Vacuum Contactors for Motor Control & Capacitor Switching: 1.14kV to 40.5kV
From heavy-duty low voltage (LV) contactors for mining to medium voltage (MV) vacuum contactors for switchgear. XBRELE offers reliable switching solutions with mechanical life up to 1 million operations for motors, transformers, and capacitor banks.
Comprehensive vacuum switching: 1.14kV to 40.5kV
Vacuum contactors are the ideal solution for applications requiring frequent operations where circuit breakers are not suitable. XBRELE offers a complete spectrum of switching technologies, from low-voltage (1.14kV) units for mining equipment to medium-voltage (40.5kV) contactors for high-power networks.
Our portfolio includes the robust CKG & JCZ series for standard MV motor control and the premium LCZ/LZNJ series featuring solid embedded poles for harsh, dusty environments.
Uniquely, we also provide high-current Low Voltage (LV) vacuum contactors (up to 3200A) designed specifically for 1140V and 2kV industrial systems. Whether for a soft starter cabinet in a cement plant or a capacitor bank in a utility substation, our contactors deliver maintenance-free performance with electrical holding or mechanical latching options.
CKG, JCZ, LCZ and CKJ – complete vacuum contactor portfolio
XBRELE supplies four main vacuum contactor series covering 1.14kV, 7.2kV, 12kV and 40.5kV. From heavy-duty mining contactors to precision MV capacitor switches, we provide the right solution for every industrial and utility application.
CKG3 / CKG4 vacuum contactors for 7.2kV & 12kV motor and feeder control
CKG vacuum contactors are the workhorse MV contactors for 3.3kV, 6.6kV and 11kV panels in India. With rated voltages of 7.2kV and 12kV and currents from 160A up to 630A, they are extensively used for motor feeders and specialized back-to-back capacitor bank switching.
- Rated voltage 7.2kV / 12kV, rated current 160–630A
- Short-time withstand current up to 10Ie, peak withstand up to 25Ie
- Zero-bounce technology available to reduce arc reignition
- Suitable for AC3 / AC4 motor duty and C2 capacitive switching
- Options for electrical holding and mechanical latching coils
- Ideal for Indian OEM panel builders using withdrawable or fixed designs
JCZ5 / JCZ1 compact vacuum contactors for indoor MV switchgear
JCZ vacuum contactors are compact 7.2kV and 12kV contactors with rated currents from 160A to 630A. They are ideal for indoor metal-enclosed switchgear, ring main units and compact MCCs where panel depth is limited but high reliability is essential.
- Compact integrated frame structure for space-saving panels
- Rated voltage 7.2kV / 12kV, mechanical life up to 500,000 operations
- Compatible with F-C cabinets for short-circuit protection
- Available in mechanical latching or electrical holding types
- Flexible auxiliary contact arrangements for protection and interlocking
- Well-suited to Indian OEMs building compact indoor MV control panels
LCZ1 / LCZ7 vacuum contactors – enclosed & plateau types up to 40.5kV
The LCZ medium-voltage range features enclosed pole designs and specialized plateau types (GF models) suitable for altitudes up to 3500m. The portfolio extends up to 40.5kV, offering robust single-pole solutions for high-voltage feeder automation and traction power.
- Rated voltage 12kV & 40.5kV, rated current 160–1250A
- Enclosed and plateau (GF) types for high-altitude applications
- Short-time withstand current up to 10Ie, peak withstand up to 25Ie
- Mechanical life up to 50×104 operations (12kV types)
- Suitable for outdoor cabinets, capacitor banks and transformer feeders
- Option to customise terminals, control voltage and auxiliary contacts for OEMs
CKJ & LZNJ series for 1.14kV–2kV industrial power & solid insulation needs
This specialized range covers low-voltage (1.14kV) heavy-duty contactors for mining and industrial drives, as well as the LZNJ solid-embedded pole series. The solid insulation technology protects the vacuum interrupter from dust, moisture, and external impact.
- CKJ Series: 1.14kV / 2kV ratings, high current up to 3200A
- LZNJ Series: Resin-embedded poles for maintenance-free operation
- No exposed arc, explosion-proof ready for mining applications
- Suitable for frequent starting of large LV/MV motors
- Robust mechanical latching options available
- Perfect for soft starters and variable frequency drives (VFD)
Advanced structure, insulation, and switching performance
XBRELE vacuum contactors utilize sealed vacuum interrupters, robust air or solid-embedded (resin) insulation systems, and reliable electromagnetic or mechanical-latching mechanisms. Our designs are optimized for both low voltage high-current industrial applications and medium voltage distribution networks.
- Wide Voltage Range: From 1.14kV mining contactors to 40.5kV high-voltage feeder switches.
- Solid Insulation Technology: Resin-embedded poles available (LZNJ series) for superior dust and moisture resistance in harsh environments.
- High Performance: Rated currents up to 3200A (LV series) and zero-bounce technology (CKG series) for extended contact life.
- Flexible Operation: Electromagnetic holding, permanent magnet, or mechanical latching mechanisms to suit various control schemes.
- Compliance: Engineered to meet IEC 62271-106 standards, ensuring compatibility with global switchgear designs.
From 1.14kV mining drives to 40.5kV grid switching
XBRELE vacuum contactors are engineered for the most demanding frequent switching duties. Our solutions power industrial motor control centers, mining hoists, and utility capacitor banks, offering robust performance across Low Voltage (1.14kV) and Medium Voltage (up to 40.5kV) networks.
Industrial Motor Control
Frequent starting of MV (3.3kV–11kV) and LV (1.14kV) motors for pumps, fans, and crushers in cement, steel, and petrochemical plants.
Mining & Severe Duty
Specialized 1.14kV vacuum contactors for mining hoists, conveyors, and explosion-proof starters requiring no exposed arc and high vibration resistance.
Capacitor Bank Switching
Zero-bounce CKG series designed for back-to-back capacitor switching in power factor correction panels, minimizing inrush current and reignition risks.
Soft Starters & OEMs
Compact, maintenance-free contactors (LZNJ/LCZ) ideal for integration into high-voltage soft starter cabinets and variable frequency drives (VFDs).
Manufacturing expertise: From 1.14kV to 40.5kV
XBRELE is a comprehensive vacuum switching specialist. By manufacturing our own vacuum interrupters, **solid embedded poles**, and operating mechanisms, we ensure consistent quality across our CKG, JCZ, LCZ, and Low Voltage CKJ series[cite: 1309, 1614].
In-house Core Technology
We produce not only vacuum interrupters but also **resin-embedded poles** (LZNJ series) in-house. This vertical integration ensures superior insulation and impact resistance for harsh mining and industrial environments.
Severe Duty Proven
Our contactors are engineered for the toughest jobs: 1140V mining hoists, **high-voltage soft starters**, and frequent-switching electric arc furnaces where standard breakers fail.
Advanced Switching Logic
Featuring patented **Zero-Bounce technology** (CKG4-12L) to eliminate arc reignition in capacitor banks, and **Electric Repulsion mechanisms** for ultra-fast response in critical circuits.
High Endurance Testing
Validated for **C2 class capacitive switching** and extreme mechanical endurance—up to **1,000,000 operations** for our Low Voltage series.
Frequently asked questions about vacuum switching solutions
Short technical answers for panel builders and industrial users selecting low and medium voltage switching devices for motor starters, mining equipment, and capacitor banks.