English
contactor
Industrial Vehicles Solution
ALQ Technology has developed a series of highly reliable DC contactors tailored to the
application conditions and industry pain points of industrial vehicles. These DC contactors
can fully meet the reliable operation requirements of electric forklifts, electric pallet trucks, 
electric aerial work platforms, intelligent logistics systems, Automated Guided Vehicles
(AGV), cold chain logistics equipment, industrial robots, power tools, and electric golf carts.
contactor
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The left diagram is a typical control circuit diagram for 
electric forklifts. It is a simplified schematic that only
illustrates part of the control logic of DC contactors, and
is for reference only.
K1 and K2 are DC contactors for battery pack charging.
K5 is the pre-charging DC contactor.
K3 and K4 are DC contactors for battery pack 
discharging.
K6 is the DC contactor for battery pack 
heating.
K7 and K8 are DC contactors for the motor control 
assembly.
Guidelines for the Selection 
of DC Contactors for 
Industrial Vehicles
Characteristics of the Following DC Contactors
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The power contacts feature excellent resistance to capacitive load surges,              effectively preventing welding of the power contacts.
Low temperature rise, long service life, and high reliability.
Suitable for operation in harsh environments such as low temperature, 
high humidity, dusty conditions, and high altitude.
Image Part Number Rated Current (A) Max. Switching Voltage (V DC) Coil Voltage Rating Options (V DC) Power Contact Arrangement Auxiliary Contact Arrangement Options Coil Characteristic Load Termination Mounting Type Options Certificates
EVQ1D-10 1000V dc / 10A DC Contactor EVQ1D-10 10 1000 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect Internal thread (M4) Bottom CE, TÜV
EVQ1D-30 1000V dc / 30A DC Contactor EVQ1D-30 30 1000 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect Internal thread (M4) Bottom CE, TÜV
EVQ1D-50 1000V dc / 50A DC Contactor EVQ1D-50 50 1000 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect Internal thread (M4) Bottom CE, TÜV
EVC2A-80 500V DC / 80A DC Contactor EVC2A-80 80 500 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect External thread (M6) Bottom / Side
EVC2A-100 500V DC / 100A DC Contactor EVC2A-100 100 500 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect External thread (M6) Bottom / Side
EVC2A-125 500V DC / 125A DC Contactor EVC2A-125 125 500 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect External thread (M6) Bottom / Side
EVD2A-100 200V DC / 100A DC Contactor EVD2A-100 100 450 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect External thread (M6) Bottom / Side CCC, UL, CE, TÜV
EVD2A-150 200V DC / 150A DC Contactor EVD2A-150 150 450 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect External thread (M6) Bottom / Side CCC, UL, CE, TÜV
EVD2A-200 200V DC / 200A DC Contactor EVD2A-200 200 450 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect External thread (M6) Bottom / Side CCC, UL, CE, TÜV
EVD2A-250 200V DC / 250A DC Contactor EVD2A-250 250 450 12 / 24 / 48 SPST-NO-DM None Single coil, Quick-connect External thread (M6) Bottom / Side CCC, UL, CE, TÜV
EVC5A-150 500V DC / 150A DC Contactor EVC5A-150 150 500 12 / 24 / 48 SPST-NO-DM SPST-NO / SPST-NC / None Single coil, Quick-connect External thread (M8) Bottom / Side
EVC5A-200 500V DC / 200A DC Contactor EVC5A-200 200 500 12 / 24 / 48 SPST-NO-DM SPST-NO / SPST-NC / None Single coil, Quick-connect External thread (M8) Bottom / Side
EVC5A-250 500V DC / 250A DC Contactor EVC5A-250 250 500 12 / 24 / 48 SPST-NO-DM SPST-NO / SPST-NC / None Single coil, Quick-connect External thread (M8) Bottom / Side
EVQ5KH-250 500V dc / 250A DC Contactor EVQ5KH-250 250 500 12 / 24 / 48 SPST-NO-DM SPST-NO / SPST-NC / None Single coil, TVS, Quick-connect External thread (M8) Bottom CCC, CE, TÜV
EVQ5KH-300 500V dc / 300A DC Contactor EVQ5KH-300 300 500 12 / 24 / 48 SPST-NO-DM SPST-NO / SPST-NC / None Single coil, TVS, Quick-connect External thread (M8) Bottom CCC, CE, TÜV
EVQ5KH-400 500V dc / 400A DC Contactor EVQ5KH-400 400 500 12 / 24 / 48 SPST-NO-DM SPST-NO / SPST-NC / None Single coil, TVS, Quick-connect External thread (M8) Bottom CCC, CE, TÜV
EVC7A-400 500V DC / 400A DC Contactor EVC7A-400 400 500 12 / 24 / 48 SPST-NO-DM SPST-NO / SPST-NC / None Single coil, Quick-connect External thread (M10) Bottom / Side
EVC7A-500 500V DC / 500A DC Contactor EVC7A-500 500 500 12 / 24 / 48 SPST-NO-DM SPST-NO / SPST-NC / None Single coil, Quick-connect External thread (M10) Bottom / Side
EVC7A-600 500V DC / 600A DC Contactor EVC7A-600 600 500 12 / 24 / 48 SPST-NO-DM SPST-NO / SPST-NC / None Single coil, Quick-connect External thread (M10) Bottom / Side
ALQ Technology was founded in
2013 and is committed to providing safer and more reliable DC switchgear for the global market. We have a strong R&D team that closely focuses on customers' needs and pain points, delivering
targeted DC contactors / DC relays to them. Endowed with rapid 
response capabilities, we 
continuously create greater value for our customers.

QUICK LINKS

CONTACT ALQ
WhatsAPP:   +86 139 1400 8299
Email:   sales@sz-alq.com
Phone:   +86 139 1400 8299
Fax:   +86-512-6618 8458
          +86-512-6618 8468
Address:   No. 599 Tai Shan Road, High-tech Zone, Suzhou City, Jiangsu Province, China, 
Factory Building No. 4, Floor 4 North
ALQ Technology was founded in
2013 and is committed to providing 
safer and more reliable DC 
switchgear for the global market. 
We have a strong R&D team that 
closely focuses on customers' 
needs and pain points, delivering
targeted DC contactors / DC relays
to them. Endowed with rapid 
response capabilities, we 
continuously create greater value 
for our customers.

QUICK LINKS

CONTACT ALQ
WhatsAPP:   +86 139 1400 8299
Email:    sales@sz-alq.com
Phone:   +86 139 1400 8299
Fax:   +86-512-6618 8458
          +86-512-6618 8468
Address:   No. 599 Tai Shan Road, 
High-tech Zone, Suzhou City, 
Jiangsu Province, China, Factory 
Building No. 4, Floor 4 North
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