High Voltage DC Contactors

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Product family overview

High Voltage DC Contactors application and selection guide

High voltage DC contactors are designed for DC load control in battery, EV, charging, energy storage and industrial power systems where carry, make and break ratings must be matched to voltage, load type, polarity and pre-charge strategy.

Use this family for DC power-path control where arc suppression, contact life, coil control and thermal design must be confirmed against the real load profile.

EV battery disconnect and pre-charge systemsCharging piles and DC fast chargingEnergy storage systemsIndustrial DC power and safety isolation

High Voltage DC Contactor principle illustration

1Battery / DC bus

2Coil drive

3Main contact chamber

4Load / inverter / charger

Main parameters

Key selection parameters

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback
Mounting: Panel, chassis or busbar integration depending on model

Engineering selection notes

Before choosing a model

These notes keep product pages useful for engineers while avoiding overclaims. Final ratings remain model- and application-specific.

Carry current is not make/break currentContinuous current, making current and breaking current depend on DC voltage, time constant, polarity, pre-charge strategy and expected electrical life. Use the datasheet limits and RFQ review for the real load profile.

Pre-charge and polarity matterDC-link capacitors usually need a pre-charge path. Many DC contactors are polarity-sensitive for interruption, so bidirectional or reverse-current systems require explicit confirmation.

Follow coil suppression instructionsDo not add external flyback diodes or suppression to internally economized/suppressed contactor coils unless the contactor datasheet approves it; delayed release can reduce interrupt capability.

Series comparison

High voltage DC contactor selection comparison

Start with system voltage, continuous current, load type and coil/control requirements. Final make/break ratings must be confirmed by model datasheet and RFQ.

Selection item	Typical options	Why it matters	RFQ confirmation
DC platform voltage	Battery / charger / ESS high-voltage bus	Determines insulation, arc suppression and safety margin	Working voltage, maximum voltage and transient profile
Current class	Model-specific continuous and switching current	Controls thermal design and contact life	Continuous current, breaking current and duty cycle
Coil / control	12V / 24V / custom coil families	Must match BMS, charger or PLC control circuit	Coil voltage, economizer need and auxiliary contact
Mounting	Panel, chassis, busbar or cable integration	Affects heat, vibration and serviceability	Drawing, terminal type and installation orientation

Model display

Representative models in this family

Each model links to its own detail page and datasheet/RFQ path. Use the All Models index for the complete list.

ESM-150ESM-150 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

ESM-20ESM-20 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

ESM-250ESM-250 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

ESM-350ESM-350 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

ESM-400ESM-400 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

ESM-600ESM-600 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

ESM-800ESM-800 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

EVG-150EVG-150 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

EVG-200EVG-200 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

EVG-250EVG-250 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

EVG-300EVG-300 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

EVG-350EVG-350 High Voltage DC Contactor

Application voltage: High-voltage DC platform; model-specific rating by datasheet
Current range: Model-specific continuous and making/breaking current
Coil voltage: 12V / 24V / custom options depending on series
Auxiliary contact: Available on selected models for state feedback

Details · Datasheet

View complete model index

FAQ

High Voltage DC Contactors selection FAQ

Answers are shown on-page to match the structured FAQ data and help engineers prepare datasheet review or RFQ requests.

How do I choose a High Voltage DC Contactors model?

Start from the application requirement, then compare Application voltage, Current range, Coil voltage, Auxiliary contact, Mounting. Open the model detail page and PDF datasheet before confirming the final ordering code.

Where can I find individual datasheets for this product family?

Each representative model card links to its own detail page and PDF datasheet. For production projects, submit an RFQ so voltage, current, mounting and compliance requirements can be confirmed.

What information should be included in an RFQ?

Include working voltage, current, load type, contact or output form, coil or control voltage, mounting style, environment, validation quantity and expected production volume.

Recommended next steps

Continue product selection

Use these internal paths to move from overview to model comparison, datasheet review and RFQ submission.

Download category catalogSave the family PDF for engineering review Request engineering quoteSend application data for model selection and pricing View complete model indexSearch all public relay, contactor and sensor models Read technical libraryReview application notes and selection guidance Complete catalog PDFDownload the full public product catalog

Engineering selection guide

High voltage DC contactor selection details

Select DC contactors by continuous current, DC bus voltage, making/breaking duty, coil/control voltage, auxiliary contact, terminal style, sealing type and thermal environment.

Download selection catalog PDF Download family datasheet PDF Request engineering RFQ

High voltage DC contactor selection details product reference image — Representative product image; exact package and marking vary by model.

High voltage DC contactor selection details dimension envelope illustration — Dimension envelope illustration; use the final drawing before PCB/tooling release.

Selection checklist

Continuous current and short-time withstand
DC voltage, load type and breaking duty
Epoxy sealed EVI vs ceramic sealed EVM
Coil voltage, economizer and auxiliary contact
Busbar terminal spacing and mounting hole pattern
Application: EV, ESS, PV inverter, DC charger

Representative models

EVI-30A PDF EVI-100A PDF EVI-250A PDF EVI-300A PDF EVM-40A PDF EVM-200A PDF EVM-400A PDF

Use these models as starting points when comparing voltage, current, contact form, package and application duty.

Model code example: EVM-200A-12/24V

EVM: Ceramic sealed high-voltage DC contactor family
200A: Nominal current class
12/24V: Coil/control voltage option
Aux/terminal: Auxiliary contact, polarity and busbar terminals by drawing

English engineering resources

High Voltage DC Contactors English catalog

Review the standardized English product-family catalog, datasheets and RFQ path for this product category.

Download Category Catalog Complete Product Catalog Request Engineering Quote

Original source PDFs are preferred when available. Generated English PDFs are used only when no original source PDF is found; final ratings, drawings and application suitability are confirmed by RFQ.

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