Schneider LC1E630U7 AC Contactor

The domestic full model designation is commonly LC1E630U7N. Discontinued in April 2021. It is a 3-pole high-power AC contactor.

✅ Model Code Definition

LC1E: EasyPact TVS AC contactor series

630: AC-3 rated operational current of 630 A

U: Spulenspannung 240 V und

7: 50/60 Hz universal AC coil

N: Domestic version with CCC certification (Overseas model LC1E630U7 does not carry suffix N)

This unit has no built-in auxiliary contacts. Auxiliary contacts require add-on accessories.

📋 Core Electrical Specifications

Artikel	Parameter
Anzahl der Pole	3P, 3KEINE Hauptkontakte
Utilisation category	AC-3 (Motorlasten), AC-1 (ohmsche Lasten)
AC-3 Ie	630 A (@ ≤440 V, 55 °C)
AC-1 Ith	1000 A (@ 40 °C)
Bemessungsisolationsspannung Ui	690 V
Bemessungsstoßspannungsfestigkeit Uimp	8 kV
Coil rated voltage Uc	240 V und, 50/60 Hz
Betriebsbereich der Spule	Abholen: 0.85~1.1 × Uc; Ausfallen: 0.25~0.5 × Uc
Inrush power consumption	1650 VA; Hold power consumption: 22 VA
Kompatible Motorleistung	220 V: 185 kW 380/400 V: 335 kW 440 V: 400 kW 690 V: 450 kW
Rated short-time withstand current Icw	5050 A / 10 S
Herstellung / Bruchkapazität	Herstellung: 6300 A; Brechen: 5040 A @440 V

🛠 Mechanical & Endurance Characteristics

Mechanische Ausdauer: 4 Millionen Zyklen

AC-3 electrical endurance: 600,000 Zyklen; AC-1: 200,000 Zyklen

Maximum operating rate: 1200 Zyklen/Stunde

Betriebszeit: Closing 40~80 ms; Opening 100~200 ms

Montage: Plate mount (high-current frame does not support standard DIN rail)

Anzugsdrehmoment: Hauptstromkreis 58 N·m; Steuerkreis 1.2 N·m

Gesamtdimension: W309 × H304 × D255 mm; Nettogewicht: 18.6 kg

Schutzklasse: IP00

Umgebungstemperatur im Betrieb: -5 ~ +55 °C; No derating up to altitude 3000 M

📌 Typical Applications

Hochleistungsventilatoren, Wasserpumpen, Luftkompressoren, Brecher, large motor starter cabinets, low-voltage switchgear; AC-3 squirrel-cage motor start-stop control, switching of heavy resistive loads.

⚠️ Discontinuation & Ersatzoptionen

LC1E630U7N discontinued in April 2021, no new original production. Aktie / second-hand units available on market.

Schneider OEM replacement: LC1G630KUEC (TeSys Giga series, 630 A, 240 VAC compatible coil)
Inländische Alternative: CJX2-F630, NC2-630, usw. (Überprüfen Sie die Spulenspannung, temperature rise and short-time withstand current)

🧰 Optional Accessories

Auxiliary contact block: LA1KN (add-on 1NO+1NC)

Coil surge suppressor, mechanische Verriegelung, terminal shroud, thermisches Überlastrelais (large frame LRD series)

📎 Inspection Checklist for Second-hand Acceptance

Measure coil resistance and compare with reference value for same model; power on to test pull-in / drop-out, no sticking or abnormal noise
Inspect main contact surface for ablation or welding; check consistency of contact resistance across three phases
Dielectric strength test: 2.5 kV / 1 min between phases and main circuit to earth
Verify terminal tightening torque; inspect busbar contact surface for oxidation and overheating discoloration
Test operating voltage: Reliable pull-in at 0.85Uc, reliable drop-out below 0.5Uc

LC1G630KUEC VS LC1E630U7 Parameter Comparison Table

LC1E630U7: EasyPact-Fernseher, eingestellt; LC1G630KUEC: TeSys Giga, OEM replacement. KU = 100~250 V AC/DC wide-range coil (compatible with original 240 VAC).

Parameter	LC1E630U7	LC1G630KUEC	Bemerkungen
Produktserie	EasyPact-Fernseher (Easy TeSys)	TeSys Giga	Schneider new generation high power contactor
Model definition	3P, AC-3 630 A, Spule 240 V und, 50/60 Hz	3P, AC-3 630 A, 100~250 V AC/DC wide coil	Giga AC/DC universal coil, direct replacement for U7 (240VAC) without control circuit modification
Produktstatus	Discontinued Apr 2021, Aktie / second-hand	In Produktion, genuine new
Polen / Hauptkontakte	3P, 3NEIN	3P, 3NEIN
AC-3 rated Ie @≤440V	630 A (55 °C)	630 A	Identical rating for motor loads
AC-1 conventional thermal current Ith @40 °C	1000 A	1050 A	Giga higher resistive load capacity
Bemessungsisolationsspannung Ui	690 V	1000 V	Giga upgraded insulation
Bemessungsstoßspannungsfestigkeit Uimp	8 kV	8 kV	Identisch
Rated short-time withstand current Icw	5050 A /10 S	5050 A /10 S; 4400 A /30 S	Same 10s withstand; Giga superior long-duration withstand
Making capacity @440V	6300 A	7220 A	Giga higher short-circuit making capability
Breaking capacity @440V	5040 A	5550 A
Eingebaute Hilfskontakte	Keiner, LA1KN add-on required	1NO+1NC built-in	No need to purchase auxiliary contact block for retrofit
Spulentyp	Nur Wechselstrom, 240 V, 50/60 Hz	Wide-range AC/DC 100~250 V	Compatible with AC and DC control supply, better engineering flexibility
Betriebsbereich der Spule	Einziehen:0.85~1.1Uc Drop-out:0.25~0.5Uc	Einziehen:0.8~1.1Ucmin~Ucmax Drop-out: ≤0.45Uc	Wider voltage tolerance for grid fluctuation
Stromverbrauch der Spule	Einbruch 1650 VA; Hold 22 VA	Einbruch 800 VA; Hold 15 VA	Much lower coil power, less cabinet heat
Mechanische Ausdauer	4 Millionen Zyklen	5 Millionen Zyklen	25% Verbesserung
AC-3 electrical endurance	600,000 Zyklen	1 Millionen Zyklen	Significant improvement under motor duty
Maximum operating rate	1200 Zyklen/Stunde	AC-3: 600 Zyklen/Stunde	LC1E better for frequent cycling; LC1G sufficient for standard motor applications
Betriebszeit	Close 40~80 ms; Open 100~200 ms	Close 40~70 ms; Open 15~50 ms	Giga faster opening
Umgebungstemperatur	-5 ~ +55 °C	-25 ~ +60 °C	Giga supports low-temperature startup
Schutzklasse	IP00	IP2X with shroud	Finger-safe protection
Dimension(B×H×T)	309 × 304 × 255 mm	211 × 284 × 266 mm	~32% narrower, spart Platz im Schrank
Nettogewicht	18.6 kg	14.2 kg	4.4 kg lighter for easier handling
Main circuit tightening torque	58 N·m	58 N·m	Busbar torque unchanged, busbars can be reused
Control circuit torque	1.2 N·m	Push-in-Federklemme	Tool-free control circuit connection
Montage	Plate mount	Plate mount	Mounting hole pattern incompatible, base plate re-drilling required
Verlustleistung pro Pol (AC-3)	48 W	26 W	Lower contact loss, less temperature rise
Motor power AC-3 @400V	335 kW	335 kW	Identical motor rating
Extra features	Basic contactor	Optional contact wear diagnosis, mechanische Verriegelung, Statusrückmeldung	Predictive maintenance available for critical loads

✅ Replacement Summary

Main circuit rating fully equivalent: Geeignet für 335 kW, 400 V motor. Keep busbar torque at 58 N·m; Mounting hole layout differs, base plate re-drilling required.
Control circuit advantage: LC1G630KUEC wide-range 100~250 V AC/DC coil works directly with original 240 VAC control supply; lower coil power and built-in 1NO+1NC auxiliary contacts, no auxiliary accessory purchase.
Einschränkung: Max operating rate reduced to 600 Zyklen/Stunde. Applications with frequent inching or high cycle count need evaluation.
Temperature rise & Zuverlässigkeit: Giga higher insulation voltage, lower contact loss and wider ambient temperature range, ideal for critical continuous-duty loads.

⚠️ Engineering Replacement Risk Notes

Original 240 V AC control supply can connect directly to LC1G630KUEC coil.

Do not replace directly for heavy inching / häufiges Rückwärtsfahren >600 Zyklen/Stunde; performance review mandatory.

Much narrower frame width; existing busbars and protective baffles need rework.

LC1G630KUEC (TeSys Giga) Industrie & Load Application Guide

LC1G630KUEC: AC-3 630 A, rated for 335 kW three-phase squirrel cage motor at 400 V. Built-in contact wear diagnosis, wide-range AC/DC coil and IP2X shroud. Designed for high-power motor start-stop, star-delta starters and heavy resistive load switching. Max operating rate 600 Zyklen/Stunde, not recommended for high-frequency inching.

🏭 1. Wasser & Abwasser (Waterworks, Sewage Plants, Pumping Stations)

Typical loads: Large raw water pumps, Abwasserhebepumpen, Umwälzpumpen, sludge pumps, Belüftungsgebläse, main drive motors for scrapers.

Merkmale: 24/7 continuous operation requiring high reliability. LC1G supports -25 °C low temperature operation and contact wear diagnosis for predictive maintenance. Widely used in MCC pump cabinets and the most common retrofit candidate replacing LC1E630U7.

🌬️ 2. Large HVAC, Rechenzentren & Gewerbekomplexe

Typical loads: Chiller compressors, large cooling tower fans, primary / secondary chilled water pumps, building exhaust fans.

Merkmale: Building MCC switchgear, frequent start-stop and elevated cabinet ambient temperature. Giga Ui=1000 V high insulation and low temperature rise; wide coil accommodates building supply voltage fluctuation.

⚙️ 3. Metallurgie, Bergbau & Baustoffe

Typical loads: Brecher, Kugelmühlen, heavy belt conveyors, kiln blowers, hoist motors (derating required for AC-4 duty).

Merkmale: Heavy shock loads and dusty harsh environment; strong short-time withstand and short-circuit capacity. AC-4 hoist duty limited to max 150 Zyklen/Stunde, derating mandatory during selection.

🛢️ 4. Petrochemie & Energie (Öl & Gas, Solar, Windkraft)

Typical loads: Process pumps, Kompressoren, thermal oil furnace blowers, wind turbine yaw / pitch large motors, high-power resistive load switching for PV systems.

Merkmale: Mounted outside explosion-proof enclosures, prone to supply voltage fluctuation. Wide-range 100~250 V AC/DC coil with high control supply compatibility; Marine certification available for auxiliary motor circuits on offshore platforms.

📦 5. Papier, Zellstoff, Essen & Pharmazeutisch

Typical loads: Paper machine main fans, Vakuumpumpen, large agitator motors, drying resistive heating loads (AC-1).

Merkmale: Continuous production with zero unscheduled downtime tolerance. Contact wear diagnosis enables advance replacement planning.

🏗️ 6. Infrastruktur & Railway Auxiliary Systems

Typical loads: Tunnel exhaust fans, station large water pumps, Kältemaschinen, port crane auxiliary drives, terminal conveying equipment.

Merkmale: Preferred choice for project-type MCC panel builders; compatible with star-delta starter schemes with LA9G mechanical interlock accessory.

🧱 7. OEM Panel Builders & System Integrators

Panel builders: Low voltage Motor Control Centre (MCC), large motor starter cabinets, star-delta starter panels, soft starter bypass contactors (Bypass duty breaking capacity assessment required).

✅ Load Category Compatibility Summary

AC-3 (Primary use): Normal start-stop squirrel cage motors (Pumps, Fans) ✅ Bevorzugt

AC-1: Widerstandsheizung, resistive load switching, Ith=1050 A ✅

AC-4: Motor plugging / reverse braking, inching (hoists etc.), derating required and strict operating frequency limits ⚠️

AC-6a: Umschaltung der Kondensatorbank, capacitor dedicated protection required; direct use not recommended

⚠️ Key Selection Limitations

Max AC-3 operating rate: 600 Zyklen/Stunde. Applications with higher frequency (inching, häufiges Rückwärtsfahren) are not recommended; LC1E630U7 is preferred.
Betriebsumgebung: -25 °C ~ +60 °C, wider temperature range than legacy LC1E630U7.
Mounting hole pattern incompatible with LC1E; cabinet base plate re-drilling required for retrofit.
Marine type approval available for vessel applications.