DCNSEV30 Series - DCNSEV30 Series High Voltage DC Contactor Relays

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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

High current and high voltage DC contactor relays for electric vehicle applications such as battery power supply, charging pill, motor control, circuit insulation, circuit protection, and also safety devices for industrial machinery. Are available with polarized and non-polarized contacts to best suit electrical systems’ polarity.


  • Battery Electric Vehicles
  • Hybrid Electric Vehicles
  • Material Handling
  • Electric Maintenance and Transport Vehicles
  • Industrial Applications

Features and Benefits

  • High current (30A) and high voltage (900V) contactor for EV applications
  • Compact structure, helping reduce noise when turned on
  • Sealed IP67, gas filled relay which prevents arcing
  • No mounting orientation restrictions

Access specifications, certifications, check availability and order parts below

Catalog #Current Rating (Continuous) in AmpsVoltage Rating MaxCircuitryIngress ProtectionOutput TerminalsContact MaterialHardwareConnectorHousingCompare
DCNSEV30-B30900SPSTIP67M53.4 - 4.5 Nm (30 - 40 in-lb)M4 with Compression LimitersWire Leads for Control CircuitNylon UL 94-V0
DCNSEV30-C30900SPSTIP67M53.4 - 4.5 Nm (30 - 40 in-lb)M4 with Compression LimitersWire Leads for Control CircuitNylon UL 94-V0
To request product environmental information, please complete the Product Environmental Information Request Form.

pdf icon Battery Disconnect and Protection

3D Model - DC Contactor Relays

pdf icon Automotive Electronics Applications Guide

This guide provides a summary of key circuit protection consideration factors, descriptions of the technologies Littelfuse offers, and product selection tables. It is designed to help you quickly find a protection solution appropriate to your application.

pdficon DCNSEV30 Datasheet

DCNSEV30 Datasheet

pdficon DCNSEV30 Instruction Sheet

pdficon Relays Brochure