (Standard for TeSys Giga Series)
CWD Main Contact Wear Self-Diagnosis

Front panel LED indicator identifies faults via flash counts:

1 flash: Main contact wear warning

2 flashes: Coil undervoltage

3 flashes: Coil overvoltage

Continuous fast flashing: Internal module hardware failure

Modular Replaceable Main Contact Cartridge

Only the contact cartridge needs replacement after wear instead of the whole unit, greatly lowering maintenance costs.

Front plug-in spring control terminals; busbar disassembly not required for wiring
Direct bottom mounting of matching LR9G series thermal overload relays without transition busbars
QR code on unit body; scan to download complete datasheets, wiring diagrams and certification documents
Compatible / Replacement / Same Series Model Comparison

5.1 Direct Replacement for Legacy Model

Discontinued original model LC1F630M7 → Standard replacement LC1G630KUEN

5.2 Same Current Rating with Different Coil Versions

Model Suffix	Coil Specification	Application Scenario
LC1G630EHEN	48~130V AC/DC	Low-voltage control circuits
LC1G630KUEN	100~250V AC/DC	Universal (this model)
LC1G630LSEN	200~500V AC	High-voltage control circuits

5.3 Domestic Localized Version

LC1G630KUEC (C = China CCC certification; identical dimensions and functions, only differing in origin and certification)

5.4 4-pole Equivalent Model: LC1G6304KUEN (4 normally open main contacts)

Typical Fault Matrix

Fault Symptom	Root Cause	Resolution
Coil fails to pull in after power-up, no indicator light	Broken control circuit, coil voltage below 100V	Measure control voltage and inspect wiring terminals
Chattering during pull-in, alarm flashes twice	Coil undervoltage, excessive voltage drop from thin control wires	Use thicker control cables and raise supply voltage
Pulls in but trips during operation, flashes once	Severe main contact ablation, excessive contact resistance	Replace main contact cartridge
Continuous fast LED flashing	Damaged internal electronic control board	Replace the entire contactor
Severe overheating during closing	Loose busbar bolts, oxidized contacts	Retighten to specified torque and polish contact surfaces

Standard Optional Accessories List
LA9G630: Interphase arc barrier
LA9G970: Mechanical interlock for two units (forward/reverse / reversing circuits)
LA9G3762: Connection busbars for reversing contactors
LR9G630: Matching thermal overload relay (direct bottom mounting)
Terminal insulating protective covers, extended busbar transition adapters
Typical Application Scenarios
Direct-on-line starting control for high-power fans, water pumps and compressors
Bypass contactors for 160~250kW soft starters
Heavy-duty motors for overhead travelling cranes, steel rolling and mining equipment
Busbar switching in low-voltage distribution cabinets, capacitor switching for reactive power compensation (AC-1 duty)
Heavy-duty industrial control integrated equipment for marine, metallurgy and cement industries
Procurement & Certification Information
Certifications: CE, CCC, cULus, EAC, marine classification society certifications
Environmental Compliance: Green Premium, mercury-free design complying with RoHS/REACH
Supply Status: Original imported stock available; standard factory lead time 5 weeks
Wiring Torque: Main circuit bolts torque 80N·m; tool-free direct insertion for spring control terminals

LC1G630KUEN (TeSys Giga) VS LC1F630 (TeSys F) Retrofit & Replacement Comparison Table

Overall Unit Dimension Comparison (H×W×D)

Parameter Item	LC1F630 (Legacy Model)	LC1G630KUEN (New Model)	Retrofit Impact
Unit Height H	304 mm	284 mm	Height reduced by 20mm, extra space available at cabinet top
Unit Width W	309 mm	210 mm	Width reduced by 99mm (approx. 35%), significant cabinet space saving
Unit Depth D	255 mm	266 mm	Depth increased by 11mm; clearance required at rear
Net Unit Weight	18.6 kg	14.2 kg	Weight reduced by 4.4kg, lower load on mounting plate

Mounting Plate Hole Dimensions (Standard 3-pole)

2.1 Mounting Hole Spacing

Specification	LC1F630	LC1G630KUEN	Retrofit Key Points
Horizontal Hole Pitch G (pole-wise spacing)	90 mm	70 mm	Old and new holes offset horizontally; original holes cannot be reused
Vertical Hole Pitch J (top-bottom spacing)	220 mm	242 mm	Vertical spacing increased
Fastener Bolt Size	M8 bolt	M8 bolt	Same bolt size but fully misaligned hole positions
Max Drill Hole Diameter	8 mm	9 mm	New contactor accepts larger mounting holes
Number of Mounting Holes	4 diagonal fixing holes	4 diagonal fixing holes	Same quantity of holes with fully shifted positions

Two Retrofit Solutions for Mounting Plate

1) Direct re-drilling: Mark and drill new holes on existing plate, abandon old holes

2) Add transition steel plate: Prefabricated adapter plate matching original LC1F hole pitch without cabinet plate modification (recommended for mass retrofits)

Schneider original replacement kit LA9GRT630 – dedicated transition bracket compatible with original LC1F mounting holes.

Main Circuit Busbar / Terminal Interface Comparison

Item	LC1F630	LC1G630KUEN	On-Site Wiring Difference
Inter-Pole Center Distance	90mm	70mm	Busbar span reduced by 20mm; original busbars require re-bending / cutting
Terminal Opening Width	60mm	48mm	Legacy 60mm-wide busbars cannot be inserted directly into new terminals
Max Allowable Busbar Size	60×5mm	50×20mm	New model supports thicker double-layer busbars with higher current carrying margin
Busbar Layers Per Terminal	Single-layer busbar	Double-layer busbar (standard 52×20mm busbar)	New model allows stacked upper and lower busbars
Main Circuit Tightening Torque	58 N·m	80 N·m	Higher torque requirement for new bolts; extended torque wrench needed
Cable Lug Compatibility	Single 185mm² cable lug	Single 185mm² ring lug	Interchangeable lug size but different front-rear installation positions

Busbar Retrofit Recommendations

Original 60mm-wide busbars matched to LC1F: Cut down to 48–50mm width
Change span from 90mm to 70mm and shorten inter-pole connecting segments
Prioritize original standard 52×20mm connection busbars LA9G630BUS (no bending required)
Control Circuit Wiring Differences

Parameter	LC1F630	LC1G630KUEN	Retrofit Notes
Control Terminal Type	Screw compression terminals	Front plug-in tool-free spring terminals	Control cables require no crimp lugs; plug-and-play
Control Cable Cross-Section	1~4mm簡 solid / stranded wire	0.2~2.5mm簡	Better compatibility for thin signal wires (PLC feedback)
Terminal Layout	Side of unit	Lower front face of unit	No side bending required for easier maintenance access
Coil Power Consumption	1500VA pick-up, 80VA holding	Only 11W holding power	Greatly reduced cabinet temperature rise; no extra cooling fan needed
Coil Voltage Compatibility	Single fixed AC/DC rating	KU series universal 100~250V AC/DC	No control transformer replacement required, fits most field circuits

Matching Thermal Overload Relay Installation
LC1F630: LR9F7375, side external mounting with transition busbars required
LC1G630KUEN: LR9G630, direct bottom plug-in mounting, no transition busbars and smaller overall footprint
Retrofit Tip: Remove existing external thermal relay bracket, mount thermal relay directly under contactor to shorten wiring length
Retrofit Risks & Construction Precautions
Mounting Plate: Old and new hole positions are completely misaligned; do not force contactor fastening. Original transition bracket LA9GRT630 is recommended.
Main Busbars: Pole spacing reduced by 20mm. Forced assembly of legacy busbars causes terminal stress, overheating and ablation – busbars must be remanufactured.
Rear Clearance: New model is 11mm deeper. Verify minimum 30mm safety clearance if busbars or cable trunking are installed at cabinet rear.
Torque Standard: Main circuit torque must reach 80N·m; insufficient torque leads to overheating during long-term operation.
Control Circuits: Shorten legacy screw-type control wires and insert directly into spring terminals without re-crimping lugs.
Maintenance Advantage: G-series contact cartridges are replaceable separately, while damaged F-series contactors require full unit replacement for lower long-term maintenance costs.
Minimal Retrofit Bill of Materials
Main Unit: LC1G630KUEN
Mounting Transition Bracket: LA9GRT630 (reuses original LC1F plate holes)
Matching Thermal Overload Relay: LR9G630
Busbar Accessory: LA9G630 standard connection busbars
Protection Accessory: LA9G630 interphase arc barrier