2026 Global Top 10 Low Voltage DC Contactor Manufacturers

Low voltage DC contactors are the electromechanical switching devices that make or break direct current circuits in electric vehicles, energy storage systems, solar installations, and industrial DC power distribution.

Demand for these components has been climbing steadily as electrification spreads across transportation, renewable energy, and industrial automation. Independent market research pegs the global DC contactor market at roughly USD 532.73 million in 2025, with continued single-digit percentage annual growth expected through the early 2030s — a trend driven largely by EV production, battery energy storage deployment, and solar installation growth..

1. HIITIO

• Founded: 2018
• Headquarters: Hangzhou, Zhejiang, China
• Core Products: Ceramic-sealed and epoxy-sealed DC contactors (up to 1,500 VDC), semiconductor fuses, DC circuit breakers, power semiconductor modules
• Official Website: hiitio.com
• Category Link: Low Voltage DC Contactors

HIITIO was established in 2018 and brought in a dedicated R&D team to focus on DC switching and protection components for the new energy sector. In a relatively short span, the company has built a 30,000 sqm manufacturing base serving over 500 customers across more than 50 countries, with certifications spanning UL, CE, CB, CCC, and TÜV. Its product scope covers the full IEC low voltage DC range — from compact 20 A contactors used in solar optimizers to 1,000 A units rated at 1,500 VDC for grid-scale ESS — positioning it as a one-stop supplier for engineers who need both contactors and the fuses, breakers, and semiconductor modules that work alongside them.

HIITIO’s flagship strength in this segment is its low voltage DC contactor lineup, spanning the HCD, ZJWP, and HCM1 series with coil voltage options from 12V to 96V DC and current ratings from 80A up to 600A. The full lineup is listed on the low voltage DC contactors product page.

2. TE Connectivity (Kilovac)

• Founded: Kilovac brand established 1964; acquired by TE Connectivity in 2002
• Headquarters: Schaffhausen, Switzerland
• Core Products: Hermetically sealed DC relays and contactors, current-sensing contactors
• Official Website: te.com

TE Connectivity’s Kilovac brand has been a reference point in DC switching since 1964, originally serving aerospace and defense applications before expanding into EV, energy storage, and industrial power. The KILOVAC lineup delivers continuous current ratings up to 500 amps with overload ratings up to 2,000 amps in compact, lightweight packages, and the brand’s hermetic sealing technology remains a benchmark for harsh-environment reliability. With decades of aerospace-grade engineering behind it, TE Connectivity’s contactors are frequently specified where long service life and vibration resistance outweigh cost sensitivity.

A standout in the range is the current-sensing contactor series, which integrates a current sensor directly into the contactor body. This eliminates the need for a separate discrete current sensor, saving cost, weight, and panel space, while offering a programmable trip feature for immediate, delayed, or disabled tripping. That level of integration appeals to OEMs looking to simplify battery management system wiring.

3. Sensata Technologies (Gigavac)

• Founded: Gigavac founded 2002; acquired by Sensata Technologies in 2018
• Headquarters: Attleboro, Massachusetts, USA
• Core Products: GX/P series DC power contactors, MiniTACTOR precharge contactors, high-voltage relays, GigaFuse protection devices
• Official Website: sensata.com

Gigavac was founded in 2002 by former Kilovac management and built an independent reputation before Sensata Technologies acquired the brand for approximately $233 million in 2018, folding it into a broader portfolio of sensing and electrical protection products. Since then, Sensata | Gigavac has continued to expand its DC switching lineup for EV, battery storage, and industrial electrification, maintaining the brand’s original focus on sealed, rugged contactor design.

The GX series switches DC loads up to 800 VDC and is rated for mounting in any position, including underwater and across a −55°C to 85°C temperature range, making it a practical choice for outdoor ESS cabinets and mobile equipment. The compact P Series MiniTACTOR, rated up to 80 A at 1,500 VDC, is purpose-built for precharge circuits in solar inverters, battery packs, and control systems, addressing a common pain point in inrush-current management.

4. Panasonic Industry

• Founded: 1918
• Headquarters: Kadoma, Osaka, Japan
• Core Products: EV and EP series automotive DC contactors and relays
• Official Website: industrial.panasonic.com

As one of the world’s largest electronics manufacturers, Panasonic brings over a century of component engineering discipline to its EV-focused DC contactor line. The company entered the automotive relay space as electric and hybrid vehicle production scaled globally, and its DC contactors are now specified by multiple automotive OEMs and Tier 1 suppliers for battery disconnect and main circuit switching duties.

Panasonic’s EV Series achieves compact, high-voltage DC cutoff performance through a hydrogen-gas-filled sealed capsule contact design, an approach that favors size and weight reduction — a priority in passenger EV battery packs where every gram and cubic centimeter of pack volume matters. Because Panasonic restricts sales of these automotive-grade relays to properly certified automotive customers, they tend to appear in vehicle platforms rather than aftermarket or general industrial channels.

5. LS Electric

• Founded: 1974
• Headquarters: Anyang, Gyeonggi-do, South Korea
• Core Products: DC contactors for solar and ESS, IEC-compliant low voltage switchgear
• Official Website: ls-electric.com

LS Electric traces its roots to 1974 as part of the LS Group (formerly a division of LG), and rebranded from LSIS to LS Electric in 2020 as it repositioned around smart energy and automation. The company is one of South Korea’s largest industrial electrical equipment manufacturers, with production facilities across Korea, China, and Vietnam supplying power distribution and automation components worldwide.

LS Electric’s DC contactors are engineered specifically for switching DC circuits up to 1,000 V, with a compact footprint suited to PV solar, UPS, and energy storage system applications. That combination of IEC-standard compliance and compact packaging makes the line a common choice for system integrators building standardized solar inverter and battery cabinet designs across the APAC region.

6. Schaltbau (Eddicy)

• Founded: 1929
• Headquarters: Munich, Germany
• Core Products: DC and AC contactors, battery contactors, traction and industrial DC switching components
• Official Website: schaltbau.com

Schaltbau has nearly a century of history in DC switching, having been founded in Munich in 1929 to produce railway switchgear before expanding into battery, industrial, and e-mobility markets. The company now operates under its Schaltbau and Eddicy brands, with the latter created specifically to serve DC applications in energy and e-mobility — a signal of how central low voltage DC switching has become to its business.

Schaltbau’s compact DC contactor line, rated up to 1,500 V, is designed for frequent switching under load, while its broader battery contactor families cover applications from 200 V up to higher industrial ranges. The company’s century-long focus on rail-grade reliability translates into contactors built for high cycle counts and demanding duty cycles, which is why they remain common in industrial storage systems and battery test equipment.

7. Curtis Instruments (Albright)

• Founded: 1960
• Headquarters: Mount Kisco, New York, USA
• Core Products: Albright DC contactors, motor controllers, battery management systems
• Official Website: curtisinstruments.com

Curtis Instruments has supplied motor control and electric vehicle instrumentation since 1960 and, as a Parker Hannifin company, now serves as the exclusive distributor of Albright International DC contactors across the Americas, India, and China. The Albright brand itself has a long track record in material handling and light electric vehicle markets, giving Curtis a strong position in forklifts, aerial platforms, golf carts, and similar low-speed electric equipment.

Curtis/Albright’s DC contactor line is engineered for durability across a wide range of power systems and electric vehicle applications, with models rated up to 400 A, and higher-rated variants extending toward 1,000 VDC for heavier-duty platforms. The combination of Curtis’s controller expertise and Albright’s contactor hardware makes the pairing a practical, tested choice for mobile equipment manufacturers sourcing an integrated electric drivetrain system rather than standalone components.

8. Zhejiang Dongya Electronic

• Founded: 1984
• Headquarters: Yueqing, Zhejiang, China
• Core Products: High and low voltage DC contactors, relays, shunts, hydraulic circuit breakers
• Official Website: dc-contactors.com

Founded in 1984, Zhejiang Dongya Electronic is one of the most established DC switching manufacturers in Yueqing — a city that has become a concentrated industrial cluster for China’s electrical component industry. The company specializes in designing, manufacturing, and selling high and low-voltage DC contactors, relays, shunts, hydraulic circuit breakers, and BDUs, offering dozens of product series across more than 300 individual models with an annual production capacity of roughly 15 million pieces.

Dongya’s products are certified to IATF16949, ISO9001, ISO14001, and ISO45001, with UL, CE, TÜV, and CCC product certifications, and are used across communication power supplies, new energy vehicles, charging infrastructure, frequency converters, and construction machinery. This breadth of certification and application coverage reflects the company’s four decades of accumulated manufacturing experience, making it a common OEM sourcing option for buyers prioritizing scale and model variety.

9. Zhejiang Geya Electrical

• Founded: 2007
• Headquarters: Yueqing, Zhejiang, China
• Core Products: MCB, MCCB, RCCB, contactors, relays, distribution equipment
• Official Website: geya.cc

Zhejiang Geya Electrical was founded in February 2007 and has grown into one of China’s active exporters of low voltage electrical and automation control equipment. The company today operates four regional offices covering more than six continents and supplies more than 40 international distribution partners, reflecting a deliberate export-market strategy since its early years.

Geya’s product range spans MCBs, MCCBs, RCCBs, contactors, inverters, frequency drivers, timer and control relays, digital meters, and distribution boxes, with certifications including ISO, CCC, CE, CB, SAA, SEMKO, and TÜV. Rather than specializing narrowly in DC switching, Geya positions its contactors as one part of a broader low voltage protection and control catalog — an approach that appeals to distributors and panel builders looking for a single supplier across multiple product categories.

10. Durakool (Solid State Group)

• Founded: 1935
• Headquarters: Copthorne, West Sussex, United Kingdom
• Core Products: Automotive and industrial relays, HVDC contactors, precharge/discharge resistors
• Official Website: durakool.com

Durakool was established in 1935 to manufacture switching devices for power generation in industrial and power automation systems, and operates today as the flagship switching brand of UK-listed Solid State Group PLC. Nearly ninety years of switching-component history give the brand a long design archive to draw on, which it now applies to automotive and industrial DC contactors for the EV transition.

Durakool’s low voltage automotive DC contactors are rated up to 120 VDC and 2,000 A, purpose-built for demanding automotive environments, with a particular focus on compact package sizes for space-constrained vehicle platforms. The company has also introduced magnetic arc-blowout technology across several relay and contactor families, a design choice aimed at extending contact life in high-cycle industrial and forklift applications.

Choosing the Right Low Voltage DC Contactor Supplier

Every manufacturer on this list brings a different combination of voltage range, certification coverage, and application focus. When evaluating suppliers, it’s worth checking rated voltage and current against your actual duty cycle, confirming certifications relevant to your target market, and asking whether the supplier can also provide compatible fuses or circuit protection.

As a manufacturer producing both DC contactors and the semiconductor fuses, DC breakers, and power modules typically paired with them, HIITIO offers buyers a way to source coordinated protection components from one supplier rather than reconciling specifications across multiple vendors. For EV and ESS integrators evaluating a new switching supplier, HIITIO’s EV contactor solutions page outlines application-specific configurations, and the team can provide test data, samples, and customization support directly — reach out via hiitio.com to start a technical conversation.