How are 1.5 kV and 3.6 kV versions selected in CKJ11 Series?

Selection is made clearly by system voltage: For 1.5 kV systems use CKJ11-160/1.5, 250/1.5, 400/1.5, 800/1.5, or CKJ11-3000 (mega current). For 3.6 kV systems use CKJ11-500/3.6 or CKJ11-630/3.6. System voltage and rated current must be considered together — for example, for a 3 kV / 400 A motor drive, CKJ11-500/3.6 (3.6 kV rating + 500 A capacity) is preferred, since the 3 kV system cannot be paired with 1.5 kV models (insufficient rating).

Why does the CKJ11-3000 offer such high current?

The CKJ11-3000 is a special high-current version offering 3000 A rated continuous current, 30000 A making capacity, and 24000 A breaking capacity. Typical applications: Mega-watt RPC (Reactive Power Compensation) — Switching 4-5 MVAr capacitor banks on 1.5 kV bus Large transformer magnetic switching — Backup transformer in/out Steel production arc furnace — Loads requiring high inrush current Industrial UPS and energy storage — Large current transfer For standard continuous motor drive, CKJ11-800/1.5 is sufficient; CKJ11-3000 is for special high-power and short-duration high-current applications.

What is the stock status of CKJ11 models at IMB Electric Türkiye?

IMB Electric, as GLVAC Türkiye representative, stocks CKJ11-500/3.6 and CKJ11-160/1.5 models. Other CKJ11 models (CKJ11-250/1.5, 400/1.5, 800/1.5, 630/3.6, and CKJ11-3000) are supplied within 4-8 weeks upon request. Direct contact is recommended for project-based large orders, custom coil voltage, or auxiliary contact configurations.

How is CKJ11 used in electrified railway power distribution?

Electrified railway power distribution infrastructure typically involves 3 kV and 25 kV systems. For 3 kV DC systems, the 3.6 kV rated CKJ11-500/3.6 or CKJ11-630/3.6 contactor is the typical choice for inverter output. Application areas: Traction transformer auxiliary systems — Cooling, compressor, fan Railway station systems — Lighting, heating, HVAC distribution Charging stations — Electric locomotive battery charging Rail heating systems — Snow/ice melting in winter Vacuum insulation provides stable operation in railway environmental conditions including vibration, high humidity, and salt dust in winter.

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GLVAC · PRODUCT SERIES

GLVAC CKJ11 Series

1.5 kV and 3.6 kV AC vacuum contactor — 160A to 3000A industrial applications

The GLVAC CKJ11 Series is a vacuum contactor family designed for frequently switched motor drives and power distribution switches in medium voltage (MV) AC systems. 7 models cover two voltage ranges: 1.5 kV (160/250/400/800 A standard + CKJ11-3000 high-current version) and 3.6 kV (500 and 630 A).

The CKJ11-3000 model is particularly notable — with 30,000 A rated making and 24,000 A rated breaking capacity, it is used in high-power motor starting, large transformer magnetic switching, and mega-watt scale reactive power compensation (RPC) applications.

The 3.6 kV version (CKJ11-500/3.6 and CKJ11-630/3.6) is preferred in electrified railway and metallurgy high-voltage motor drives. Standard 1.5 kV models are used in petrochemical, compensation panels, mining (systems above 1.14 kV), and industrial motor control.

IMB Electric — GLVAC Türkiye representative. CKJ11-500/3.6 and CKJ11-160/1.5 models are stocked.

Petrochemical facilities (1.5/3.6 kV motor drives)Electrified railway power distributionMetallurgy furnace and rolling mill drivesMega-watt reactive power compensation (CKJ11-3000)High-power transformer switchingMining (1.5 kV systems)Power generation auxiliary systems

01type: AC vakum kontaktör (orta voltaj)
02Sealing: Vakum yalıtımlı kontak
03frequency: AC 50 Hz
04Current Range: 160 A – 3000 A (7 model)
05Voltage Rating: 1.5 kV ve 3.6 kV (12 kV ve altı sistemler)
06electrical life: 1 milyon çevrim
07max making capacity: 30,000 A (CKJ11-3000)

CKJ11 Series Series Contactor Models

Sorted by current rating (150A → 1000A)

7 MODELS

MODEL↑ current	imb stock	rated making a	rated current a	rated breaking a	rated voltage kv	limited breaking a
CKJ11-160/1.5	true	1600	160	1280	1.5	3000
CKJ11-250/1.5	—	2500	250	2000	1.5	4500
CKJ11-3000	—	30000	3000	24000	1.5	24000
CKJ11-400/1.5	—	4000	400	3200	1.5	4500
CKJ11-500/3.6	true	5000	500	4000	3.6	5000
CKJ11-630/3.6	—	6300	630	5000	3.6	6300
CKJ11-800/1.5	—	8000	800	6400	1.5	8000

TECHNICAL DIFFERENTIATORS

Why CKJ11 Series?

03 · CATEGORIES

IMB Electric Türkiye Stock ⭐

CKJ11-500/3.6 and CKJ11-160/1.5 in stock
→ Fast supply.
Other models within 4-8 weeks
→ Project-supported.

1.5 kV and 3.6 kV Dual Voltage

1.5 kV and 3.6 kV versions
→ Optimized for system voltage.
Up to 3000 A high current capacity
→ For mega-watt applications.

Vacuum-Insulated Contact

Arc interruption in vacuum
→ No external magnetic blowout.
Resistant to petrochemical and railway environments
→ Vibration, humidity, chemicals.

DATASHEET · GUIDE · APPLICATION NOTE

CKJ11 Series — Technical Resources

07 · FILES

CKJ11-160/1.5 Datasheet

CKJ11-160/1.5 DatasheetSOON

CKJ11-250/1.5 Datasheet

CKJ11-250/1.5 DatasheetSOON

CKJ11-400/1.5 Datasheet

CKJ11-400/1.5 DatasheetSOON

CKJ11-800/1.5 Datasheet

CKJ11-800/1.5 DatasheetSOON

CKJ11-3000 Datasheet

CKJ11-3000 DatasheetSOON

CKJ11-500/3.6 Datasheet

CKJ11-500/3.6 DatasheetSOON

CKJ11-630/3.6 Datasheet

CKJ11-630/3.6 DatasheetSOON

FREQUENTLY ASKED QUESTIONS

About the CKJ11 series

04/04

RELATED INSIGHTS · CKJ11REF · IMB · PUB · 02 ENTRIES

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RELATED INSIGHTS

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02 ENTRIES

// end of index · 02 / 02

GLVAC CKJ11 Series

Why CKJ11 Series?

IMB Electric Türkiye Stock ⭐

1.5 kV and 3.6 kV Dual Voltage

Vacuum-Insulated Contact

CKJ11 Series — Technical Resources

CKJ11-160/1.5 Datasheet

CKJ11-250/1.5 Datasheet

CKJ11-400/1.5 Datasheet

CKJ11-800/1.5 Datasheet

CKJ11-3000 Datasheet

CKJ11-500/3.6 Datasheet

CKJ11-630/3.6 Datasheet

About the CKJ11 series

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Orta Voltaj AC Kontaktör Seçim Rehberi (1.5-12 kV)

Reaktif Güç Kompanzasyonu için Kontaktör Seçimi

GLVAC CKJ11 Series

Why CKJ11 Series?

IMB Electric Türkiye Stock ⭐

1.5 kV and 3.6 kV Dual Voltage

Vacuum-Insulated Contact

CKJ11 Series — Technical Resources

CKJ11-160/1.5 Datasheet

CKJ11-250/1.5 Datasheet

CKJ11-400/1.5 Datasheet

CKJ11-800/1.5 Datasheet

CKJ11-3000 Datasheet

CKJ11-500/3.6 Datasheet

CKJ11-630/3.6 Datasheet

About the CKJ11 series

01How are 1.5 kV and 3.6 kV versions selected in CKJ11 Series?

02Why does the CKJ11-3000 offer such high current?

03What is the stock status of CKJ11 models at IMB Electric Türkiye?

04How is CKJ11 used in electrified railway power distribution?

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Orta Voltaj AC Kontaktör Seçim Rehberi (1.5-12 kV)

Reaktif Güç Kompanzasyonu için Kontaktör Seçimi